On Fri, 23 Jan 2009, Phil Mayers wrote:
If RIB and FIB differ and by that forwarding isn't done along the
paths the protocols selected it is a bug. Either there's a
'fail-over' mode into software when TCAM is full - which is what
documentation and error message say - or there isn't.
I can't speak for the 6500 BU, but they've told me in the past:
"If it isn't supported in hardware, it's not supported."
"supported" and "intended to work" can be two different things.
I suspect the software forwarding path is simply not supported on a 6500.
I think it's "supposed to work" at least for IPv4, but my understanding
has been that on any platform, MPLS/tag-switching absolutely requires CEF,
which on the 6500 I suspect means hardware forwarding.
I do not think your expectations match the intent of the 6500 BU, based on
what I've been told in the past.
As has been said before...it's unfortunate cisco decided not to do a
Sup32-3bxl. It renders the Sup32 unsuitable for use in networks where a
Sup2 doesn't cut it, but Sup720-3bxl is overkill.
----------------------------------------------------------------------
Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
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