tools/multiple-bgpd.sh

   1 #!/bin/bash
   2
   3 # Public domain, not copyrighted..
   4
   5 NUM=5
   6 VTYBASE=2610
   7 ASBASE=64560
   8 BGPD=/path/to/bgpd
   9 PREFIX=192.168.145.
  10 #PREFIX=3ffe:123:456::
  11 ADDRPLEN=32
  12 CONFBASE=/tmp
  13 PIDBASE=/var/run/frr
  14 CHOWNSTR=frr:frr
  15
  16 for H in `seq 1 ${NUM}` ; do
  17         CONF="${CONFBASE}"/bgpd${H}.conf
  18         ADDR=${PREFIX}${H}
  19
  20         if [ ! -e "$CONF" ] ; then
  21                 # This sets up a ring of bgpd peerings
  22                 NEXT=$(( ($H % ${NUM}) + 1 ))
  23                 PREV=$(( (($H + $NUM - 2) % ${NUM}) + 1 ))
  24                 NEXTADDR="${PREFIX}${NEXT}"
  25                 NEXTAS=$((${ASBASE} + $NEXT))
  26                 PREVADDR="${PREFIX}${PREV}"
  27                 PREVAS=$((${ASBASE} + $PREV))
  28                 ASN=$((64560+${H}))
  29
  30                 # Edit config to suit.
  31                 cat > "$CONF" <<- EOF
  32                         password whatever
  33                         service advanced-vty
  34                         !
  35                         router bgp ${ASN}
  36                          bgp router-id ${ADDR}
  37                          network 10.${H}.1.0/24 pathlimit 1
  38                          network 10.${H}.2.0/24 pathlimit 2
  39                          network 10.${H}.3.0/24 pathlimit 3
  40                          neighbor default peer-group
  41                          neighbor default update-source ${ADDR}
  42                          neighbor default capability orf prefix-list both
  43                          neighbor default soft-reconfiguration inbound
  44                          neighbor default route-map test out
  45                          neighbor ${NEXTADDR} remote-as ${NEXTAS}
  46                          neighbor ${NEXTADDR} peer-group default
  47                          neighbor ${PREVADDR} remote-as ${PREVAS}
  48                          neighbor ${PREVADDR} peer-group default
  49                         !
  50                          address-family ipv6
  51                          network 3ffe:${H}::/48
  52                          network 3ffe:${H}:1::/48 pathlimit 1
  53                          network 3ffe:${H}:2::/48 pathlimit 3
  54                          network 3ffe:${H}:3::/48 pathlimit 3
  55                          neighbor default activate
  56                          neighbor default capability orf prefix-list both
  57                          neighbor default default-originate
  58                          neighbor default route-map test out
  59                          neighbor ${NEXTADDR} peer-group default
  60                          neighbor ${PREVADDR} peer-group default
  61                          exit-address-family
  62                         !
  63                         ! bgpd still has problems with extcommunity rt/soo
  64                         route-map test permit 10
  65                          set extcommunity rt ${ASN}:1
  66                          set extcommunity soo ${ASN}:2
  67                          set community ${ASN}:1
  68                         line vty
  69                         !
  70                         end
  71                 EOF
  72                 chown ${CHOWNSTR} "$CONF"
  73         fi
  74         # You may want to automatically add configure a local address
  75         # on a loop interface.
  76         #
  77         # Solaris: ifconfig vni${H} plumb ${ADDR}/${ADDRPLEN} up
  78         # Linux:   ip address add ${ADDR}/${ADDRPLEN} dev lo 2> /dev/null
  79         ${BGPD} -i "${PIDBASE}"/bgpd${H}.pid \
  80                 -l ${ADDR} \
  81                 -f "${CONF}" \
  82                 -P $((${VTYBASE}+${H})) \
  83                 -d
  84 done