From: David Vu (dd_vu@xxxxxxxxx)
Date: Tue Oct 30 2001 - 00:29:12 GMT-3
Can you even do it with 3
access-list 1 deny 158.168.94.0 0.0.0.255
access-list 1 permit 158.168.0.0 0.0.62.255
access-list 1 permit 158.168.64.0 0.0.30.255
Since it is implicit deny, you would not need the last statement, right?
At 10:08 PM 10/29/2001 -0500, Jason Gardiner wrote:
>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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