Circuit numbering scheme - best practice?

Alex H. Ryu r.hyunseog at
Fri Jan 16 23:32:22 UTC 2009

I think it is really depending on what kind of provisioning system you
Circuit ID is determined by your provisioning system for CLR/DLR reference.
As long as you can find circuit info quickly, it doesn't matter that much.


Jay Hennigan wrote:
> We've grown to the point that "The MCI T-1 in Ontario" or "Bob's
> ethernet to port 6/23 on switch 7" aren't scaling. Also in working
> with carriers we are frequently asked to provide our internal circuit
> number.
> I've seen a lot of the the LEC scheme NN-XXXX-NNNNNN where XXXX has
> some significance with regard to the speed and type of circuit. The
> leading NN seems to be a mystery and the trailing NNNNNN is a serial
> number.
> I've also seen DS1-NNNNNNN as a straight speed-serial number type of
> thing and horrendously long circuit numbers including CLLI codes such
> as 101/T3/SNLOCAGTH07/SNLOCA01K15 .
> Any suggestions from those who have been down this road as to a schema
> that makes sense and is scalable? Are there documented best practices?
> -- 
> Jay Hennigan - CCIE #7880 - Network Engineering - jay at
> Impulse Internet Service -
> Your local telephone and internet company - 805 884-6323 - WB6RDV

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