10 The *Diffusing Update ALgorithm*, a :term:`Bellman-Ford` based routing
11 algorithm used by EIGRP.
13 EIGRP -- Routing Information Protocol is widely deployed interior gateway
14 routing protocol. EIGRP was developed in the 1990's. EIGRP is a
15 :term:`distance-vector` protocol and is based on the :term:`DUAL` algorithms.
16 As a distance-vector protocol, the EIGRP router send updates to its
17 neighbors as networks change, thus allowing the convergence to a
20 *eigrpd* supports EIGRP as described in RFC7868
22 .. _starting-and-stopping-eigrpd:
24 Starting and Stopping eigrpd
25 ============================
27 The default configuration file name of *eigrpd*'s is :file:`eigrpd.conf`. When
28 invocation *eigrpd* searches directory |INSTALL_PREFIX_ETC|. If
29 :file:`eigrpd.conf` is not there next search current directory. If an
30 integrated config is specified configuration is written into :file:`frr.conf`.
32 The EIGRP protocol requires interface information maintained by *zebra* daemon.
33 So running *zebra* is mandatory to run *eigrpd*. Thus minimum sequence for
42 Please note that *zebra* must be invoked before *eigrpd*.
44 To stop *eigrpd*, please use ::
45 kill `cat /var/run/eigrpd.pid`
47 Certain signals have special meanings to *eigrpd*.
49 +------------------+-----------------------------------------------------------+
51 +==================+===========================================================+
52 | SIGHUP & SIGUSR1 | Rotate the log file |
53 +------------------+-----------------------------------------------------------+
54 | SIGINT & SIGTERM | Sweep all installed EIGRP routes and gracefully terminate |
55 +------------------+-----------------------------------------------------------+
58 *eigrpd* invocation options. Common options that can be specified
59 (:ref:`common-invocation-options`).
63 .. _eigrp-configuration:
68 .. index:: router eigrp (1-65535)
69 .. clicmd:: router eigrp (1-65535)
71 The `router eigrp` command is necessary to enable EIGRP. To disable EIGRP,
72 use the `no router eigrp (1-65535)` command. EIGRP must be enabled before
73 carrying out any of the EIGRP commands.
75 .. index:: no router eigrp (1-65535)
76 .. clicmd:: no router eigrp (1-65535)
80 .. index:: network NETWORK
81 .. clicmd:: network NETWORK
83 .. index:: no network NETWORK
84 .. clicmd:: no network NETWORK
86 Set the EIGRP enable interface by `network`. The interfaces which
87 have addresses matching with `network` are enabled.
89 This group of commands either enables or disables EIGRP interfaces between
90 certain numbers of a specified network address. For example, if the
91 network for 10.0.0.0/24 is EIGRP enabled, this would result in all the
92 addresses from 10.0.0.0 to 10.0.0.255 being enabled for EIGRP. The `no
93 network` command will disable EIGRP for the specified network.
95 Below is very simple EIGRP configuration. Interface `eth0` and
96 interface which address match to `10.0.0.0/8` are EIGRP enabled.
106 .. index:: passive-interface (IFNAME|default)
107 .. clicmd:: passive-interface (IFNAME|default)
109 .. index:: no passive-interface IFNAME
110 .. clicmd:: no passive-interface IFNAME
112 This command sets the specified interface to passive mode. On passive mode
113 interface, all receiving packets are ignored and eigrpd does not send either
114 multicast or unicast EIGRP packets except to EIGRP neighbors specified with
115 `neighbor` command. The interface may be specified as `default` to make
116 eigrpd default to passive on all interfaces.
118 The default is to be passive on all interfaces.
120 .. _how-to-announce-eigrp-route:
122 How to Announce EIGRP route
123 ===========================
125 .. index:: redistribute kernel
126 .. clicmd:: redistribute kernel
128 .. index:: redistribute kernel metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
129 .. clicmd:: redistribute kernel metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
131 .. index:: no redistribute kernel
132 .. clicmd:: no redistribute kernel
134 `redistribute kernel` redistributes routing information from kernel route
135 entries into the EIGRP tables. `no redistribute kernel` disables the routes.
137 .. index:: redistribute static
138 .. clicmd:: redistribute static
140 .. index:: redistribute static metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
141 .. clicmd:: redistribute static metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
143 .. index:: no redistribute static
144 .. clicmd:: no redistribute static
146 `redistribute static` redistributes routing information from static route
147 entries into the EIGRP tables. `no redistribute static` disables the routes.
149 .. index:: redistribute connected
150 .. clicmd:: redistribute connected
152 .. index:: redistribute connected metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
153 .. clicmd:: redistribute connected metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
155 .. index:: no redistribute connected
156 .. clicmd:: no redistribute connected
158 Redistribute connected routes into the EIGRP tables. `no redistribute
159 connected` disables the connected routes in the EIGRP tables. This command
160 redistribute connected of the interface which EIGRP disabled. The connected
161 route on EIGRP enabled interface is announced by default.
163 .. index:: redistribute ospf
164 .. clicmd:: redistribute ospf
166 .. index:: redistribute ospf metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
167 .. clicmd:: redistribute ospf metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
169 .. index:: no redistribute ospf
170 .. clicmd:: no redistribute ospf
172 `redistribute ospf` redistributes routing information from ospf route
173 entries into the EIGRP tables. `no redistribute ospf` disables the routes.
175 .. index:: redistribute bgp
176 .. clicmd:: redistribute bgp
178 .. index:: redistribute bgp metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
179 .. clicmd:: redistribute bgp metric (1-4294967295) (0-4294967295) (0-255) (1-255) (1-65535)
181 .. index:: no redistribute bgp
182 .. clicmd:: no redistribute bgp
184 `redistribute bgp` redistributes routing information from bgp route entries
185 into the EIGRP tables. `no redistribute bgp` disables the routes.
187 .. _show-eigrp-information:
189 Show EIGRP Information
190 ======================
192 .. index:: show ip eigrp topology
193 .. clicmd:: show ip eigrp topology
195 Display current EIGRP status.
199 eigrpd> **show ip eigrp topology**
202 EIGRP Topology Table for AS(4)/ID(0.0.0.0)
204 Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply
205 r - reply Status, s - sia Status
207 P 10.0.2.0/24, 1 successors, FD is 256256, serno: 0
208 via Connected, enp0s3
214 Debug for EIGRP protocol.
216 .. index:: debug eigrp packets
217 .. clicmd:: debug eigrp packets
221 ``debug eigrp`` will show EIGRP packets that are sent and received.
223 .. index:: debug eigrp transmit
224 .. clicmd:: debug eigrp transmit
226 Debug eigrp transmit events
228 ``debug eigrp transmit`` will display detailed information about the EIGRP
231 .. index:: show debugging eigrp
232 .. clicmd:: show debugging eigrp
234 Display *eigrpd*'s debugging option.
236 ``show debugging eigrp`` will show all information currently set for eigrpd