On Mon, 24 Jan 2000 10:06:01 -0500 (EST)
Tony Tauber <ttauber@bbnplanet.com> wrote:
> The other problem we've seen is input ignores when SRAM on
> the VIPs isn't that high (2MB) and there's lots of traffic
> bound for one or two busy output pipes (like the normal aggregation
> box) with high numbers of input interfaces (like a box loaded with
> CT3s). Due to the way the buffers are carved, any given channel on
> the CT3 gets not too much memory.
> Watch out for VIP2-40s (can't carry more than 2MB) or cards
> based on them like the CT3IP (vs. PA-MC-T3 with a VIP2-50).
> Looks like upping the SRAM to 4 or 8MB works much better.
We've seen that on ATM PA-A3's with lots of sub interfaces,
the solution was to lower the MTU. Although remember not
to change the MTU on a live box.
Regards,
Neil.
-- Neil J. McRae C O L T I N T E R N E T neil@COLT.NET
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