ATM (was Re: too many routes)

Dorian R. Kim dorian at
Fri Sep 12 19:08:15 UTC 1997

On Fri, 12 Sep 1997, Michael Dillon wrote:

> > on aggregating up local
> >access lines into VC11/VC12, dropping that into a
> >POP-in-a-box at STM-16 and pulling out STM-16c to a big
> >crunchy IP router.
> I don't know everything. Sean will have to translate VC11 and VC12.

VC = Virtual Containers. Basically a way of repackaging, or adapting PDH
singls  to STM-1 frame. There a many different VCs, and I don't know
which ones 11 and 12 are without looking them up.

> Again, Sean will have to identify pst, but tli is Tony Li of Juniper

Pst is Paul Traina, formerly of Cisco and currently Juniper.

> >Oh that and helping beat on CEF/DFIB packet-by-packet load
> >balancing before my last retirement.
> Once again, I'm at a loss as ti what CEF/DFIB stands for.

Cisco Express Forwarding/Distributed Forwarding Information Base. Former
being another stupid marketing stunt while the latter being a more
descriptive name. Basically it builds a full forwarding table that's
downloaded to the individual linecards, freeing the RP to do what it's
supposed to do, i.e. route calculationgs, and freeing network operators
from the evils of cache.

Some of the neat things that comes with this trick are the per-packet load
balancing, per adjacency and per prefix accounting among others.


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