show ip bgp version recent # cli output understanding

[fsebera]

Looking for clarification and understanding of the cli command:  show ip bgp version recent #

Example:

show ip bgp sum | i table

BGP table version is 5000, main routing table version is 5000

show ip bgp

Several hundred prefixes are shown

show ip bgp version recent 1

2 prefixes are shown

sh ip bgp < 1-of-the 2-prefixes-from-above >

The table version on this prefix (5000) matches the BGP table version as-well-as main table version

Sh ip bgp < 1-of-the-prefix-found-in-the-several-hundred-prefix-list >

The table version on this prefix is a LOT lower (3442) than the BGP table version as-well-as main table version.

My assumption is the 2 prefixes from the sh ip bgp version recent 1 output are the only prefixes that have been updated since the last table version change.

Thanks

Frank

[Georg Pauwen · Accepted solution]

Hello,

indeed. The highest prefix table version is equal to the main BGP table version. If the prefix version for a specific prefix is that much lower than the BGP main table versions, it means that there are probably a lot of prefixes other than that specific one that have been updated.

Does that make sense ? Have a look at the document below for reference:

https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/116511-technote-tableversion-00.html

[fsebera]

Hi George,

Thank you

Frank