The problem with peer-groups is that today's high end routers
don't generate updates to peer-groups.
Peer-groups are only a convenience for configuration.
High end routers group peers automatically into update groups
and generate updates to the update group.
Even update groups have sub divisions to which the generated updates
may or may not be copied to.
This is done for efficient update generation with thousands of peers.

Thanks,
Jakob.


> -----Original Message-----
> From: GROW [mailto:[email protected]] On Behalf Of Gert Doering
> Sent: Thursday, July 13, 2017 1:02 AM
> To: Tim Evens (tievens) <[email protected]>
> Cc: [email protected]
> Subject: Re: [GROW] Peer-groups in BMP adj-rib-out (was Re: I-D Action: 
> draft-ietf-grow-bmp-adj-rib-out-00.txt)
> 
> Hi,
> 
> On Wed, Jul 12, 2017 at 12:28:55AM +0000, Tim Evens (tievens) wrote:
> > Noisy and likely duplicate/wasteful, yes??? if one configures every peer to 
> > send Adj-RIB-Out
> > for peers that convey the same data, to which is likely not what folks will 
> > do or what I would
> > recommend doing.
> 
> The use case I have is "I want to see how routes from customer <x> end
> up being sent to DECIX" - which technically is a peer-group with 100+
> peers in.
> 
> Monitoring a given peer is not really useful here (that peer could be
> down) - monitoring *all* peers will give way more data than I want (I can
> collapse it again afterwards, but why eat up CPU etc. for no benefit).
> 
> So "peer group" is exactly matching my use case.
> 
> Gert Doering
>         -- NetMaster
> --
> have you enabled IPv6 on something today...?
> 
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