[c-nsp] ASR-100x intro

Nick Hilliard nick at foobar.org
Fri Feb 8 13:59:27 EST 2013

On 08/02/2013 17:27, Mack McBride wrote:
> It seems they could get handled in software but the ESP is basically
> software anyway.

packet destination lookup is handled in TCAM on the asr1k.  The amount of
TCAM is listed on page 11 of:

> http://www.cisco.com/en/US/prod/collateral/routers/ps9343/data_sheet_c78-450070.pdf

The TCAM size is measured in megs rather than prefixes, as this is a more
natural way of handling it.  You're right that it's opaque though - the
figures for ipv4 are the same as for ipv6 for the ESP40/ESP40/ESP100, and
only 2x for the ESP20.  It would be very interesting if Cisco could provide
some details on how TCAM carving is handled on these boxes.


Archive ref: "Cisco ASR 1000 Series Embedded Services Processors" data
sheet, docid: C78-450070-26

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