On 05/02/14 11:47, Peter Rathlev wrote:
We've started seeing some problems with our netflow collection and
export from Sup2T's running 15.1(1)SY AIS.
That can't be. Sup2T has "operationally useful netflow". I read it
somewhere...
The problems started when we suddenly didn't see any flows exported from
the device in question. Trying to show the flow cache from CLI just
makes that VTY hang (can't be cleared):
This is interesting, because we've seen similar things on N7k M1
linecards, which are also EARL8 based, and I believe share HAL code with
Sup2T IOS, though obviously NX-OS is substantially different in other ways.
We're guessing a reload of the box would help (though the hanging VTY
lines may mean we have to cut power) but would like for this to not
happen again.
FWIW the last time this happened to us on an N7k/M1, a reload fixed it
and it did not recur.
(I'd be interested to know if your Netflow timestamps are wrong; that's
another N7k bug we're fighting at the moment)
What sort of numbers of flows?
We don't have any Sup2T in production so I can't offer platform-specific
suggestions. But it does seem the EARL8 Netflow is not as ready for
prime time as some people claim.
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