Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

Can 32-bit ASN be dangerous/tricky in any way? We are currently implanting BGP in our network. One of the uplinks has emphasized that their ASN is 32-bit. Ours is 32-bits as well. What is it I should be paying attention to when dealing with 32-bit ASNs? I've already checked that our router's software supports it. Is there anything else to be checked?

share|improve this question

1 Answer 1

up vote 4 down vote accepted

32-bit ASNs are backwards compatible with 16-bit ASNs, and if you have a proper BGP implementation on your router 32-bit ASNs will be transported silently across your network. So 16-bit ASN routers do work with 32-bit routers and vice versa.

Where this would be tricky is a good question actually, since most of BGP just forwards stuff if there are new flags etc. that were introduced. The obvious issue would be broken implementations or non-standards behavior.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.