How about some compression, like run-length-encoding instead of peer groups to 
reduce the firehose?
A bunch of peers being sent nearly the same updates should compress very nicely
and you wouldn't get all the confusion that comes with peer-groups.

Thanks,
Jakob.


> -----Original Message-----
> From: Tim Evens (tievens)
> Sent: Tuesday, July 11, 2017 5:58 PM
> To: Jeffrey Haas <jh...@pfrc.org>; Jakob Heitz (jheitz) <jhe...@cisco.com>
> Cc: grow@ietf.org
> Subject: Re: [GROW] Peer-groups in BMP adj-rib-out (was Re: I-D Action: 
> draft-ietf-grow-bmp-adj-rib-out-00.txt)
> 
> Jeff,
> 
> On 7/11/17, 5:20 PM, "GROW on behalf of Jeffrey Haas" <grow-boun...@ietf.org 
> on behalf of jh...@pfrc.org> wrote:
> 
> 
>     In such cases - use the per peer rib-out.  I do believe it has good use
>     cases.  However, discussions with our customers have suggested that in 
> most
>     cases it's excessively chatty and threatens to swamp the rib-in portion of
>     the control channel they're actually interested in.  For them, a general
>     indication of rib-out content is sufficient, even when there's some minor
>     variations with specifications they may be comfortable with.
> 
> [TE] IMO, limitations around transmission of X number of peers with *-rib-* 
> monitoring should be BMP
>  sender implementation specific.  I do not believe anyone in their right mind 
> would configure a platform/sender
> for *-rib-* on all peers, but you never know. This is why limits should 
> exist, a line in the sand,
> for the platform.   Limits that apply to one platform are not necessarily 
> required to be applied to another.
> We want to enable the ability to monitor the five collection points of BGP 
> (Adj-RIB-In/pre, Adj-RIB-In/post,
> Adj-RIB-Out/pre, Adj-RIB-Out/post, and Loc-RIB) but this doesn't mean the 
> platform can't restrict combinations.
> 
>     I'm also open to alternative encodings that permit better clustering of 
> the
>     messages to avoid redundant noise.
> 
> [TE] YES, PEER UP INFO "peer/update group" TLV with engineered deployment 
> will do.  I can't imagine any sizable
> network
> that has been configured without design/engineering.  I do not believe or 
> suggest that is different with
> BGP monitoring.  BGP is big data, like IPFIX in that sense, and therefore 
> should get some engineering love,
> not willy-nilly turn it on everywhere and hope for the best.
> 
> 
> --Tim

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