I would have still expected the highest interface i.e 145.x to be encoded as the FA vs a P2P serial interface going nowhere, is this being run on gns?
Have you filtered 145.x on R1 by any chance, do you have the type 1 for 145.x in the database -- BR Tony Sent from my iPad > On 3 Dec 2013, at 03:52, Hamed Shittu <[email protected]> wrote: > > All, > > Need some clarification, I made one of Marko's ospf articles into a bigger > ospf domain, and this question came up--not sure if there is an answer > already ... > > Question: who selects ip address to use as Forward (FW) address the ASBR ? > can this be influence manually... > > here is the link to the article : > http://blog.ipexpert.com/2010/09/27/quick-look-into-ospf-database-nssa-external-lsa/ > > before i added a router(r6) to R1 ( using Serial interface) this how the > external db looks like on R4: > > R4#sh ip os database nssa-external > > OSPF Router with ID (4.4.4.4) (Process ID 1) > > Type-7 AS External Link States (Area 145) > > LS age: 905 > Options: (No TOS-capability, Type 7/5 translation, DC) > LS Type: AS External Link > Link State ID: 11.11.11.11 (External Network Number ) > Advertising Router: 1.1.1.1 > LS Seq Number: 80000002 > Checksum: 0xBDF1 > Length: 36 > Network Mask: /32 > Metric Type: 2 (Larger than any link state path) > TOS: 0 > Metric: 20 > Forward Address: 145.145.145.1 > External Route Tag: 0 > > > > After adding R6 to R1.... here is the DB on R4: > > R4#sh ip os database nssa-external > > OSPF Router with ID (4.4.4.4) (Process ID 1) > > Type-7 AS External Link States (Area 145) > > LS age: 3 > Options: (No TOS-capability, Type 7/5 translation, DC) > LS Type: AS External Link > Link State ID: 11.11.11.11 (External Network Number ) > Advertising Router: 1.1.1.1 > LS Seq Number: 80000003 > Checksum: 0x85AD > Length: 36 > Network Mask: /32 > Metric Type: 2 (Larger than any link state path) > TOS: 0 > Metric: 20 > Forward Address: 16.16.16.1 > External Route Tag: 0 > > > the FW add changed on R4 when i brought a link ( serial on R1 connecting to > R6) > > configs: > > R4#sh run | s router > router ospf 1 > router-id 4.4.4.4 > log-adjacency-changes > area 145 nssa > network 4.4.4.4 0.0.0.0 area 0 > network 24.24.24.4 0.0.0.0 area 0 > network 45.45.45.4 0.0.0.0 area 0 > network 145.145.145.4 0.0.0.0 area 145 > > > R1#sh run | s router > router ospf 1 > router-id 1.1.1.1 > log-adjacency-changes > area 145 nssa > redistribute connected subnets route-map CON-to-OSPF > network 16.16.16.1 0.0.0.0 area 145 > network 145.145.145.1 0.0.0.0 area 145 > > > > ------------------------------------------------------------------------------ > This electronic mail (including any attachments) may contain information that > is privileged, confidential, and/or otherwise protected from disclosure to > anyone other than its intended recipient(s). Any dissemination or use of this > electronic email or its contents (including any attachments) by persons other > than the intended recipient(s) is strictly prohibited. If you have received > this message in error, please notify us immediately by reply email so that we > may correct our internal records. Please then delete the original message > (including any attachments) in its entirety. Thank you. > _______________________________________________ > Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: > > iPexpert on YouTube: www.youtube.com/ipexpertinc _______________________________________________ Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: iPexpert on YouTube: www.youtube.com/ipexpertinc
