07-06-2018 10:37 PM - edited 03-05-2019 10:44 AM
Hi ALL,
Facing eBGP issue, Need your support to configure eBGP configuration using loopback.
Kindly refer attached document.
Thanks in advance.
07-07-2018 12:57 AM
Hello,
you need to configure all your neighbors on all routers with 'ebgp-multihop 2', such as on R2 below:
router bgp 200
no synchronization
bgp router-id 11.0.0.1
bgp log-neighbor-changes
network 1.1.1.0 mask 255.255.255.0
network 2.2.2.0 mask 255.255.255.0
network 11.0.0.1 mask 255.255.255.255
neighbor 10.0.0.1 remote-as 100
neighbor 10.0.0.1 update-source Loopback0
neighbor 10.0.0.1 ebgp-multihop 2
neighbor 10.0.0.1 next-hop-self
neighbor 12.0.0.1 remote-as 300
neighbor 12.0.0.1 update-source Loopback0
neighbor 12.0.0.1 ebgp-multihop 2
neighbor 12.0.0.1 next-hop-self
neighbor 13.0.0.1 remote-as 400
neighbor 13.0.0.1 update-source Loopback0
neighbor 13.0.0.1 ebgp-multihop 2
neighbor 13.0.0.1 next-hop-self
no auto-summary
07-09-2018 05:59 AM
Hi Georg,
Thanks for prompt support.eBGP neighbor ship is established but facing below error.Neighbor ship is getting flapped .
R1#
Mar 1 00:21:53.539: %BGP-5-ADJCHANGE: neighbor 11.0.0.1 Down BGP Notification sent
R1#
*Mar 1 00:21:53.539: %BGP-3-NOTIFICATION: sent to neighbor 11.0.0.1 4/0 (hold time expired) 0 bytes
Also refer attached wireshark file.
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