I mean in scenario where we have 2 Exits to O E1/E2 routes , OSPF will choose to Replace the Advertising Router Attribute to the highest Router-id Value between Both . in that case OSPF will route toward the one that is matched inside the Advertising router value, this can cause sometimes sub-optimal routing issue. If the Forwarding Address value is set than OSPF will route toward the Fa address field regardless of the one who did the T 7/5 Translation ensuring Optimal path selection.
what if this same route has been advertised but now with the Advertising router field set and the Fa field Set. and there is no Type 7/5 Translation since we Satisfied the below conditions for setting the FA to non-zero. the question is what will OSPF choose as a next hope to get this route installated in the RIB? Regards, Elie Raad | Network and Systems Administrator American University of Science and Technology [email protected]<mailto:[email protected]> | Office: +961-1-218716 Ext: 396 Office Hours: Mon- Fri 9:00 am-16:00 pm UTC+02:00 ________________________________ From: Marko Milivojevic [[email protected]] Sent: Tuesday, June 18, 2013 11:27 PM To: Elie Raad Cc: Saleh Batouq; OSL Routing and Switching Subject: Re: [OSL | CCIE_RS] OSPF Q What would OSPF use as next-hop where? -- Marko Milivojevic - CCIE #18427 (SP R&S) Senior CCIE Instructor / Managing Partner - IPexpert On Tue, Jun 18, 2013 at 11:09 AM, Elie Raad <[email protected]<mailto:[email protected]>> wrote: What will ospf use as a next hop , the advertising router ip address or the fa address Ignore any typos, sent from mobile device. On Jun 18, 2013, at 19:17, "Marko Milivojevic" <[email protected]<mailto:[email protected]>> wrote: Yes it is :-) On an ASBR that redistributes the route: 1) next-hop must be known by OSPF (enabled on the interface, or a more specific OSPF route to it) 2) exit interface for the next-hop must not be passive 3) exit interface must be broadcast or non-broadcast If those are satisfied, redistributed route will have non-zero FA and FA will be the next-hop of the redistributed route. -- Marko Milivojevic - CCIE #18427 (SP R&S) Senior CCIE Instructor / Managing Partner - IPexpert On Mon, Jun 17, 2013 at 11:13 PM, Saleh Batouq <[email protected]<mailto:[email protected]>> wrote: I would also like to know!!! Best Regards, Saleh On Tue, Jun 18, 2013 at 9:22 AM, Elie Raad <[email protected]<mailto:[email protected]>> wrote: > Hi Guys , > > is it possible to set the FA Address to non-zero for an O E1/E2 route? > > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com<http://www.ipexpert.com> > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com<http://www.PlatinumPlacement.com> > > http://onlinestudylist.com/mailman/listinfo/ccie_rs > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com<http://www.ipexpert.com> Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com<http://www.PlatinumPlacement.com> http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
