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Community Member

BGP router id change

Hi,

I would like to change the bgp router id on my router that dialogue with peers in other AS.

I will use the loopback interface 0 and I have a doubt about the ip address that I can use.

I think that can be a private address in a public addresses domain. Is it correct?

So, I think that it's better I'd implement the ebgp multihop command with the remote AS peers. Right?

Before I do these changes do I have to warn the other peers to permit to change their configuration?

1 REPLY
Silver

Re: BGP router id change

Hello,

Changing your router-id will be effective after you reset your connections.

You can use a RFC 1918 address to suit your needs. Be careful not to leak the address to the Internet.

If you use the Loopback interface as a update-source you need to use the ebgp-multihop command for reachability. If you are useing it for a router-id only you should not bother to change the TTL in BGP packets.

It is recommended that you inform your peers about your plans.

HTH

Leon

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