From: Steven Weber (itweber@xxxxxxxxxxx)
Date: Sun Feb 18 2001 - 10:51:04 GMT-3
If I'm not mistaken, before 12.0 if you didn't want a certain EIGRP network
advertised you had to use the passive-interface command, now you can use a
wildcard mask instead.Correct me if I'm wrong.
Steve
Rick Burts wrote:
> Dan
>
> Yes EIGRP is a (mostly) classless protocol but it does occassionally
> show its classful background (default automatic summarization at
> network boundaries is one such aspect and the classful network in the
> network statement is another).
>
> Prior to release 12.0 EIGRP did not support a mask in the network
> statement. In some releases of 12.0 EIGRP does now support masks in
> the network statement. The mask is an option, the default continues
> to assume a classful network. The mask can be very handy and gives
> you some capability closer to what OSPF has done, especially in
> situations where you may want to include only certain interfaces/subnets
> of a network.
>
> Rick
>
> Rick Burts, CCSI CCIE 4615 burts@mentortech.com
> Mentor Technologies 240-568-6500 ext 6652
> 133 National Business Parkway 240-568-6515 fax
> Annapolis Junction, Md 20701
>
> Chesapeake Network Solutions has now become Mentor Technologies.
> Mentor Technologies is a certified Cisco Training Partner and also
> a Cisco Professional Services partner.
> We offer most of the Cisco training courses.
> We also offer training in Checkpoint Firewall software and
> Fore Systems (now Marconi) and MicroMuse.
> We also provide network consulting services including
> design, management, and problem solving.
> We have 22 CCIEs on our staff.
> We offer the breakthrough VLAB remote access technology for
> access to pratice configuration on real equipment.
>
> On Sat, 17 Feb 2001, Dan wrote:
>
> > I have noticed that in most cases EIGRP will not let me enter a wild =
> > card mask after the network "x.x.x.x" statement.
> > But I remember in the past that I have been able to do this. I'm a bit =
> > confused by this.
> > EIGRP is supposed to be a classless protocol, but after entering all my =
> > subnets under the EIGRP process, I see that it's summarizing them at the =
> > classful boundary, even though I have disabled automatic summarization. =
> >
> > Why does this happen and am I correct that it sometimes let's you add a =
> > wildcard mask like OSPF does?
> >
> >
> > Dan Pontrelli
> > Customer Installation Engineer - Verio NYC
> > CCNP, MCSE, CNA
> >
> >
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