While debugging with 'dm' and 'hw' commands (TAC looked at it too), it
turned out that the hardware was simply dropping packets internally. And
the more BGP peers and prefixes were added (AMS-IX based router), the
faster packets would get dropped in hardware.
No idea what the actual technical explanation was for it, but in the end
we pulled the BI's from doing BGP and installed XMR's for routing (i)BGP
tables. (which was a relief to say the least :-)
For basic L3 and L2, the Jetcores perform just great, just don't stress
them out too much, because they start acting up from my experience.
On 4/7/10 10:36 AM, Clement Cavadore wrote:
Hi,
Strange issue.
I have been using a couple of BI4k Jetcore for years, with B2x10G,
BGP/OSPF, untill exhaustion of the machines: 16 Gbit/s of UDP audio
streams.
The limiting stuff was the 8Ge backplane per card (servers on a J-B16GC,
intercos on 10G upstreams).
Regards,
Clément
On Wed, 2010-04-07 at 09:20 +0200, Jeroen Wunnink wrote:
Sure, the BI will run several full tables with no problem.
But the problem I (and a customer recently with his own BI) ran into,
aside from a very small CAM table running full very quickly, was
unexplainable packetloss at 200Mbit+ traffic levels.
It was a very minor amount of loss (0.1% to 0.5%), but noticable
enough to make it unusable for UDP audio streams.
And I've seen this only on BI's doing BGP, I have several BI's doing
basic L3 (gateway for vlans, ospf, etc) with no problems.
So if you can avoid it, don't use the Jetcores for BGP related work.
On 4/6/10 6:30 PM, Chuck Ufarley wrote:
Hi all--
I'm trying to figure out if I can run 500k - 600k routes of a full
BGP table on a standard J-BxGMR4 (512MB) with a BigIron 4000
chassis. At this point I'm thinking no, but is anyone running
anything like it?
And looking at Foundry/Brocade's site doesn't give me much
information, but does anyone have the specs on how much traffic a
B4000 can handle at one time?
Any direction on how to find this info without bothering you again
would be great, too. Sorry to be a bother.
And thanks!
--Chuck
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[email protected]
telefoon:+31 (035) 6285455 Postbus 48
fax: +31 (035) 6838242 3755 ZG Eemnes
http://www.easyhosting.nl
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