Re: Limit of numbers of BGP communities

[Jeroen Massar via Bird-users]

> On 12 Jul 2024, at 04:30, Ponikierski, Grzegorz via Bird-users 
> <bird-users@network.cz> wrote:
> 
> Hello all!
>  How many standard communities, extended communities and large communities, 
> user can apply on a route using Bird? BGP UPDATE message has finite size so I 
> guess that there must be a limit somewhere.

The limit is that ISPs are limiting it to a 100:

 https://bgpfilterguide.nlnog.net/guides/many_communities/

Above that, it will be emptied completely in many networks.

Greets,
 Jeroen