Delete all BGP communities except

[Brooks Swinnerton]

Hi Alexander,

Yes, I think the example code that I shared would be present in a filter
function. Specifically the question is with respect to filtering out all
BGP communities *except* one that starts with a given value.

On Thu, Oct 29, 2020 at 11:35 AM Alexander Zubkov <green at qrator.net> wrote:

> Hello,
>
> Take a look at the "filter" function. I think it is what you want.
>
> On Thu, Oct 29, 2020 at 3:26 PM Brooks Swinnerton <bswinnerton at gmail.com>
> wrote:
> >
> > Hello,
> >
> > Is it possible to delete all BGP communities from prefixes learned from
> a specific BGP session except ones that start with a given value? For
> example something like:
> >
> > if (bgp_path ~ 64496) then {
> >   bgp_large_community.delete([(!64496, *, *)]);
> > }
> >
> > I haven't tested this syntax, but I can't imagine it would work. I'm
> mostly curious if there's a concept of "except" when deleting BGP
> communities.
>
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