Oh, yeah, there ya go... It's the little details, right? You could, however, use the other hidden command "bgp bestpath as-path ignore" to allow multipath over your topology with differing AS_PATH lengths.
On Thu, Mar 15, 2012 at 10:37 AM, Neil O'Brien <[email protected]> wrote: > Actually guys - my apologies. > > I've just realised the AS Paths still need to be the same length. The > aspath-relax command is just used when the paths are not identical. > > Thanks, > Neil > > > > On 15 March 2012 14:14, Neil O'Brien <[email protected]> wrote: > >> Should have mentioned I have that configured as well. >> >> IOS: c3640-js-mz.124-25d >> >> R1#sh run | se bgp >> router bgp 5500 >> no synchronization >> bgp log-neighbor-changes >> bgp bestpath as-path multipath-relax >> redistribute connected route-map REDIST >> neighbor 2.2.2.2 remote-as 5500 >> neighbor 2.2.2.2 update-source Loopback0 >> neighbor 3.3.3.3 remote-as 5500 >> neighbor 3.3.3.3 update-source Loopback0 >> maximum-paths ibgp 2 >> no auto-summary >> R1# >> >> R1#sh ip bgp 101.0.0.1 >> BGP routing table entry for 101.0.0.1/32, version 5 >> Paths: (2 available, best #2, table Default-IP-Routing-Table) >> Multipath: iBGP >> Flag: 0x820 >> Not advertised to any peer >> 777 911 711 >> 2.2.2.2 (metric 65) from 2.2.2.2 (2.2.2.2) >> Origin incomplete, metric 0, localpref 100, valid, internal >> 777 711 >> 3.3.3.3 (metric 65) from 3.3.3.3 (3.3.3.3) >> Origin incomplete, metric 0, localpref 100, valid, internal, best >> R1# >> >> R1#sh ip route 101.0.0.1 >> Routing entry for 101.0.0.1/32 >> Known via "bgp 5500", distance 200, metric 0 >> Tag 777, type internal >> Last update from 3.3.3.3 00:00:35 ago >> Routing Descriptor Blocks: >> * 3.3.3.3, from 3.3.3.3, 00:00:35 ago >> Route metric is 0, traffic share count is 1 >> AS Hops 2 >> Route tag 777 >> >> R1# >> >> On 15 March 2012 13:52, Bob McCouch <[email protected]> wrote: >> >>> And you have 'maximum-paths ibgp <number>' (remembering the IBGP >>> keyword)? >>> >>> I didn't know about that hidden multipath-relax command. Thanks for that. >>> >>> On Thu, Mar 15, 2012 at 9:17 AM, Neil O'Brien <[email protected]> wrote: >>> >>>> Hey Guys, >>>> >>>> Just wondering if anyone has had any trouble getting iBGP Multipath to >>>> work >>>> in GNS3. I'm using "bgp bestpath as-path multipath-relax" but can't >>>> seem >>>> to get it to work. My iBGP router still see's both paths but only >>>> installs one next hop into routing table. All metrics except as-path >>>> are >>>> the same. >>>> >>>> It's just a quick question, if people have it working then I'm missing >>>> something? >>>> >>>> Thanks, >>>> Neil >>>> _______________________________________________ >>>> 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 >>>> >>> >>> >> > _______________________________________________ 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
