I suspect your ISIS between Glori and Bilbo is either not working or this specific route is not exchanged with ISIS. Can we see the whole config for these bad boys ? Also, what happens when you shut the BGP session between Bilbo and Elrand, do you get the ISIS route then ?
You don't need backdoor command on Erland either. "Wilson, Christian"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > I am struggling with BGP backdoor. I seem to get the more complicated > aspects of BGP, but this backdoor command is really getting me down. I test > on Friday and would appreciate any help. In the configs below, BILBO and > GLORI have EBGP connections to ELROND. BILBO and GLORI have a ISIS > connection between each other. ISIS is actually running on all the routers > as an IGP. All the routers know about the network 3.0.0.0 from ISIS. GLORI > injects 3.0.0.0 into BGP using the network command and the update is sent > across the EBGP connection to ELROND, who in turn passes the update across > his EBGP connection to BILBO. BILBO has the "network 3.0.0.0 backdoor" > added to his configuration, but the BGP route still appears in the routing > table instead of the ISIS route. I have omitted a lot of the config files > because they are huge and harsh to read through, but I tried to include all > relevant text. I have tried this so many ways and times that I am beginning > to have doubts about myself since such a seemingly simple task is stumping > me. Please help!! > > hostname Bilbo > > interface Serial0/0 > no ip address > encapsulation frame-relay > ! > interface Serial0/0.1 multipoint > ip address 150.150.10.1 255.255.255.0 > ip router isis > ip ospf network point-to-multipoint > ! > interface Serial0/0.2 point-to-point > ip address 150.150.20.1 255.255.255.0 > ip router isis > ipx network 200 > ipx nlsp a1 enable > frame-relay interface-dlci 940 > ! > router bgp 100 > network 3.0.0.0 backdoor > neighbor 150.150.20.2 remote-as 200 > > Bilbo#b > BGP table version is 2, local router ID is 200.200.9.1 > Status codes: s suppressed, d damped, h history, * valid, > best, i - > internal > Origin codes: i - IGP, e - EGP, ? - incomplete > > Network Next Hop Metric LocPrf Weight Path > *> 3.0.0.0 150.150.20.2 0 200 300 i > > Bilbo#i > i L2 1.0.0.0/8 [115/20] via 150.150.20.2, Serial0/0.2 > C 2.0.0.0/8 is directly connected, Virtual-TokenRing2 > B 3.0.0.0/8 [20/0] via 150.150.20.2, 00:26:45 > i L2 4.0.0.0/8 [115/20] via 150.150.10.2, Serial0/0.1 > O E1 5.0.0.0/8 [110/128] via 150.150.10.3, 00:29:29, Serial0/0.1 > O E1 200.200.220.0/24 [110/128] via 150.150.10.3, 00:29:29, Serial0/0.1 > > > > hostname Elrond > > interface Serial0/0.1 point-to-point > ip address 150.150.20.2 255.255.255.0 > no ip directed-broadcast > ip router isis > ipx network 200 > > interface Serial0/0.3 point-to-point > ip address 150.150.21.1 255.255.255.0 > no ip directed-broadcast > ip router isis > ipx network 21 > > router bgp 200 > network 3.0.0.0 backdoor > neighbor 150.150.20.1 remote-as 100 > neighbor 150.150.21.2 remote-as 300 > > Elrond#b > BGP table version is 2, local router ID is 200.200.240.1 > Status codes: s suppressed, d damped, h history, * valid, > best, i - > internal > Origin codes: i - IGP, e - EGP, ? - incomplete > > Network Next Hop Metric LocPrf Weight Path > *> 3.0.0.0 150.150.21.2 0 0 300 i > > > hostname GLORI > > interface Serial0/0 > ip address 150.150.10.2 255.255.255.0 > no ip directed-broadcast > ip router isis > encapsulation frame-relay > > interface Serial0/0.2 point-to-point > ip address 150.150.21.2 255.255.255.0 > no ip directed-broadcast > ip router isis > ipx network 21 > > router bgp 300 > network 3.0.0.0 > neighbor 150.150.21.1 remote-as 200 > > GLORI#b > BGP table version is 2, local router ID is 200.200.230.1 > Status codes: s suppressed, d damped, h history, * valid, > best, i - > internal > Origin codes: i - IGP, e - EGP, ? - incomplete > > Network Next Hop Metric LocPrf Weight Path > *> 3.0.0.0 0.0.0.0 0 32768 i > > GLORI#i > i L2 1.0.0.0/8 [115/30] via 150.150.10.1, Serial0/0 > C 3.0.0.0/8 is directly connected, Virtual-TokenRing3 > C 4.0.0.0/8 is directly connected, Virtual-TokenRing4 > i L2 5.0.0.0/8 [115/84] via 150.150.10.1, Serial0/0 > i L2 200.200.220.0/24 [115/84] via 150.150.10.1, Serial0/0 > i L2 6.0.0.0/8 [115/84] via 150.150.10.1, Serial0/0 > i L2 200.200.241.0/24 [115/84] via 150.150.10.1, Serial0/0 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=33435&t=33423 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
