[nsp] IOS switching-path selection

From: Martin Cooper (mjc@cooper.org.uk)
Date: Tue Nov 14 2000 - 07:36:03 EST


Does anyone have any experience they could share about
which IOS switching-paths are selected in the presence
of unusual router configurations on the Cat5K RSM/RSFC
and/or the 7500 series RSP/line-cards. I am thinking
specifically of:

* Packets routed via Loopback interfaces used as
  GRE tunnel source and/or destination interfaces.
* Packets routed back out of the same interface
  they were received on when CEF and/or Netflow
  are configured on the interface but 'ip route
  -cache same-interface' is not.
* Packets received on an interface configured
  with CEF, Netflow, and inbound/outbound IP
  access-lists.
* Packets routed to the Null interface with a
  static route when CEF is enabled on the RSP.
* Packets routed to a Loopback interface with
  a static route when CEF and/or Netflow are
  configured on the interface.

Thanks,

M.



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