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iBGP, next-hop inaccessible, no routes installed.

Hi,

Trying to set up a new border gateway but the iBGP routes are not being installed and next hop is inaccessible. I use loopback interfaces and update-source. Am I missing something obvious?

Router 1 is ISR 2821, 12.4

Router 2 is 7301, 12.3

### gets all prefixes, not installed in routing table. next-hop is inaccessible.

rtr2#show ip bgp 8.8.8.8

BGP routing table entry for 8.8.8.0/24, version 0

Paths: (1 available, no best path)

  Not advertised to any peer

  33885 15169

    84.246.88.35 (inaccessible) from 100.100.0.1 (195.67.149.10)

      Origin IGP, metric 10, localpref 80, valid, internal

## No bgp routes in table

rtr2#show ip route | inc B

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

rtr2#

## config router 1

100.100.0.2     4        39302      21   77340 291227447    0    0 00:17:30        0

interface Loopback0

ip address 100.100.0.1 255.255.255.255

!

!

interface GigabitEthernet0/0.27

description iBGP link

encapsulation dot1Q 27

ip address 10.255.255.1 255.255.255.0

no ip proxy-arp

!

router bgp 65535

bgp router-id 195.67.149.10

no bgp fast-external-fallover

no bgp default ipv4-unicast

bgp log-neighbor-changes

neighbor 100.100.0.2 remote-as 65535

neighbor 100.100.0.2 ebgp-multihop 2

neighbor 100.100.0.2 update-source Loopback0

!

  no synchronization

  network 100.100.0.0 mask 255.255.224.0

  neighbor 100.100.0.2 activate

  default-metric 1

  no auto-summary

exit-address-family

!

ip route 100.100.0.2 255.255.255.255 10.255.255.2

## config router 2

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

100.100.0.1    4 65535  154518      41   943080    0    0 00:16:57   469741

interface Loopback0

ip address 100.100.0.2 255.255.255.255

!

interface GigabitEthernet0/1.27

description iBGP link

encapsulation dot1Q 27

ip address 10.255.255.2 255.255.255.0

no ip proxy-arp

no snmp trap link-status

!

router bgp 65535

bgp router-id 100.100.0.2

no bgp fast-external-fallover

no bgp default ipv4-unicast

bgp log-neighbor-changes

neighbor 100.100.0.1 remote-as 65535

neighbor 100.100.0.1 description router01

neighbor 100.100.0.1 ebgp-multihop 2

neighbor 100.100.0.1 update-source Loopback0

!

address-family ipv4

neighbor 100.100.1 activate

no auto-summary

no synchronization

exit-address-family

!

ip route 212.112.0.1 255.255.255.255 10.255.255.1

1 ACCEPTED SOLUTION

Accepted Solutions
Purple

iBGP, next-hop inaccessible, no routes installed.

Hi,

on r1:

router bgp 65535

neighbor 100.100.0.2 next-hop-self

Regards

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
1 REPLY
Purple

iBGP, next-hop inaccessible, no routes installed.

Hi,

on r1:

router bgp 65535

neighbor 100.100.0.2 next-hop-self

Regards

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
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