From: Warner, Thomas S (thomas.s.warner@lmco.com)
Date: Tue Sep 17 2002 - 10:31:12 GMT-3
Brian
It fixed my problem. Thanks for the assistance.
Tom
-----Original Message-----
From: Brian McGahan [mailto:brian@cyscoexpert.com]
Sent: Monday, September 16, 2002 8:10 PM
To: 'Warner, Thomas S'; ccielab@groupstudy.com
Subject: RE: IBGP route redistribution into another IGP
Tom,
By default, you cannot redistribute iBGP learned prefixes into
BGP.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/
ip_r/iprprt2/1rdbgp.htm#xtocid17
bgp redistribute-internal
To allow the redistribution of iBGP routes into an interior gateway
protocol such as IS-IS or OSPF, use the bgp redistribute-internal
command in router configuration mode. To remove the bgp
redistribute-internal command from the configuration file and restore
the system to its default condition where the software does not allow
the redistribution of iBGP routes into Interior Gateway Protocols
(IGPs), use the no form of this command.
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
http://www.cyscoexpert.com
Voice: 847.674.3392
Fax: 847.674.2625
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Warner, Thomas S
> Sent: Monday, September 16, 2002 5:56 PM
> To: 'ccielab@groupstudy.com'
> Subject: IBGP route redistribution into another IGP
>
> All
>
> I have the following scenario:
>
>
> IGRP IGRP/BGP (6075) BGP (6075)
> R1 ----------------- R2 --------------- R3
> (.2) (.1) (.4) (.30) 200.200.200.1/24 loop 0
> 192.168.209.0/24 192.91.152.0/27
>
>
> R3 is running BGP in AS 6075
> R2 is running BGP in AS 6075 and IGRP
> R2 is redistributing BGP into IGRP but it is not working. I can not
get
> the
> 200.200.200.0/24 network redistributed from BGP into IGRP. This
scenario
> above will work if R2 and R3 are EBGP neighbors (ex R2 AS 6075 and R3
AS
> 100) but not when they are IBGP neighbors. What fundamental BGP or
> redistribution concept am I missing? Does it have to do with the
origin
> of
> the route? All relevant portions of the configs and bgp/routing tables
are
> included below. I've even tried replacing IGRP w/OSPF, RIP, and EIGRP
> with
> no luck. Please assist. Thanks,
>
> R1:
>
> router igrp 233
> timers basic 15 30 30 45
> network 192.168.209.0
>
> R1#show ip route
> Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B -
BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter
> area
> * - candidate default, U - per-user static route, o - ODR
> P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> C 192.168.209.0/24 is directly connected, Serial0/0
>
> R2
>
> router igrp 233
> timers basic 15 30 30 45
> redistribute bgp 6075 metric 1000 100 255 1 1500
> network 192.168.209.0
> !
> router bgp 6075
> no synchronization
> neighbor 192.91.152.30 remote-as 6075
>
> R2#show ip route
> Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B -
BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * -
candidate
> default
> U - per-user static route, o - ODR
>
> Gateway of last resort is not set
>
> C 192.168.209.0/24 is directly connected, Serial1/0/0
> B 200.200.200.0/24 [200/0] via 192.91.152.30, 00:03:25
> 192.91.152.0/27 is subnetted, 1 subnets
> C 192.91.152.0 is directly connected, Serial1/0/1
>
> R2#show ip bgp
> BGP table version is 13, local router ID is 10.0.0.3
> 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
> *>i200.200.200.0 192.91.152.30 0 100 0 i
>
>
> R3:
>
> interface Loopback0
> ip address 200.200.200.1 255.255.255.0
> no ip directed-broadcast
>
> router bgp 6075
> network 200.200.200.0
> neighbor 192.91.152.4 remote-as 6075
>
>
> R3#show ip route
> Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B -
BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * -
candidate
> default
> U - per-user static route, o - ODR
>
> Gateway of last resort is not set
>
> C 200.200.200.0/24 is directly connected, Loopback0
> 192.91.152.0/27 is subnetted, 1 subnets
> C 192.91.152.0 is directly connected, Serial0/0
> R3#
>
> R3#show ip bgp
> BGP table version is 2, local router ID is 200.200.200.1
> 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
> *> 200.200.200.0 0.0.0.0 0 32768 i
>
>
> Tom Warner
> Lockheed Martin Enterprise Information Systems
> Computing and Network Services
> email: mailto:thomas.s.warner@lmco.com
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