Ian Cox wrote:
Julio Arruda wrote:
I was under impression the L3 forwarding and the L2 forwarding was done
by the same engine, in the PFC card(s) ? and behind it, the EARL for the
lookup and the rewriting of the header info (mac rewrite, dec ttl and
goes on) ?
PFC/DFC - is the customer facing name for the L2 and L3/L4 forwarding
engines on the 6500.
EARL x - is the internal name used to refer to the L2 and L3/L4
forwarding engine, x being the generation of the forwarding engine. EARL
generation and PFC/DFC versions do not directly match, but map as follows
EARL PFC/DFC
5 PFC Supervisor 1A
6 PFC2 / DFC Supervisor 2
7 PFC3 / DFC3 Supervisor 720
Depending upon the features and the availability of particular ASIC
processes the forwarding engine has ranged from four ASICs to a single
ASIC. The exact number varies from generation to generation, and even
within revisions within a generation.
And I understand Nexus is the EARL8, correct ?
And this would also mean the 3B, 3C and the XLs are all EARL7, but with
distinct sizes for the TCAMs tied to them ?
There is any document on Cisco website with this level of detail, and
the other less 'obvious' cards, like the ES20 and the others ?
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