[f-nsp] BigIron 4k with JetCore

[Brendan Mannella]

Hello, 

I am running into a issue with my BI4k CPU spiking and hold timers expiring on my BGP sessions with the border routers. My network consists of 2 Juniper M7i's acting as border routers, each with a transit attached and receiving full routes. Both M7is are connected to the BI4k and run IBGP. Then i have a 16 port copper gige blade, also JetCore. All of my top of rack switches connect to the 16 port card. The top of rack switches are just L2 with tagged uplink ports. Now each customer gets there own VLAN and /29 or larger block. So i have a bunch of ve's so the BI4k acts as the default gateway for the customers ip blocks. My normal traffic aggregate traffic is about 50 meg or so max, but last night i have a 50 meg traffic spike and exactly at that time i lost my session between the M7i and the BI4k. 

I have no idea what limitation i am hitting, but this box should be good for much more than this. 

The local Foundry SE says i should spread my uplink ports from my L2 switches across the 16 port blade. He seems to think because i have all 5 switches plugged right next to each other that i am exhausting CAM resources of the card. The card has 4 ground of 4 ports, he wants me to plug one uplink per group of 4. But i cant believe thats all this card can take. 

Can anyone shed any light on this? 

Thanks, 

Brendan 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/foundry-nsp/attachments/20080713/659c2f50/attachment.html>