[f-nsp] show ip[v6] bgp ?

[Jon Lewis]

On Mon, 11 Nov 2013, Steven Raymond wrote:

>
> On Nov 11, 2013, at 7:54 AM, Jon Lewis wrote:
>
>> "Route is advertised to X peers:" is pretty clear in what it means.
>>
>> "Route is to be sent to Y peers:" I can't find any documentation saying what this means...and I'm curious, what does this mean?
>
> My observation with this output seems to mean that it will send the 
> route to the peer, after the peer is brought up.  Basically a configured 
> but currently-down peer will get sent this route.

That was my first guess...but it doesn't seem to be the case.  These peers 
are established and have been for some time.

>> The above mentioned bug was that an ipv6 route for which there was a 
>> network statement and static route to null0, the show ipv6 bgp route 
>> detail output said that the route was being advertised to a subset of 
>> the peers the config should have caused it to be sent to.  Those peers 
>> were not actually receiving the route.  Removing and re-adding the 
>> static route to null0 caused the route to be advertised to (and 
>> received by) all the peers that should have been getting it. This was 
>> seen on an XMR-16 that had been upgraded from 5.2.0 to 5.4.0 just a 
>> week or so prior.
>
> Am pretty sure I have seen limited similar flakiness with new/readded 
> statics getting advertised properly with 5.4.0c, but believe it was 
> IPv4.  Are they members of a peer-group?  I found that you have to go 
> both "peer-group blah activate" and "neighbor <ipv6> activate" or it 
> wouldn't send any routes, period (the neighbor was establishing just 
> fine).  Same wasn't true for IPv4 peer-group members.

The peers in question are members of peer-groups.  My experience with peer 
groups has been that if you configure route-maps (or probably any other 
options) for the peer-group, then it's necessary to activate the 
peer-group in the address-family, or your route-maps (or other options) 
are not applied to members of the peer group in that address-family. 
Individual members can be activated, but activating the peer-group appears 
to be sufficient.  i.e. a member of an activated peer-group does not have 
to be individually activated in order for routes to be exchanged.

----------------------------------------------------------------------
  Jon Lewis, MCP :)           |  I route
                              |  therefore you are
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