2 @c This is part of the Frr Manual.
3 @c @value{COPYRIGHT_STR}
4 @c See file frr.texi for copying conditions.
7 @chapter VNC and VNC-GW
8 This chapter describes how to use
9 Virtual Network Control (@acronym{VNC}) services,
10 including Network Virtualization Authority (@acronym{NVA}) and
11 VNC Gateway (@acronym{VNC-GW}) functions.
12 Background information on NVAs,
13 Network Virtualization Edges (@acronym{NVE}s), underlay networks (@acronym{UN}s),
14 and virtual networks (@acronym{VN}s) is available from the
15 @url{https://datatracker.ietf.org/wg/nvo3,IETF Network Virtualization Overlays (@acronym{NVO3}) Working Group}.
16 VNC Gateways (@acronym{VNC-GW}s) support the import/export of routing
17 information between VNC and customer edge routers (@acronym{CE}s)
18 operating within a VN. Both IP/Layer 3 (L3) VNs, and IP with
19 Ethernet/Layer 2 (L2) VNs are supported.
21 BGP, with IP VPNs and Tunnel Encapsulation, is used to distribute VN
22 information between NVAs. BGP based IP VPN support is defined in
23 @cite{RFC4364, BGP/MPLS IP Virtual Private Networks (VPNs)}, and
24 @cite{RFC4659, BGP-MPLS IP Virtual Private Network (VPN) Extension for
25 IPv6 VPN }. Both the Encapsulation Subsequent Address Family Identifier
26 (SAFI) and the Tunnel Encapsulation Attribute, @cite{RFC5512, The BGP
27 Encapsulation Subsequent Address Family Identifier (SAFI) and the BGP
28 Tunnel Encapsulation Attribute}, are supported.
30 The protocol that is used to communicate routing and Ethernet / Layer 2
31 (L2) forwarding information between NVAs and NVEs is referred to as the
32 Remote Forwarder Protocol (RFP). @code{OpenFlow} is an example
33 RFP. Specific RFP implementations may choose to implement either a
34 @code{hard-state} or @code{soft-state} prefix and address registration
35 model. To support a @code{soft-state} refresh model, a @var{lifetime}
36 in seconds is associated with all registrations and responses.
38 The chapter also provides sample configurations for basic example scenarios.
41 * Configuring VNC Services::
42 * Manual Address Control::
43 * Other VNC-Related Commands::
44 * Example VNC and VNC-GW Configurations::
48 @node Configuring VNC Services
49 @section Configuring VNC
51 Virtual Network Control (@acronym{VNC}) service configuration commands
52 appear in the @code{router bgp} section of the BGPD configuration file
53 (@pxref{BGP Configuration Examples}). The commands are broken down into
57 * General VNC Configuration::
58 * RFP Related Configuration::
59 * VNC Defaults Configuration::
60 * VNC NVE Group Configuration::
61 * VNC L2 Group Configuration::
62 * Configuring Redistribution of Routes from Other Routing Protocols::
63 * Configuring Export of Routes to Other Routing Protocols::
66 @code{General VNC} configuration applies to general VNC operation and is
67 primarily used to control the method used to advertise tunnel
70 @code{Remote Forwarder Protocol (RFP)} configuration relates to the
71 protocol used between NVAs and NVEs.
73 @code{VNC Defaults} provides default parameters for registered NVEs.
75 @code{VNC NVE Group} provides for configuration of a specific set of
76 registered NVEs and overrides default parameters.
78 @code{Redistribution} and @code{Export} control VNC-GW operation, i.e.,
79 the import/export of routing
80 information between VNC and customer edge routers (@acronym{CE}s)
81 operating within a VN.
83 @node General VNC Configuration
84 @subsection General VNC Configuration
86 @deffn {VNC} {vnc advertise-un-method encap-safi|encap-attr} {}
87 Advertise NVE underlay-network IP addresses using the encapsulation SAFI
88 (@code{encap-safi}) or the UN address sub-TLV of the Tunnel Encapsulation attribute
89 (@code{encap-attr}). When @code{encap-safi} is used, neighbors under
90 @code{address-family encap} and/or @code{address-family encapv6} must be
91 configured. The default is @code{encap-attr}.
94 @node RFP Related Configuration
95 @subsection RFP Related Configuration
97 The protocol that is used to communicate routing and Ethernet / L2
98 forwarding information between NVAs and NVEs is referred to as the
99 Remote Forwarder Protocol (RFP). Currently, only a simple example RFP
100 is included in Frr. Developers may use this example as a starting
101 point to integrate Frr with an RFP of their choosing, e.g.,
102 @code{OpenFlow}. The example code includes the following sample
105 @deffn {RFP} {rfp example-config-value @var{VALUE}}
106 This is a simple example configuration parameter included as part of the
107 RFP example code. @code{VALUE} must be in the range of 0 to 4294967295.
110 @node VNC Defaults Configuration
111 @subsection VNC Defaults Configuration
113 The VNC Defaults section allows the user to specify default values for
114 configuration parameters for all registered NVEs.
115 Default values are overridden by @ref{VNC NVE Group Configuration}.
117 @deffn {VNC} {vnc defaults} {}
118 Enter VNC configuration mode for specifying VNC default behaviors. Use
119 @code{exit-vnc} to leave VNC configuration mode. @code{vnc
120 defaults} is optional.
124 ... various VNC defaults
129 These are the statements that can appear between @code{vnc defaults}
132 @deffn {VNC} {rt import @var{rt-list}} {}
133 @deffnx {VNC} {rt export @var{rt-list}} {}
134 @deffnx {VNC} {rt both @var{rt-list}} {}
136 Specify default route target import and export lists. @var{rt-list} is a
137 space-separated list of route targets, each element of which is
138 in one of the following forms:
140 @item @var{IPv4-address}:@var{two-byte-integer}
141 @item @var{four-byte-autonomous-system-number}:@var{two-byte-integer}
142 @item @var{two-byte-autonomous-system-number}:@var{four-byte-integer}
145 If no default import RT list is specified, then the default import RT
147 If no default export RT list is specified, then the default export RT
150 A complete definition of these parameters is
151 given below (@pxref{VNC NVE Group Configuration}).
155 @deffn {VNC} {rd @var{route-distinguisher}}
157 Specify the default route distinguisher (RD) for routes advertised via BGP
158 VPNs. The route distinguisher must be in one of four forms:
160 @item @var{IPv4-address}:@var{two-byte-integer}
161 @item @var{four-byte-autonomous-system-number}:@var{two-byte-integer}
162 @item @var{two-byte-autonomous-system-number}:@var{four-byte-integer}
163 @item auto:vn:@var{two-byte-integer}
166 If RD is specified in the defaults section, the default RD
167 value is @var{two-byte-autonomous-system-number=0}:@var{four-byte-integer=0}.
169 A complete definition of this parameter is
170 given below (@pxref{VNC NVE Group Configuration}).
173 @deffn {VNC} {l2rd @var{nve-id-value}}
174 Set the value used to distinguish NVEs connected to the same logical
175 Ethernet segment (i.e., L2VPN).
177 A complete definition of this parameter is
178 given below (@pxref{VNC NVE Group Configuration}).
181 @deffn {VNC} {response-lifetime @var{lifetime}|infinite} {}
182 Specify the default lifetime to be included in RFP
183 response messages sent to NVEs.
185 A complete definition of this parameter is
186 given below (@pxref{VNC NVE Group Configuration}).
190 @deffn {VNC} {export bgp|zebra route-map MAP-NAME}
191 Specify that the named route-map should be applied to routes
192 being exported to bgp or zebra.
195 @deffn {VNC} {export bgp|zebra no route-map}
196 Specify that no route-map should be applied to routes
197 being exported to bgp or zebra.
200 @deffn {VNC} {export bgp|zebra ipv4|ipv6 prefix-list LIST-NAME}
201 Specify that the named prefix-list filter should be applied to
202 routes being exported to bgp or zebra.
203 Prefix-lists for ipv4 and ipv6 are independent of each other.
206 @deffn {VNC} {export bgp|zebra no ipv4|ipv6 prefix-list}
207 Specify that no prefix-list filter should be applied to
208 routes being exported to bgp or zebra.
211 @deffn {VNC} {exit-vnc} {}
212 Exit VNC configuration mode.
215 @c The following example @code{vnc defaults} defines a route target import-export
216 @c list for the route targets 1000:1 and 1000:2; a default route
217 @c distinguisher, 4444:10; and a default response lifetime of 500
222 @c rt both 1000:1 1000:2
224 @c response-lifetime 500
228 @node VNC NVE Group Configuration
229 @subsection VNC NVE Group Configuration
231 A NVE Group corresponds to a specific set of NVEs. A Client NVE is
232 assigned to an NVE Group based on whether there is a match for either
233 its virtual or underlay network address against the VN and/or UN address
234 prefixes specified in the NVE Group definition. When an NVE Group
235 definition specifies both VN and UN address prefixes, then an NVE must
236 match both prefixes in order to be assigned to the NVE Group. In the
237 event that multiple NVE Groups match based on VN and/or UN addresses,
238 the NVE is assigned to the first NVE Group listed in the configuration.
239 If an NVE is not assigned to an NVE Group, its messages will be ignored.
241 Configuration values specified for an NVE group apply to all
242 member NVEs and override configuration values specified in the VNC
245 @strong{At least one @code{nve-group} is mandatory for useful VNC
248 @deffn {VNC} {vnc nve-group @var{name}} {}
249 Enter VNC configuration mode for defining the NVE group @var{name}.
250 Use @code{exit} or @code{exit-vnc} to exit group configuration mode.
254 ... configuration commands
259 @deffn {VNC} {no vnc nve-group @var{name}} {}
260 Delete the NVE group named @var{name}.
263 The following statements are valid in an NVE group definition:
265 @deffn {VNC} {l2rd @var{nve-id-value}}
266 Set the value used to distinguish NVEs connected to the same physical
267 Ethernet segment (i.e., at the same location)@footnote{The nve-id is
269 distinguisher. It is the second octet of the eight-octet route
270 distinguisher generated for Ethernet / L2 advertisements.
271 The first octet is a constant 0xFF, and the third through eighth
272 octets are set to the L2 ethernet address being advertised.}
274 The nve-id subfield may be specified as either a literal value
275 in the range 1-255, or it may be specified as @code{auto:vn}, which
276 means to use the least-significant octet of the originating
280 @deffn {VNC} {prefix vn|un A.B.C.D/M|X:X::X:X/M} {}
282 Specify the matching prefix for this NVE group by either virtual-network address
283 (@code{vn}) or underlay-network address (@code{un}). Either or both virtual-network
284 and underlay-network prefixes may be specified. Subsequent virtual-network or
285 underlay-network values within a @code{vnc nve-group} @code{exit-vnc}
286 block override their respective previous values.
288 These prefixes are used only for determining assignments of NVEs
292 @deffn {VNC} {rd @var{route-distinguisher}}
293 Specify the route distinguisher for routes advertised via BGP
294 VPNs. The route distinguisher must be in one of these forms:
296 @item @var{IPv4-address}:@var{two-byte-integer}
297 @item @var{four-byte-autonomous-system-number}:@var{two-byte-integer}
298 @item @var{two-byte-autonomous-system-number}:@var{four-byte-integer}
299 @item auto:vn:@var{two-byte-integer}
302 Routes originated by NVEs in the NVE group will use
303 the group's specified @var{route-distinguisher} when they are
305 If the @code{auto} form is specified, it means that a matching NVE has
307 @var{rd_type=IP=1}:@var{IPv4-address=VN-address}:@var{two-byte-integer},
308 for IPv4 VN addresses and
309 @var{rd_type=IP=1}:@var{IPv4-address=Last-four-bytes-of-VN-address}:@var{two-byte-integer},
310 for IPv6 VN addresses.
312 If the NVE group definition does not specify a @var{route-distinguisher},
313 then the default @var{route-distinguisher} is used.
314 If neither a group nor a default @var{route-distinguisher} is
315 configured, then the advertised RD is set to
316 @var{two-byte-autonomous-system-number=0}:@var{four-byte-integer=0}.
319 @deffn {VNC} {response-lifetime @var{lifetime}|infinite} {}
320 Specify the response lifetime, in seconds, to be included in RFP
321 response messages sent to NVEs. If the value
322 ``infinite'' is given, an infinite lifetime will be used.
324 Note that this parameter is not the same as the lifetime supplied by
325 NVEs in RFP registration messages. This parameter does not affect
326 the lifetime value attached to routes sent by this server via BGP.
328 If the NVE group definition does not specify a @var{response-lifetime},
329 the default @var{response-lifetime} will be used.
330 If neither a group nor a default @var{response-lifetime} is configured,
331 the value 3600 will be used. The maximum response lifetime is 2147483647.
334 @deffn {VNC} {rt export @var{rt-list}} {}
335 @deffnx {VNC} {rt import @var{rt-list}} {}
336 @deffnx {VNC} {rt both @var{rt-list}} {}
337 Specify route target import and export lists. @var{rt-list} is a
338 space-separated list of route targets, each element of which is
339 in one of the following forms:
341 @item @var{IPv4-address}:@var{two-byte-integer}
342 @item @var{four-byte-autonomous-system-number}:@var{two-byte-integer}
343 @item @var{two-byte-autonomous-system-number}:@var{four-byte-integer}
346 The first form, @code{rt export}, specifies an @var{export rt-list}.
347 The @var{export rt-list} will be attached to routes originated by
348 NVEs in the NVE group when they are advertised via BGP.
349 If the NVE group definition does not specify an @var{export rt-list},
350 then the default @var{export rt-list} is used.
351 If neither a group nor a default @var{export rt-list} is configured,
352 then no RT list will be sent; in turn, these routes will probably
356 The second form, @code{rt import} specifies an @var{import rt-list},
357 which is a filter for incoming routes.
358 In order to be made available to NVEs in the group,
359 incoming BGP VPN and @w{ENCAP} @w{SAFI} (when @code{vnc
360 advertise-un-method encap-safi} is set) routes must have
361 RT lists that have at least one route target in common with the
362 group's @var{import rt-list}.
364 If the NVE group definition does not specify an import filter,
365 then the default @var{import rt-list} is used.
366 If neither a group nor a default @var{import rt-list} is configured,
367 there can be no RT intersections when receiving BGP routes and
368 therefore no incoming BGP routes will be processed for the group.
370 The third, @code{rt both}, is a shorthand way of specifying both
371 lists simultaneously, and is equivalent to @code{rt export @var{rt-list}}
372 followed by @code{rt import @var{rt-list}}.
375 @deffn {VNC} {export bgp|zebra route-map MAP-NAME}
376 Specify that the named route-map should be applied to routes
377 being exported to bgp or zebra.
378 This paramter is used in conjunction with
379 @ref{Configuring Export of Routes to Other Routing Protocols}.
380 This item is optional.
383 @deffn {VNC} {export bgp|zebra no route-map}
384 Specify that no route-map should be applied to routes
385 being exported to bgp or zebra.
386 This paramter is used in conjunction with
387 @ref{Configuring Export of Routes to Other Routing Protocols}.
388 This item is optional.
391 @deffn {VNC} {export bgp|zebra ipv4|ipv6 prefix-list LIST-NAME}
392 Specify that the named prefix-list filter should be applied to
393 routes being exported to bgp or zebra.
394 Prefix-lists for ipv4 and ipv6 are independent of each other.
395 This paramter is used in conjunction with
396 @ref{Configuring Export of Routes to Other Routing Protocols}.
397 This item is optional.
400 @deffn {VNC} {export bgp|zebra no ipv4|ipv6 prefix-list}
401 Specify that no prefix-list filter should be applied to
402 routes being exported to bgp or zebra.
403 This paramter is used in conjunction with
404 @ref{Configuring Export of Routes to Other Routing Protocols}.
405 This item is optional.
408 @c The following example shows two @code{vnc nve-group} definitions. The first one,
409 @c ``group1'', applies to the IPV4 virtual-network route prefix 172.16/16. It
410 @c sets the response lifetime to 200 seconds. It defines a route target
411 @c import-export filter for the route targets 1000:1 and 1000:2
413 @c The second @code{vnc nve-group} definition, ``group2'', applies to the IPV6
414 @c underlay-network route prefix 10.0.2/24. It defines the same response
415 @c lifetime and import-export filter as ``group1''.
418 @c vnc nve-group group1
419 @c prefix vn 172.16/16
420 @c response-lifetime 200
421 @c rt both 1000:1 1000:2
424 @c vnc nve-group group2
425 @c prefix un 10.0.2/24
426 @c response-lifetime 200
427 @c rt both 1000:1 1000:2
431 @node VNC L2 Group Configuration
432 @subsection VNC L2 Group Configuration
434 The route targets advertised with prefixes and addresses registered by
435 an NVE are determined based on the NVE's associated VNC NVE Group
436 Configuration, @pxref{VNC NVE Group Configuration}. Layer 2 (L2) Groups
437 are used to override the route targets for an NVE's Ethernet
438 registrations based on the Logical Network Identifier and label value.
439 A Logical Network Identifier is used to uniquely identify a logical
440 Ethernet segment and is conceptually similar to the Ethernet Segment
441 Identifier defined in @cite{RFC7432, BGP MPLS-Based Ethernet VPN}. Both
442 the Logical Network Identifier and Label are passed to VNC via RFP
443 prefix and address registration.
445 Note that a corresponding NVE group configuration must be present, and
446 that other NVE associated configuration information, notably RD, is
447 not impacted by L2 Group Configuration.
449 @deffn {VNC} {vnc l2-group @var{name}} {}
450 Enter VNC configuration mode for defining the L2 group @var{name}.
451 Use @code{exit} or @code{exit-vnc} to exit group configuration mode.
455 ... configuration commands
460 @deffn {VNC} {no vnc l2-group @var{name}} {}
461 Delete the L2 group named @var{name}.
464 The following statements are valid in a L2 group definition:
466 @deffn {VNC} {logical-network-id @var{VALUE}}
467 Define the Logical Network Identifier with a value in the range of
468 0-4294967295 that identifies the logical Ethernet segment.
471 @deffn {VNC} {labels @var{label-list}}
472 @deffnx {VNC} {no labels @var{label-list}}
473 Add or remove labels associated with the group. @var{label-list} is a
474 space separated list of label values in the range of 0-1048575.
477 @deffn {VNC} {rt import @var{rt-target}} {}
478 @deffnx {VNC} {rt export @var{rt-target}} {}
479 @deffnx {VNC} {rt both @var{rt-target}} {}
480 Specify the route target import and export value associated with the
481 group. A complete definition of these parameters is given above,
482 @pxref{VNC NVE Group Configuration}.
486 @node Configuring Redistribution of Routes from Other Routing Protocols
487 @subsection Configuring Redistribution of Routes from Other Routing Protocols
489 Routes from other protocols (including BGP) can be provided to VNC (both
490 for RFP and for redistribution via BGP)
491 from three sources: the zebra kernel routing process;
492 directly from the main (default) unicast BGP RIB; or directly
493 from a designated BGP unicast exterior routing RIB instance.
495 The protocol named in the @code{vnc redistribute} command indicates
497 @code{bgp-direct} routes come directly from the main (default)
498 unicast BGP RIB and are available for RFP and are redistributed via BGP;
499 @code{bgp-direct-to-nve-groups} routes come directly from a designated
500 BGP unicast routing RIB and are made available only to RFP;
501 and routes from other protocols come from the zebra kernel
503 Note that the zebra process does not need to be active if
504 only @code{bgp-direct} or @code{bgp-direct-to-nve-groups} routes are used.
506 @subsubsection @code{zebra} routes
508 Routes originating from protocols other than BGP must be obtained
509 via the zebra routing process.
510 Redistribution of these routes into VNC does not support policy mechanisms
511 such as prefix-lists or route-maps.
513 @subsubsection @code{bgp-direct} routes
515 @code{bgp-direct} redistribution supports policy via
516 prefix lists and route-maps. This policy is applied to incoming
517 original unicast routes before the redistribution translations
518 (described below) are performed.
520 Redistribution of @code{bgp-direct} routes is performed in one of three
521 possible modes: @code{plain}, @code{nve-group}, or @code{resolve-nve}.
522 The default mode is @code{plain}.
523 These modes indicate the kind of translations applied to routes before
524 they are added to the VNC RIB.
526 In @code{plain} mode, the route's next hop is unchanged and the RD is set
527 based on the next hop.
528 For @code{bgp-direct} redistribution, the following translations are performed:
531 The VN address is set to the original unicast route's next hop address.
533 The UN address is NOT set. (VN->UN mapping will occur via
534 ENCAP route or attribute, based on @code{vnc advertise-un-method}
535 setting, generated by the RFP registration of the actual NVE)
537 The RD is set to as if auto:vn:0 were specified (i.e.,
538 @var{rd_type=IP=1}:@var{IPv4-address=VN-address}:@var{two-byte-integer=0})
540 The RT list is included in the extended community list copied from the
541 original unicast route (i.e., it must be set in the original unicast route).
546 In @code{nve-group} mode, routes are registered with VNC as
547 if they came from an NVE in the nve-group designated in the
548 @code{vnc redistribute nve-group} command. The following
549 translations are performed:
553 The next hop/VN address is set to the VN prefix configured for the
554 redistribute nve-group.
556 The UN address is set to the UN prefix configured for the
557 redistribute nve-group.
559 The RD is set to the RD configured for the redistribute nve-group.
561 The RT list is set to the RT list configured for the redistribute nve-group.
562 If @code{bgp-direct} routes are being redistributed,
563 any extended communities present in the original unicast route
564 will also be included.
568 In @code{resolve-nve} mode, the next hop of the original BGP route is
569 typically the address of an NVE connected router (CE) connected by one or
571 Each of the connected NVEs will register, via RFP, a VNC host route
573 This mode may be though of as a mechanism to proxy RFP registrations
574 of BGP unicast routes on behalf of registering NVEs.
576 Multiple copies of the BGP route, one per matching NVE host route, will be
578 In other words, for a given BGP unicast route, each instance of a
579 RFP-registered host route to the unicast route's next hop will result
580 in an instance of an imported VNC route.
581 Each such imported VNC route will have a prefix equal to the original
582 BGP unicast route's prefix, and a next hop equal to the next hop of the
583 matching RFP-registered host route.
584 If there is no RFP-registered host route to the next hop of the BGP unicast
585 route, no corresponding VNC route will be imported.
587 The following translations are applied:
591 The Next Hop is set to the next hop of the NVE route (i.e., the
592 VN address of the NVE).
595 The extended community list in the new route is set to the
599 Any extended communities in the original BGP route
601 Any extended communities in the NVE route
603 An added route-origin extended community with the next hop of the
605 is added to the new route.
606 The value of the local administrator field defaults 5226 but may
607 be configured by the user via the @code{roo-ec-local-admin} parameter.
611 The Tunnel Encapsulation attribute is set to the value of the Tunnel
612 Encapsulation attribute of the NVE route, if any.
616 @subsubsection @code{bgp-direct-to-nve-groups} routes
618 Unicast routes from the main or a designated instance of BGP
619 may be redistributed to VNC as bgp-direct-to-nve-groups routes. These
620 routes are NOT announced via BGP,
621 but they are made available for local RFP lookup in response to
624 A non-main/default BGP instance is configured using the
625 @code{bgp multiple-instance} and @code{router bgp AS view NAME}
626 commands as described elsewhere in this document.
628 In order for a route in the unicast BGP RIB to be made
629 available to a querying NVE, there must already be, available to
630 that NVE, an (interior) VNC route matching the next hop address
631 of the unicast route.
632 When the unicast route is provided to the NVE, its next hop
633 is replaced by the next hop of the corresponding
634 NVE. If there are multiple longest-prefix-match VNC routes,
635 the unicast route will be replicated for each.
637 There is currently no policy (prefix-list or route-map) support
638 for @code{bgp-direct-to-nve-groups} routes.
640 @subsubsection Redistribution Command Syntax
642 @deffn {VNC} {vnc redistribute ipv4|ipv6 bgp|bgp-direct|ipv6 bgp-direct-to-nve-groups|connected|kernel|ospf|rip|static} {}
643 @deffnx {VNC} {vnc redistribute ipv4|ipv6 bgp-direct-to-nve-groups view @var{VIEWNAME}} {}
644 @deffnx {VNC} {no vnc redistribute ipv4|ipv6 bgp|bgp-direct|bgp-direct-to-nve-groups|connected|kernel|ospf|rip|static} {}
645 Import (or do not import) prefixes from another routing
646 protocols. Specify both the address family to import (@code{ipv4} or
647 @code{ipv6}) and the protocol (@code{bgp}, @code{bgp-direct},
648 @code{bgp-direct-to-nve-groups}, @code{connected},
649 @code{kernel}, @code{ospf}, @code{rip}, or @code{static}). Repeat
650 this statement as needed for each combination of address family and
652 Prefixes from protocol @code{bgp-direct} are imported from unicast BGP
653 in the same bgpd process.
654 Prefixes from all other protocols (including @code{bgp}) are imported
655 via the @code{zebra} kernel routing process.
658 @deffn {VNC} {vnc redistribute mode plain|nve-group|resolve-nve}
659 Redistribute routes from other protocols into VNC using the
661 Not all combinations of modes and protocols are supported.
664 @deffn {VNC} {vnc redistribute nve-group @var{group-name}} {}
665 @deffnx {VNC} {no vnc redistribute nve-group @var{group-name}} {}
666 When using @code{nve-group} mode,
667 assign (or do not assign) the NVE group @var{group-name} to routes
668 redistributed from another routing protocol. @var{group-name}
669 must be configured using @code{vnc nve-group}.
671 The VN and UN prefixes of the nve-group must both be configured,
672 and each prefix must be specified as a full-length (/32 for IPv4,
673 /128 for IPv6) prefix.
676 @deffn {VNC} {vnc redistribute lifetime @var{lifetime}|infinite} {}
677 Assign a registration lifetime, either @var{lifetime} seconds or
678 @code{infinite}, to prefixes redistributed from other routing
679 protocols as if they had been received via RFP registration messages
680 from an NVE. @var{lifetime} can be any integer between 1 and
681 4294967295, inclusive.
684 @deffn {VNC} {vnc redistribute resolve-nve roo-ec-local-admin @var{0-65536}}
685 Assign a value to the local-administrator subfield used in the
686 Route Origin extended community that is assigned to routes exported
687 under the @code{resolve-nve} mode. The default value is @var{5226}.
690 The following four @code{prefix-list} and @code{route-map} commands
691 may be specified in the context of an nve-group or not.
692 If they are specified in the context of an nve-group, they
693 apply only if the redistribution mode is @code{nve-group},
694 and then only for routes being redistributed from
696 If they are specified outside the context of an nve-group, then
697 they apply only for redistribution modes @code{plain} and @code{resolve-nve},
698 and then only for routes being redistributed from @code{bgp-direct}.
700 @deffn {VNC} {vnc redistribute bgp-direct (ipv4|ipv6) prefix-list @var{LIST-NAME}}
701 When redistributing @code{bgp-direct} routes,
702 specifies that the named prefix-list should be applied.
705 @deffn {VNC} {vnc redistribute bgp-direct no (ipv4|ipv6) prefix-list}
706 When redistributing @code{bgp-direct} routes,
707 specifies that no prefix-list should be applied.
710 @deffn {VNC} {vnc redistribute bgp-direct route-map @var{MAP-NAME}}
711 When redistributing @code{bgp-direct} routes,
712 specifies that the named route-map should be applied.
715 @deffn {VNC} {vnc redistribute bgp-direct no route-map}
716 When redistributing @code{bgp-direct} routes,
717 specifies that no route-map should be applied.
720 @node Configuring Export of Routes to Other Routing Protocols
721 @subsection Configuring Export of Routes to Other Routing Protocols
723 Routes from VNC (both for RFP and for redistribution via BGP) can be
724 provided to other protocols, either via zebra or directly to BGP.
726 It is important to note that when exporting routes to other protocols,
727 the downstream protocol must also be configured to import the routes.
728 For example, when VNC routes are exported to unicast BGP, the BGP
729 configuration must include a corresponding @code{redistribute vnc-direct}
732 @deffn {VNC} {export bgp|zebra mode none|group-nve|registering-nve|ce}
733 Specify how routes should be exported to bgp or zebra.
734 If the mode is @code{none}, routes are not exported.
735 If the mode is @code{group-nve}, routes are exported according
736 to nve-group configuration (@pxref{VNC NVE Group Configuration}): if a group is configured to
737 allow export, then each prefix visible to the group is exported
738 with next hops set to the currently-registered NVEs.
739 If the mode is @code{registering-nve}, then all VNC routes are
740 exported with their original next hops.
741 If the mode is @code{ce}, only VNC routes that have an NVE connected CE Router
742 encoded in a Route Origin Extended Community are exported.
743 This extended community must have an administrative value that
744 matches the configured @code{roo-ec-local-admin} value.
745 The next hop of the exported route is set to the encoded
746 NVE connected CE Router.
748 The default for both bgp and zebra is mode @code{none}.
751 @deffn {VNC} {vnc export bgp|zebra group-nve group @var{group-name}}
752 @deffnx {VNC} {vnc export bgp|zebra group-nve no group @var{group-name}}
753 When export mode is @code{group-nve},
754 export (or do not export) prefixes from the specified nve-group
755 to unicast BGP or to zebra.
756 Repeat this statement as needed for each nve-group to be exported.
757 Each VNC prefix that is exported will result in N exported routes to the
758 prefix, each with a next hop corresponding to one of the N NVEs currently
759 associated with the nve-group.
762 @deffn {VNC} export bgp|zebra ipv4|ipv6 prefix-list LIST-NAME
763 When export mode is @code{ce} or @code{registering-nve},
764 specifies that the named prefix-list should be applied to routes
765 being exported to bgp or zebra.
766 Prefix-lists for ipv4 and ipv6 are independent of each other.
769 @deffn {VNC} export bgp|zebra no ipv4|ipv6 prefix-list
770 When export mode is @code{ce} or @code{registering-nve},
771 specifies that no prefix-list should be applied to routes
772 being exported to bgp or zebra.
775 @deffn {VNC} export bgp|zebra route-map MAP-NAME
776 When export mode is @code{ce} or @code{registering-nve},
777 specifies that the named route-map should be applied to routes
778 being exported to bgp or zebra.
781 @deffn {VNC} export bgp|zebra no route-map
782 When export mode is @code{ce} or @code{registering-nve},
783 specifies that no route-map should be applied to routes
784 being exported to bgp or zebra.
787 When the export mode is @code{group-nve}, policy for exported
788 routes is specified per-NVE-group inside a @code{nve-group} @var{RFG-NAME} block
789 via the following commands(@pxref{VNC NVE Group Configuration}):
791 @deffn {VNC} {export bgp|zebra route-map MAP-NAME}
792 This command is valid inside a @code{nve-group} @var{RFG-NAME} block.
793 It specifies that the named route-map should be applied to routes
794 being exported to bgp or zebra.
797 @deffn {VNC} {export bgp|zebra no route-map}
798 This command is valid inside a @code{nve-group} @var{RFG-NAME} block.
799 It specifies that no route-map should be applied to routes
800 being exported to bgp or zebra.
803 @deffn {VNC} {export bgp|zebra ipv4|ipv6 prefix-list LIST-NAME}
804 This command is valid inside a @code{nve-group} @var{RFG-NAME} block.
805 It specifies that the named prefix-list filter should be applied to
806 routes being exported to bgp or zebra.
807 Prefix-lists for ipv4 and ipv6 are independent of each other.
810 @deffn {VNC} {export bgp|zebra no ipv4|ipv6 prefix-list}
811 This command is valid inside a @code{nve-group} @var{RFG-NAME} block.
812 It specifies that no prefix-list filter should be applied to
813 routes being exported to bgp or zebra.
816 @node Manual Address Control
817 @section Manual Address Control
819 The commands in this section can be used to augment normal dynamic VNC.
820 The @code{add vnc} commands can be used to manually add IP prefix or
821 Ethernet MAC address forwarding information. The @code{clear vnc}
822 commands can be used to remove manually and dynamically added
825 @deffn {Command} {add vnc prefix (A.B.C.D/M|X:X::X:X/M) vn (A.B.C.D|X:X::X:X) un (A.B.C.D|X:X::X:X) [cost <0-255>] [lifetime (infinite|<1-4294967295>)] [local-next-hop (A.B.C.D|X:X::X:X) [local-cost <0-255>]]} {}
826 Register an IP prefix on behalf of the NVE identified by the VN and UN
827 addresses. The @code{cost} parameter provides the administrative
828 preference of the forwarding information for remote advertisement. If
829 omitted, it defaults to 255 (lowest preference). The @code{lifetime}
830 parameter identifies the period, in seconds, that the information
831 remains valid. If omitted, it defaults to @var{infinite}. The optional
832 @code{local-next-hop} parameter is used to configure a nexthop to be
833 used by an NVE to reach the prefix via a locally connected CE router.
834 This information remains local to the NVA, i.e., not passed to other
835 NVAs, and is only passed to registered NVEs. When specified, it is also
836 possible to provide a @code{local-cost} parameter to provide a
837 forwarding preference. If omitted, it defaults to 255 (lowest
842 @deffn {Command} {add vnc mac xx:xx:xx:xx:xx:xx virtual-network-identifier <1-4294967295> vn (A.B.C.D|X:X::X:X) un (A.B.C.D|X:X::X:X) [prefix (A.B.C.D/M|X:X::X:X/M)] [cost <0-255>] [lifetime (infinite|<1-4294967295>)]} {}
843 Register a MAC address for a logical Ethernet (L2VPN) on behalf of the
844 NVE identified by the VN and UN addresses.
845 The optional @code{prefix} parameter is to support enable IP address
846 mediation for the given prefix. The @code{cost} parameter provides the administrative
847 preference of the forwarding information. If omitted, it defaults to
848 255. The @code{lifetime} parameter identifies the period, in seconds,
849 that the information remains valid. If omitted, it defaults to
853 @deffn {Command} {clear vnc prefix (*|A.B.C.D/M|X:X::X:X/M) (*|[(vn|un) (A.B.C.D|X:X::X:X|*) [(un|vn) (A.B.C.D|X:X::X:X|*)] [mac xx:xx:xx:xx:xx:xx] [local-next-hop (A.B.C.D|X:X::X:X)])} {}
854 Delete the information identified by prefix, VN address, and UN address.
855 Any or all of these parameters may be wilcarded to (potentially) match
856 more than one registration.
857 The optional @code{mac} parameter specifies a layer-2 MAC address
858 that must match the registration(s) to be deleted.
859 The optional @code{local-next-hop} parameter is used to
860 delete specific local nexthop information.
863 @deffn {Command} {clear vnc mac (*|xx:xx:xx:xx:xx:xx) virtual-network-identifier (*|<1-4294967295>) (*|[(vn|un) (A.B.C.D|X:X::X:X|*) [(un|vn) (A.B.C.D|X:X::X:X|*)] [prefix (*|A.B.C.D/M|X:X::X:X/M)])} {}
864 Delete mac forwarding information.
865 Any or all of these parameters may be wilcarded to (potentially) match
866 more than one registration.
867 The default value for the @code{prefix} parameter is the wildcard value @var{*}.
870 @deffn {Command} {clear vnc nve (*|((vn|un) (A.B.C.D|X:X::X:X) [(un|vn) (A.B.C.D|X:X::X:X)])) } {}
871 Delete prefixes associated with the NVE specified by the given VN and UN
873 It is permissible to specify only one of VN or UN, in which case
874 any matching registration will be deleted.
875 It is also permissible to specify @code{*} in lieu of any VN or UN
876 address, in which case all registrations will match.
879 @node Other VNC-Related Commands
880 @section Other VNC-Related Commands
882 Note: VNC-Related configuration can be obtained via the @code{show
883 running-configuration} command when in @code{enable} mode.
885 The following commands are used to clear and display
886 Virtual Network Control related information:
888 @deffn {COMMAND} {clear vnc counters} {}
889 Reset the counter values stored by the NVA. Counter
890 values can be seen using the @code{show vnc} commands listed above. This
891 command is only available in @code{enable} mode.
894 @deffn {Command} {show vnc summary} {}
895 Print counter values and other general information
896 about the NVA. Counter values can be reset
897 using the @code{clear vnc counters} command listed below.
900 @deffn {Command} {show vnc nves} {}
901 @deffnx {Command} {show vnc nves vn|un @var{address}} {}
902 Display the NVA's current clients. Specifying @var{address}
903 limits the output to the NVEs whose addresses match @var{address}.
904 The time since the NVA last communicated with the NVE, per-NVE
905 summary counters and each NVE's addresses will be displayed.
908 @deffn {Command} {show vnc queries} {}
909 @deffnx {Command} {show vnc queries @var{prefix}} {}
910 Display active Query information. Queries remain valid for the default
911 Response Lifetime (@pxref{VNC Defaults Configuration}) or NVE-group
912 Response Lifetime (@pxref{VNC NVE Group Configuration}). Specifying
913 @var{prefix} limits the output to Query Targets that fall within
916 Query information is provided for each querying NVE, and includes the
917 Query Target and the time remaining before the information is removed.
920 @deffn {Command} {show vnc registrations [all|local|remote|holddown|imported]} {}
921 @deffnx {Command} {show vnc registrations [all|local|remote|holddown|imported] @var{prefix}} {}
922 Display local, remote, holddown, and/or imported registration information.
923 Local registrations are routes received via RFP, which are present in the
924 NVA Registrations Cache.
925 Remote registrations are routes received via BGP (VPN SAFIs), which
926 are present in the NVE-group import tables.
927 Holddown registrations are local and remote routes that have been
928 withdrawn but whose holddown timeouts have not yet elapsed.
929 Imported information represents routes that are imported into NVA and
930 are made available to querying NVEs. Depending on configuration,
931 imported routes may also be advertised via BGP.
932 Specifying @var{prefix} limits the output to the registered prefixes that
933 fall within @var{prefix}.
935 Registration information includes the registered prefix, the registering
936 NVE addresses, the registered administrative cost, the registration
937 lifetime and the time since the information was registered or, in the
938 case of Holddown registrations, the amount of time remaining before the
939 information is removed.
942 @deffn {Command} {show vnc responses [active|removed]} {}
943 @deffnx {Command} {show vnc responses [active|removed] @var{prefix}} {}
944 Display all, active and/or removed response information which are
945 present in the NVA Responses Cache. Responses remain valid for the
946 default Response Lifetime (@pxref{VNC Defaults Configuration}) or
947 NVE-group Response Lifetime (@pxref{VNC NVE Group Configuration}.)
948 When Removal Responses are enabled (@pxref{General VNC Configuration}),
949 such responses are listed for the Response Lifetime. Specifying
950 @var{prefix} limits the output to the addresses that fall within
953 Response information is provided for each querying NVE, and includes
954 the response prefix, the prefix-associated registering NVE addresses,
955 the administrative cost, the provided response lifetime and the time
956 remaining before the information is to be removed or will become inactive.
959 @deffn {Command} {show memory vnc} {}
960 Print the number of memory items allocated by the NVA.
963 @node Example VNC and VNC-GW Configurations
964 @section Example VNC and VNC-GW Configurations
967 * Mesh NVA Configuration::
968 * Mesh NVA and VNC-GW Configuration::
969 * VNC with Frr Route Reflector Configuration::
970 * VNC with Commercial Route Reflector Configuration::
971 * VNC with Redundant Route Reflectors Configuration::
972 @c * Interfacing VNC to an IGP::
975 @node Mesh NVA Configuration
976 @subsection Mesh NVA Configuration
978 This example includes three NVAs, nine NVEs, and two NVE groups. Note
979 that while not shown, a single physical device may support multiple
980 logical NVEs. @ref{fig:fig-vnc-mesh} shows @code{NVA 1}
981 (192.168.1.100), @code{NVA 2} (192.168.1.101), and @code{NVA 3}
982 (192.168.1.102), which are connected in a full mesh. Each is a
983 member of the autonomous system 64512. Each NVA provides VNC
984 services to three NVE clients in the 172.16.0.0/16 virtual-network
985 address range. The 172.16.0.0/16 address range is partitioned into
986 two NVE groups, @code{group1} (172.16.0.0/17) and @code{group2}
989 Each NVE belongs to either NVE group @code{group1} or NVE group
990 @code{group2}. The NVEs @code{NVE 1}, @code{NVE 2}, @code{NVE
991 4}, @code{NVE 7}, and @code{NVE 8} are members of the NVE group
992 @code{group1}. The NVEs @code{NVE 3}, @code{NVE 5}, @code{NVE
993 6}, and @code{NVE 9} are members of the NVE group @code{group2}.
995 Each NVA advertises NVE underlay-network IP addresses using the
996 Tunnel Encapsulation Attribute.
998 @float Figure,fig:fig-vnc-mesh
999 @center @image{fig-vnc-mesh,400pt,,Three-way Mesh}
1000 @caption{A three-way full mesh with three NVEs per NVA}
1003 @file{bgpd.conf} for @code{NVA 1} (192.168.1.100)
1007 bgp router-id 192.168.1.100
1009 neighbor 192.168.1.101 remote-as 64512
1010 neighbor 192.168.1.102 remote-as 64512
1012 address-family vpnv4
1013 neighbor 192.168.1.101 activate
1014 neighbor 192.168.1.102 activate
1019 response-lifetime 200
1020 rt both 1000:1 1000:2
1023 vnc nve-group group1
1024 prefix vn 172.16.0.0/17
1028 vnc nve-group group2
1029 prefix vn 172.16.128.0/17
1036 @file{bgpd.conf} for @code{NVA 2} (192.168.1.101):
1040 bgp router-id 192.168.1.101
1042 neighbor 192.168.1.100 remote-as 64512
1043 neighbor 192.168.1.102 remote-as 64512
1045 address-family vpnv4
1046 neighbor 192.168.1.100 activate
1047 neighbor 192.168.1.102 activate
1050 vnc nve-group group1
1051 prefix vn 172.16.0.0/17
1053 response-lifetime 200
1054 rt both 1000:1 1000:2
1059 @file{bgpd.conf} for @code{NVA 3} (192.168.1.102):
1063 bgp router-id 192.168.1.102
1065 neighbor 192.168.1.101 remote-as 64512
1066 neighbor 192.168.1.102 remote-as 64512
1068 address-family vpnv4
1069 neighbor 192.168.1.100 activate
1070 neighbor 192.168.1.101 activate
1075 response-lifetime 200
1076 rt both 1000:1 1000:2
1079 vnc nve-group group1
1080 prefix vn 172.16.128.0/17
1085 @node Mesh NVA and VNC-GW Configuration
1086 @subsection Mesh NVA and VNC-GW Configuration
1088 This example includes two NVAs, each with two associated NVEs, and two
1089 VNC-GWs, each supporting two CE routers physically attached to the four
1090 NVEs. Note that this example is showing a more complex configuration
1091 where VNC-GW is separated from normal NVA functions; it is equally
1092 possible to simplify the configuration and combine NVA and VNC-GW
1093 functions in a single frr instance.
1095 @float Figure,fig:fig-vnc-gw
1096 @center @image{fig-vnc-gw,400pt,,Frr VNC Gateway}
1097 @caption{Meshed NVEs and VNC-GWs}
1100 As shown in @ref{fig:fig-vnc-gw}, NVAs and VNC-GWs are connected in a
1101 full iBGP mesh. The VNC-GWs each have two CEs configured as
1102 route-reflector clients. Each client provides BGP updates with unicast
1103 routes that the VNC-GW reflects to the other client. The VNC-GW also
1104 imports these unicast routes into VPN routes to be shared with the other
1105 VNC-GW and the two NVAs. This route importation is controlled with the
1106 @code{vnc redistribute} statements shown in the configuration.
1107 Similarly, registrations sent by NVEs via RFP to the NVAs are exported
1108 by the VNC-GWs to the route-reflector clients as unicast routes. RFP
1109 registrations exported this way have a next-hop address of the CE behind
1110 the connected (registering) NVE. Exporting VNC routes as IPv4 unicast
1111 is enabled with the @code{vnc export} command below.
1113 The configuration for @code{VNC-GW 1} is shown below.
1116 bgp router-id 192.168.1.101
1117 bgp cluster-id 1.2.3.4
1118 redistribute vnc-direct
1119 neighbor 192.168.1.102 remote-as 64512
1120 no neighbor 192.168.1.102 activate
1121 neighbor 192.168.1.103 remote-as 64512
1122 no neighbor 192.168.1.103 activate
1123 neighbor 192.168.1.104 remote-as 64512
1124 no neighbor 192.168.1.104 activate
1125 neighbor 172.16.1.2 remote-as 64512
1126 neighbor 172.16.1.2 route-reflector-client
1127 neighbor 172.16.2.2 remote-as 64512
1128 neighbor 172.16.2.2 route-reflector-client
1130 address-family vpnv4 unicast
1131 neighbor 192.168.1.102 activate
1132 neighbor 192.168.1.103 activate
1133 neighbor 192.168.1.104 activate
1135 vnc export bgp mode ce
1136 vnc redistribute mode resolve-nve
1137 vnc redistribute ipv4 bgp-direct
1141 Note that in the VNC-GW configuration, the neighboring VNC-GW and
1142 NVAs each have a statement disabling the IPv4 unicast address family.
1143 IPv4 unicast is on by default and this prevents the other VNC-GW and
1144 NVAs from learning unicast routes advertised by the route-reflector clients.
1146 Configuration for @code{NVA 2}:
1149 bgp router-id 192.168.1.104
1150 neighbor 192.168.1.101 remote-as 64512
1151 no neighbor 192.168.1.101 activate
1152 neighbor 192.168.1.102 remote-as 64512
1153 no neighbor 192.168.1.102 activate
1154 neighbor 192.168.1.103 remote-as 64512
1155 no neighbor 192.168.1.103 activate
1156 address-family vpnv4 unicast
1157 neighbor 192.168.1.101 activate
1158 neighbor 192.168.1.102 activate
1159 neighbor 192.168.1.103 activate
1162 response-lifetime 3600
1165 prefix vn 172.16.1.1/32
1166 response-lifetime 3600
1167 rt both 1000:1 1000:2
1170 prefix vn 172.16.2.1/32
1171 response-lifetime 3600
1172 rt both 1000:1 1000:2
1177 @c TBD make this its own example:
1179 @c @float Figure,fig:fig-vnc-gw-rr
1180 @c @center @image{fig-vnc-gw-rr,400pt,,Frr VNC Gateway with RR}
1182 @c An NVA can also import unicast routes from BGP without advertising the
1183 @c imported routes as VPN routes. Such imported routes, while not
1184 @c distributed to other NVAs or VNC-GWs, are are available to NVEs via
1185 @c RFP query messages sent to the NVA. @ref{fig:fig-vnc-gw-rr}
1186 @c shows an example topology where unicast routes are imported into NVAs
1187 @c from a Route Reflector. (@pxref{Route Reflector} for route reflector
1188 @c configuration details.) The following three lines can be added to the
1189 @c @code{NVA 1} and @code{NVA 2} configurations to import routes into VNC
1190 @c for local VNC use:
1193 @c neighbor 192.168.1.105 remote-as 64512
1194 @c vnc redistribute mode plain
1195 @c vnc redistribute ipv4 bgp-direct-to-nve-groups
1198 @node VNC with Frr Route Reflector Configuration
1199 @subsection VNC with Frr Route Reflector Configuration
1200 A route reflector eliminates the need for a fully meshed NVA
1201 network by acting as the hub between NVAs.
1202 @ref{fig:fig-vnc-frr-route-reflector} shows BGP route reflector
1203 @code{BGP Route Reflector 1} (192.168.1.100) as a route reflector for
1204 NVAs @code{NVA 2}(192.168.1.101) and @code{NVA 3}
1207 @float Figure,fig:fig-vnc-frr-route-reflector
1208 @center @image{fig-vnc-frr-route-reflector,400pt,,Frr Route Reflector}
1209 @caption{Two NVAs and a BGP Route Reflector}
1212 @code{NVA 2} and @code{NVA 3}
1213 advertise NVE underlay-network IP addresses using the Tunnel Encapsulation Attribute.
1214 @code{BGP Route Reflector 1} ``reflects'' advertisements from
1215 @code{NVA 2} to @code{NVA 3} and vice versa.
1217 As in the example of @ref{Mesh NVA Configuration}, there are two NVE groups.
1218 The 172.16.0.0/16 address range is partitioned into two NVE groups,
1219 @code{group1} (172.16.0.0/17) and @code{group2} (172.16.128.0/17).
1220 The NVE @code{NVE 4}, @code{NVE 7}, and @code{NVE 8} are
1221 members of the NVE group @code{group1}. The NVEs @code{NVE 5},
1222 @code{NVE 6}, and @code{NVE 9} are members of the NVE group
1225 @file{bgpd.conf} for @code{BGP Route Reflector 1} on 192.168.1.100:
1229 bgp router-id 192.168.1.100
1231 neighbor 192.168.1.101 remote-as 64512
1232 neighbor 192.168.1.101 port 7179
1233 neighbor 192.168.1.101 description iBGP-client-192-168-1-101
1234 neighbor 192.168.1.101 route-reflector-client
1236 neighbor 192.168.1.102 remote-as 64512
1237 neighbor 192.168.1.102 port 7179
1238 neighbor 192.168.1.102 description iBGP-client-192-168-1-102
1239 neighbor 192.168.1.102 route-reflector-client
1241 address-family vpnv4
1242 neighbor 192.168.1.101 activate
1243 neighbor 192.168.1.102 activate
1245 neighbor 192.168.1.101 route-reflector-client
1246 neighbor 192.168.1.102 route-reflector-client
1252 @file{bgpd.conf} for @code{NVA 2} on 192.168.1.101:
1256 bgp router-id 192.168.1.101
1258 neighbor 192.168.1.100 remote-as 64512
1260 address-family vpnv4
1261 neighbor 192.168.1.100 activate
1264 vnc nve-group group1
1265 prefix vn 172.16.0.0/17
1267 response-lifetime 200
1268 rt both 1000:1 1000:2
1273 @file{bgpd.conf} for @code{NVA 2} on 192.168.1.102:
1277 bgp router-id 192.168.1.102
1279 neighbor 192.168.1.100 remote-as 64512
1281 address-family vpnv4
1282 neighbor 192.168.1.100 activate
1287 response-lifetime 200
1288 rt both 1000:1 1000:2
1291 vnc nve-group group1
1292 prefix vn 172.16.128.0/17
1297 While not shown, an NVA can also be configured as a route reflector.
1299 @node VNC with Commercial Route Reflector Configuration
1300 @subsection VNC with Commercial Route Reflector Configuration
1301 This example is identical to @ref{VNC with Frr Route Reflector
1302 Configuration} with the exception that the route reflector is a
1303 commercial router. Only the
1304 VNC-relevant configuration is provided.
1306 @float Figure,fig:fig-vnc-commercial-route-reflector
1307 @center @image{fig-vnc-commercial-route-reflector,400pt,,Commercial Route Reflector}
1308 @caption{Two NVAs with a commercial route reflector}
1311 @file{bgpd.conf} for BGP route reflector @code{Commercial Router} on 192.168.1.104:
1317 route 172.16.0.0/16 next-hop 192.168.1.104;
1320 autonomous-system 64512;
1323 resolution-ribs inet.0;
1326 resolution-ribs inet.0;
1347 cluster 192.168.1.104;
1348 neighbor 192.168.1.101;
1349 neighbor 192.168.1.102;
1354 policy-statement h {
1357 as-path-prepend 64512;
1364 @file{bgpd.conf} for @code{NVA 2} on 192.168.1.101:
1368 bgp router-id 192.168.1.101
1370 neighbor 192.168.1.100 remote-as 64512
1372 address-family vpnv4
1373 neighbor 192.168.1.100 activate
1376 vnc nve-group group1
1377 prefix vn 172.16.0.0/17
1379 response-lifetime 200
1380 rt both 1000:1 1000:2
1385 @file{bgpd.conf} for @code{NVA 3} on 192.168.1.102:
1389 bgp router-id 192.168.1.102
1391 neighbor 192.168.1.100 remote-as 64512
1393 address-family vpnv4
1394 neighbor 192.168.1.100 activate
1399 response-lifetime 200
1400 rt both 1000:1 1000:2
1403 vnc nve-group group1
1404 prefix vn 172.16.128.0/17
1409 @node VNC with Redundant Route Reflectors Configuration
1410 @subsection VNC with Redundant Route Reflectors Configuration
1411 This example combines the previous two (@ref{VNC with Frr Route
1412 Reflector Configuration} and @ref{VNC with Commercial Route Reflector
1413 Configuration}) into a redundant route reflector configuration. BGP
1414 route reflectors @code{BGP Route Reflector 1} and @code{Commercial Router}
1415 are the route reflectors for NVAs @code{NVA 2} and
1416 @code{NVA 3}. The two NVAs have connections to both
1419 @float Figure,fig:fig-vnc-redundant-route-reflectors
1420 @center @image{fig-vnc-redundant-route-reflectors,400pt,,Redundant Route Reflectors}
1421 @caption{Frr-based NVA with redundant route reflectors}
1424 @file{bgpd.conf} for @code{Bgpd Route Reflector 1} on 192.168.1.100:
1428 bgp router-id 192.168.1.100
1429 bgp cluster-id 192.168.1.100
1431 neighbor 192.168.1.104 remote-as 64512
1433 neighbor 192.168.1.101 remote-as 64512
1434 neighbor 192.168.1.101 description iBGP-client-192-168-1-101
1435 neighbor 192.168.1.101 route-reflector-client
1437 neighbor 192.168.1.102 remote-as 64512
1438 neighbor 192.168.1.102 description iBGP-client-192-168-1-102
1439 neighbor 192.168.1.102 route-reflector-client
1441 address-family vpnv4
1442 neighbor 192.168.1.101 activate
1443 neighbor 192.168.1.102 activate
1444 neighbor 192.168.1.104 activate
1446 neighbor 192.168.1.101 route-reflector-client
1447 neighbor 192.168.1.102 route-reflector-client
1452 @file{bgpd.conf} for @code{NVA 2} on 192.168.1.101:
1456 bgp router-id 192.168.1.101
1458 neighbor 192.168.1.100 remote-as 64512
1459 neighbor 192.168.1.104 remote-as 64512
1461 address-family vpnv4
1462 neighbor 192.168.1.100 activate
1463 neighbor 192.168.1.104 activate
1466 vnc nve-group group1
1467 prefix vn 172.16.0.0/17
1469 response-lifetime 200
1470 rt both 1000:1 1000:2
1475 @file{bgpd.conf} for @code{NVA 3} on 192.168.1.102:
1479 bgp router-id 192.168.1.102
1481 neighbor 192.168.1.100 remote-as 64512
1482 neighbor 192.168.1.104 remote-as 64512
1484 address-family vpnv4
1485 neighbor 192.168.1.100 activate
1486 neighbor 192.168.1.104 activate
1491 response-lifetime 200
1492 rt both 1000:1 1000:2
1495 vnc nve-group group1
1496 prefix vn 172.16.128.0/17
1501 @file{bgpd.conf} for the Commercial Router route reflector on
1507 route 172.16.0.0/16 next-hop 192.168.1.104;
1510 autonomous-system 64512;
1513 resolution-ribs inet.0;
1516 resolution-ribs inet.0;
1537 cluster 192.168.1.104;
1538 neighbor 192.168.1.101;
1539 neighbor 192.168.1.102;
1553 neighbor 192.168.1.100;
1559 policy-statement h {
1562 as-path-prepend 64512;
1570 @section Release Notes
1572 @c A paragraph that introduces our release notes.
1574 @c outer list, one item per VNC release, items preceded by bullet
1581 @evenheading @thispage@|@|@thistitle
1582 @oddheading @thischapter@|@|@thispage