Re: [ILUG] [OT] Cisco router ip question

From: Colm Buckley (colm at domain tuatha.org)
Date: Thu 24 Feb 2000 - 11:47:35 GMT

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Roy White wrote:

> Sorry for the OT question, but I was wondering how to specify a CIDR
> network of 16 address in an access-list

access-list 111 permit ip aaa.bbb.ccc.80 0.0.0.15 any

Cisco "wildcard bits" are the inverse of the standard netmask. Subtract
each component of the normal netmask from 255 to get the cicso wildcard
syntax.

I also recommend the "netmask" program (supplied with Debian; dunno
about other dists) which does handy conversion between lots of different
net specifications.

Colm

-- 
Colm Buckley B.A. B.F.       # colm at domain tuatha.org # +353 87 2469146
http://www.tuatha.org/~colm/ # whois cb3765
Change is inevitable...  except from vending machines.

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