To be fair, I just checked, and Doyle didn't say anthing about redistribution.
The example simply shows configuring ip route 0.0.0.0 0.0.0.0 192.168.1.82 The text says that the router that has that config (which is running RIP by the way) advertises the default to other RIP routers. It goes on to say: "After a default route is identified in the routing table, RIP, EIGRP, IGRP will automatically advertise it." That's right, isn't it? If it were OSPF you would need redistribution, but not for those others? That was the original question. Sorry I confused it with the statement from CertZone, which really meant to cover a different situation. :-) Thanks, Priscilla John Neiberger wrote: > > >>>> Zsombor Papp 7/16/03 3:42:18 PM >>> > >>I looked at that page in Doyle's book and I thought it's just > a simple > >>mistake, or maybe IOS changed since he wrote that, but after > reading > this: > >> > >>>"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 start to think that these folks (Doyle included) have some > basic problem > > >>with simple terminology. > > > >Actually this terminology might not be that simple after all, > as it is not > > >clear whether something was redistributed unless it is > advertised to peers. > > >So revised statement below. > > > >Also, I just realized that my above sentence sounds less > respectful than I > > >intended, so I thought I would mention that I learnt a lot > from "Routing > >TCP/IP" and it's probably the most useful networking book I've > ever read. > > > >> There is no way "BGP automatically redistributes default > routes". > >> However it's true that OSPF and ISIS don't advertise the > default route > >> even if it's redistributed into them, unless > 'default-information > >> originate' is specified. > >> > >>So the statement should be something like "RIP, IGRP, EIGRP > and BGP > >>automatically advertise default routes that are redistributed > into them, > >>while OSPF and ISIS require the 'default-information > originate' > >>statement." At least I hope that this is a true statement... > :) > > > >Probably this one is better: > > > >"RIP, IGRP, EIGRP and BGP automatically accept default routes > that are > >redistributed into them, while OSPF and ISIS silently reject > the > >redistributed default route unless 'default-information > originate' is > >configured." > > > >Thanks, > > > >Zsombor > > Actually, I think I wrote that line and it is a little > confusing, perhaps. I > took great care to be specific with my terminology but it's > easy to slip > back into bad habits from time to time. Many people use terms > in a haphazard > way (like redistribute, advertise, originate, export, import, > accept) > without fully considering the implications of using one term > over another. > With Howard's approval perhaps we should have CZ update that > line with your > edited version! I like your version better, anyway. :-) > > Thanks, > John > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=72436&t=72211 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
