wj chou wrote:
> 
> do you guys know of any newer and good book talking about
> redistribution and default routes? thanks!


There's nothing wrong with the age of Doyle's Routing TCP/IP Volume I. The
poster who claimed that didn't know the difference between a second edition
and a second volume. Doyle published a second volume because he had more to
say (on BGP, IPv6, multicast). He didn't publish it because his first volume
was out-dated or wrong.

A second edition updates a book. A second volume supplements it. Doyle
hasn't published a second edition because there's no need for one yet. How
much have routing protocols changed in the last few years? Not much. Plus if
you can believe the errata at Cisco Press's site for Doyle Volume 1, there
were only 2 mistakes in the book!?

(I think that's a mistake, as in they forgot to publish the rest of the
pages. Although Doyle's book is terrific, I doubt that it really only has 2
mistakes? But maybe. Check with Cisco Press. See if you can get them to
publish a better errata....)

Anyway, I believe what you are questioning is this statement from Doyle,
volume 1:

"After a default route is identified in the routing table, RIP, EIGRP, IGRP
will automatically advertise it."

There's a good paper on redistribution at CertificationZone, written by a
frequent contributor to this list, John Neiberger, and Ron Trunk.

The paper agrees with Doyle:

"Handling of default routes varies from protocol to protocol. RIP, IGRP,
EIGRP and BGP automatically redistribute default routes while OSPF and IS-IS
require you to explicitly advertise them with the default-information
originate statement in your router configuration."

I suggest you send us your config. There's probably some weird wrinkle
related to network classes or something. You may want to start a new thread.
People that use the Web site don't look at messages that are this old
sometimes....

Priscilla







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