From: Jason Gardiner (gardiner@xxxxxxxxxx)
Date: Tue Oct 30 2001 - 00:08:34 GMT-3
Hmmm....
access-list 1 deny 158.168.94.0 0.0.0.255
access-list 1 permit 158.168.0.0 0.0.63.255
access-list 1 permit 158.168.64.0 0.0.31.255
access-list 1 deny 158.168.1.0 0.0.254.255
Thanks,
Jason Gardiner
Supervisor, Engineering Services
Sprint <Insert Division Name>
"You can swim all day in the Sea of Knowledge and
still come out completely dry. Most people do."
- Norton Juster
On Tue, 30 Oct 2001, Albert Lu wrote:
> You mean:
>
> access-list 1 permit 158.168.0.0 0.0.63.255
> access-list 1 permit 158.168.64.0 0.0.15.255
> access-list 1 permit 158.168.80.0 0.0.7.255
> access-list 1 permit 158.168.88.0 0.0.3.255
> access-list 1 permit 158.168.92.0 0.0.0.0
> access-list 1 deny 158.168.1.0 0.0.254.255
>
> Hmm... 6 lines. Anyone knows a shorter way?
>
> Albert
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Brian Hescock
> Sent: Tuesday, October 30, 2001 1:02 PM
> To: Andy Cuberly
> Cc: 'Cliff Ward'; ccielab@groupstudy.com
> Subject: Re: Redistributing only even subnets.
>
>
> These are the kinds of things everyone needs to watch out for, easy
> points missed. Because the requirement said even networks up through
> 92.0, not 254.0. So what you really need is five line:
>
> even networks been 0-63, 64-79, 80-87, 88-91, and 92
>
> Brian
>
>
>
> Andy Cuberly wrote:
>
> >An access list with the following commands would filter out ALL odd
> >networks.
> >
> >Access-list 1 deny 158.168.1.0 0.0.254.255
> >Access-list 1 permit any
> >
> >Andy
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> >Cliff Ward
> >Sent: Monday, October 29, 2001 4:40 PM
> >To: ccielab@groupstudy.com
> >Subject: Redistributing only even subnets.
> >
> >
> >An interesting issue has arisen.
> >
> >I'm running OSPF to EIGRP redistribution and want to advertise a group of
> >class B subnets. 158.168.1.0 through 158.168.92.0. However odd number
> >subnets
> >need not be advertised. EG. Advertise 158.168.2.0 and 158.168.4.0
> through...
> >but not 158.168.3.0 or 158.168.5.0 etc, etc.
> >
> >I've been playing with a series of access lists and route maps but is there
> >an
> >easy way to do it with minimal commands? It seems to me that the last bit
> in
> >the third octet is the discriminator between odd and even but I can't seem
> >to
> >get this to translate to an access-list which works with redistribution.
> >
> >Thanks,
> >Cliff.
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