[c-nsp] Monitoring flows on Cat6500

[ken lindahl]

At 08:08 AM 11/30/2004, Piltrafilla wrote:
>Is it possible to browse flows information using netflow accounting on
>a Cat6k with Sup1A acting as a pure l2 switch? or is it necessary a
>layer3 module such as MSFC in order to browse either export that
>information?

flow records can be exported from an L2-only cat6k, see the section
"Configuring NDE" in configuration guide for your version of catOS.
here's a url for v6.4 (pretty old, but that's what i've got in my
bookmarks file):

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008007fb11.html

netflow on these boxes uses a 32K cache, which can be a bit small
for some situations. it was too small for us, and dropped a lot of
records (note: the packets aren't dropped, just the flow records).

ken