From: Brian McGahan (brian@cyscoexpert.com)
Date: Tue Sep 17 2002 - 00:17:51 GMT-3
Correction, my posting should read:
By default, you cannot redistribute iBGP learned prefixes into IGP.
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
> Brian McGahan
> Sent: Monday, September 16, 2002 7:10 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
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:54 GMT-3