Explain the glean to me again?
Sorry..I'm overloaded but trying to catch up on the thread.
We, I need to go back and check, implemented periodic punts at one point
that would match the glean and all subsequent packets were dropped in
hw/under interrupt..it wasn't a 1:1 punt.
Rodney
On 3/24/10 10:17 AM, Gert Doering wrote:
Hi,
On Wed, Mar 24, 2010 at 09:35:51AM +0000, Dobbins, Roland wrote:
On Mar 24, 2010, at 4:28 PM, Gert Doering wrote:
(So in general, I agree with you, I just want a more fool-proof way to
configure CoPP-drop-default in a way that has no surprising side-effects)
I proposed a self-learning mode for CoPP, based upon identifying
'to-me' traffic via the NetFlow cache, many years ago. Unfortunately,
it wasn't ever taken up, AFAIK.
That would be nice to figure out what needs to be permitted (and how much
of it), but it's actually much more than I want.
We know our network quite well, so we know what sort of traffic to expect.
The "but" is in the fine print - ISIS, IPv6, ARP - either not (properly)
supported in 6500 CoPP, or having side-effects (glean traffic). Even
though the problem with the glean traffic something we haven't seen here
yet - maybe our 3Bs are not old enough :-)
gert
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