[quagga-dev 11570] Re: [PATCH] BGP: add aspath_aggregate_mpath that preserves path length
paul at jakma.org
Thu Oct 9 10:19:03 BST 2014
On Wed, 8 Oct 2014, Daniel Walton wrote:
> DW# The ID doesn't matter as long as it is unique...no ID coordination
> is required between two add-path capable speakers. The ID is just there
> to make a NLRI unique so that advertising an additional NLRI doesn't
> implicitly withdraw the previous advertisement.
Ah, indeed on the ID opaqueness thing. I must have been misremembering
The selection mechanism I think could have interoperability / routing
consistency issues I think. I'm curious why there isn't some capabilities
defined to explicitly signal which path-grouping selection mechanism is
Then, for BGP ECMP, what happens if a speaker wants to describe an ECMP
path to a non-Add-Path speaker?
> DW# Cisco has it in ios and ios-xr, not sure about nx-OS. Juniper has
> it. I've done RX support in quagga (will post the patch soon). TX
> support in quagga is on our todo list.
Ah, great! :)
> DW# addpath is pretty stable at this point, hopefully the next draft
> will be the last. It has been a very long process though, I submitted
> the first copy of the draft 12 years ago. I have the revised text, just
> need to sit down and submit it.
It has been a long path alright. :)
Paul Jakma paul at jakma.org @pjakma Key ID: 64A2FF6A
Two can Live as Cheaply as One for Half as Long.
-- Howard Kandel
More information about the Quagga-dev