Peering issue - Possible Juniper to Cisco issue
To all, I (ASR1001) had an experience recently where the Telco (Juniper) told me that I was sending them 1000+ routes when I attempted to re-establish a BGP session; subsequently they would not allow this and they refused the session. I had no sync on and a prefix list so I was advertising only one route. Even though I hard reset the session on my end the Telco for some reason kept seeing me send the routes. I finally called them and had them reset their end and the session came up right away. What the ... thx Philip
On Fri Feb 28, 2014 at 08:58:02AM -0800, Philip Lavine wrote:
I had no sync on and a prefix list so I was advertising only one route. Even though I hard reset the session on my end the Telco for some reason kept seeing me send the routes. I finally called them and had them reset their end and the session came up right away.
This sounds like you tripped a Max-Prefix limit by advertising too many prefixes at some point (maybe when you first configured the session, when it's easy for the session to come up before you've configured the prefix list). Once you've tripped Max-Prefix, you won't be able to establish a new connection to them until they reset their end. Simon
On Fri, Feb 28, 2014 at 8:58 AM, Philip Lavine <source_route@yahoo.com> wrote:
To all,
I (ASR1001) had an experience recently where the Telco (Juniper) told me that I was sending them 1000+ routes when I attempted to re-establish a BGP session; subsequently they would not allow this and they refused the session.
I had no sync on and a prefix list so I was advertising only one route. Even though I hard reset the session on my end the Telco for some reason kept seeing me send the routes. I finally called them and had them reset their end and the session came up right away.
What the ...
If you leaked once and they have a teardown setup on the Juniper end w/o a timeout, it won't let the neighbor reconnect until the session is cleared. I've seen in IOS 15.x just a few days ago where it had stuck advertising routes that it shouldn't be, though that was between two Sup720 based pieces of gear, so probably unrelated (just a data point that it can/does happen in IOS in general where it's advertising routes that it insists it isn't)
thx
Philip
-- "Genius might be described as a supreme capacity for getting its possessors into trouble of all kinds." -- Samuel Butler
participants (3)
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Michael Loftis -
Philip Lavine -
Simon Lockhart