From: Hotmail (jthao1@xxxxxxxxxxx)
Date: Mon Dec 10 2001 - 15:33:23 GMT-3
Thomas,
AWESOME!!!! This is what was eluding me. Thanks a million.
Joseph
----- Original Message -----
From: "Thomas, Varghese" <vnthomas@hotmail.com>
To: "Hotmail" <jthao1@hotmail.com>
Sent: Monday, December 10, 2001 1:23 PM
Subject: Re: iBGP to OSPF redistribution - weird behavior?
> bgp redis internal
> ----- Original Message -----
> From: "Hotmail" <jthao1@hotmail.com>
> To: <ccielab@groupstudy.com>
> Sent: Monday, December 10, 2001 12:34 PM
> Subject: Re: iBGP to OSPF redistribution - weird behavior?
>
>
> > Hello group,
> >
> > Here are the complete configs. (slightly modified but illustrates that
rip
> > redistribution does not work also). I discovered this behavior while
> trying
> > to slightly modify fatkid lab 501.
> >
> > r1 ---- r2 ------ r3 ----- r4
> >
> > All connections are serial.
> >
> > r1 and r2 runs OSPF area 0
> > r3 and r4 run rip
> > r2 and r3 run internal BGP AS 10
> > r1 to r2 - 30.30.30.0/24
> > r2 to r3 - 10.10.10.0/24
> > r3 to r4 - 20.20.20.0 /24
> > r2 loopback - 40.40.40.1/24
> > r3 loopback - 50.50.50.1/24
> >
> > Here are the complete configs... HELP !!!! Any of you guys can figure
> this
> > out it'll be appreciated. Is this an IOS bug or am I missing something
> > obvious here?
> >
> > R1 config:
> > Current configuration : 907 bytes
> > !
> > version 12.1
> > service timestamps debug uptime
> > service timestamps log uptime
> > no service password-encryption
> > !
> > hostname R1
> > !
> > !
> > !
> > !
> > !
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > !
> > !
> > !
> > !
> > !
> > interface Loopback0
> > ip address 70.70.70.4 255.255.255.0
> > !
> > interface Ethernet0
> > no ip address
> > shutdown
> > !
> > interface Serial0
> > ip address 30.30.30.4 255.255.255.0
> > no fair-queue
> > clockrate 64000
> > !
> > interface Serial1
> > no ip address
> > shutdown
> > !
> > router ospf 10
> > log-adjacency-changes
> > network 30.30.30.4 0.0.0.0 area 0
> > !
> > ip classless
> > ip http server
> > !
> > !
> > alias router e exit
> > alias interface e exit
> > alias configure e exit
> > alias exec c config t
> > alias exec s sh run
> > alias exec sip sh ip route
> > alias exec sipx sh ipx route
> > alias exec sib sh ip bgp
> > alias exec cib clear ip bgp *
> > alias exec cip clear ip route *
> > alias exec co clear ip ospf process
> > alias exec crs copy run start
> > !
> > line con 0
> > exec-timeout 0 0
> > line aux 0
> > line vty 0 4
> > !
> > end
> >
> > R1#sip
> > 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
> >
> > 70.0.0.0/24 is subnetted, 1 subnets
> > C 70.70.70.0 is directly connected, Loopback0
> > 40.0.0.0/24 is subnetted, 1 subnets
> > O E2 40.40.40.0 [110/10] via 30.30.30.1, 00:03:49, Serial0 ---- r2
> > loopback gets redistribute but not r3 loopback. Why ?????
> > 30.0.0.0/24 is subnetted, 1 subnets
> > C 30.30.30.0 is directly connected, Serial0
> > R1#
> >
> >
> >
> > R2 config:
> > Current configuration : 1227 bytes
> > !
> > version 12.1
> > service timestamps debug uptime
> > service timestamps log uptime
> > no service password-encryption
> > !
> > hostname R2
> > !
> > !
> > !
> > !
> > !
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > !
> > !
> > !
> > !
> > !
> > interface Loopback0
> > ip address 40.40.40.1 255.255.255.0
> > !
> > interface Ethernet0
> > no ip address
> > shutdown
> > !
> > interface Ethernet1
> > no ip address
> > shutdown
> > !
> > interface Serial0
> > ip address 30.30.30.1 255.255.255.0
> > no fair-queue
> > !
> > interface Serial1
> > ip address 10.10.10.1 255.255.255.0
> > clockrate 64000
> > !
> > router ospf 10
> > log-adjacency-changes
> > redistribute bgp 10 metric 10 subnets
> > network 30.30.30.1 0.0.0.0 area 0
> > !
> > router bgp 10
> > no synchronization
> > bgp log-neighbor-changes
> > network 40.40.40.0 mask 255.255.255.0
> > redistribute ospf 10 metric 100 match internal external 1 external 2
> > neighbor 10.10.10.2 remote-as 10
> > no auto-summary
> > !
> > ip classless
> > ip http server
> > !
> > !
> > alias router e exit
> > alias interface e exit
> > alias configure e exit
> > alias exec c config t
> > alias exec s sh run
> > alias exec sip sh ip route
> > alias exec sipx sh ipx route
> > alias exec sib sh ip bgp
> > alias exec cib clear ip bgp *
> > alias exec cip clear ip route *
> > alias exec co clear ip ospf process
> > alias exec crs copy run start
> > !
> > line con 0
> > exec-timeout 0 0
> > line aux 0
> > line vty 0 4
> > !
> > end
> >
> > R2#sip
> > 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
> >
> > 50.0.0.0/24 is subnetted, 1 subnets
> > B 50.50.50.0 [200/0] via 10.10.10.2, 03:04:51
> > 20.0.0.0/24 is subnetted, 1 subnets
> > B 20.20.20.0 [200/0] via 10.10.10.2, 02:13:29
> > 40.0.0.0/24 is subnetted, 1 subnets
> > C 40.40.40.0 is directly connected, Loopback0
> > 10.0.0.0/24 is subnetted, 1 subnets
> > C 10.10.10.0 is directly connected, Serial1
> > 30.0.0.0/24 is subnetted, 1 subnets
> > C 30.30.30.0 is directly connected, Serial0
> > R2#sh ip bgp
> > BGP table version is 9, local router ID is 40.40.40.1
> > 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
> > *>i20.20.20.0/24 10.10.10.2 0 100 0 ?
> > *> 30.30.30.0/24 0.0.0.0 0 32768 ?
> > *> 40.40.40.0/24 0.0.0.0 0 32768 i
> > *>i50.50.50.0/24 10.10.10.2 0 100 0 i
> > R2#
> >
> >
> >
> >
> > R3 config:
> > Building configuration...
> >
> > 03:32:43: %SYS-5-CONFIG_I: Configured from console by console
> > Current configuration : 1235 bytes
> > !
> > version 12.1
> > service timestamps debug uptime
> > service timestamps log uptime
> > no service password-encryption
> > !
> > hostname R3
> > !
> > !
> > !
> > !
> > !
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > !
> > !
> > !
> > !
> > !
> > interface Loopback0
> > ip address 50.50.50.2 255.255.255.0
> > !
> > interface Ethernet0
> > no ip address
> > shutdown
> > !
> > interface Serial0
> > ip address 20.20.20.2 255.255.255.0
> > no fair-queue
> > !
> > interface Serial1
> > ip address 10.10.10.2 255.255.255.0
> > !
> > interface Serial2
> > ip address 80.80.80.2 255.255.255.0
> > !
> > interface Serial3
> > no ip address
> > shutdown
> > !
> > interface BRI0
> > no ip address
> > shutdown
> > isdn x25 static-tei 0
> > !
> > router rip
> > redistribute bgp 10 metric 2
> > network 20.0.0.0
> > !
> > router bgp 10
> > no synchronization
> > bgp log-neighbor-changes
> > network 50.50.50.0 mask 255.255.255.0
> > redistribute rip metric 22
> > neighbor 10.10.10.1 remote-as 10
> > no auto-summary
> > !
> > ip classless
> > ip http server
> > !
> > !
> > alias router e exit
> > alias interface e exit
> > alias configure e exit
> > alias exec c config t
> > alias exec s sh run
> > alias exec sip sh ip route
> > alias exec sipx sh ipx route
> > alias exec sib sh ip bgp
> > alias exec cib clear ip bgp *
> > alias exec cip clear ip route *
> > alias exec co clear ip ospf process
> > alias exec crs copy run start
> > !
> > line con 0
> > exec-timeout 0 0
> > line aux 0
> > line vty 0 4
> > !
> > end
> >
> > R3#sip
> > 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
> >
> > 50.0.0.0/24 is subnetted, 1 subnets
> > C 50.50.50.0 is directly connected, Loopback0
> > 80.0.0.0/24 is subnetted, 1 subnets
> > C 80.80.80.0 is directly connected, Serial2
> > 20.0.0.0/24 is subnetted, 1 subnets
> > C 20.20.20.0 is directly connected, Serial0
> > 40.0.0.0/24 is subnetted, 1 subnets
> > B 40.40.40.0 [200/0] via 10.10.10.1, 03:06:23
> > 10.0.0.0/24 is subnetted, 1 subnets
> > C 10.10.10.0 is directly connected, Serial1
> > 30.0.0.0/24 is subnetted, 1 subnets
> > B 30.30.30.0 [200/0] via 10.10.10.1, 00:05:08
> > R3#sh ip bgp
> > BGP table version is 9, local router ID is 50.50.50.2
> > 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
> > *> 20.20.20.0/24 0.0.0.0 0 32768 ?
> > *>i30.30.30.0/24 10.10.10.1 0 100 0 ?
> > *>i40.40.40.0/24 10.10.10.1 0 100 0 i
> > *> 50.50.50.0/24 0.0.0.0 0 32768 i
> > R3#
> >
> >
> >
> >
> > R4#s
> > Building configuration...
> >
> > Current configuration : 863 bytes
> > !
> > version 12.1
> > service timestamps debug uptime
> > service timestamps log uptime
> > no service password-encryption
> > !
> > hostname R4
> > !
> > !
> > !
> > !
> > !
> > !
> > ip subnet-zero
> > no ip domain-lookup
> > !
> > !
> > !
> > !
> > !
> > !
> > interface Loopback0
> > ip address 60.60.60.3 255.255.255.0
> > !
> > interface Ethernet0
> > no ip address
> > shutdown
> > !
> > interface Serial0
> > ip address 20.20.20.3 255.255.255.0
> > no fair-queue
> > clockrate 64000
> > !
> > interface Serial1
> > no ip address
> > shutdown
> > !
> > router rip
> > network 20.0.0.0
> > !
> > ip classless
> > ip http server
> > !
> > !
> > alias router e exit
> > alias interface e exit
> > alias configure e exit
> > alias exec c config t
> > alias exec s sh run
> > alias exec sip sh ip route
> > alias exec sipx sh ipx route
> > alias exec sib sh ip bgp
> > alias exec cib clear ip bgp *
> > alias exec cip clear ip route *
> > alias exec co clear ip ospf process
> > alias exec crs copy run start
> > !
> > line con 0
> > exec-timeout 0 0
> > line aux 0
> > line vty 0 4
> > !
> > end
> >
> > R4#sip
> > 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
> >
> > R 50.0.0.0/8 [120/2] via 20.20.20.2, 00:00:07, Serial0 ---
Similarly,
> > r3 loopback gets redistributed.
> > 20.0.0.0/24 is subnetted, 1 subnets
> > C 20.20.20.0 is directly connected, Serial0
> > 60.0.0.0/24 is subnetted, 1 subnets
> > C 60.60.60.0 is directly connected, Loopback0
> > R4#
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Hotmail" <jthao1@hotmail.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Monday, December 10, 2001 9:46 AM
> > Subject: iBGP to OSPF redistribution - weird behavior?
> >
> >
> > > Hello Group,
> > >
> > > I have a very simple problem that I'm having a mental block on. I am
> > > performing redistribution of BGP to OSPF but for some reason, iBGP
> > > discovered routes are not getting redistributed into the OSPF domain.
I
> > > have turned off synchronization and auto summary on all BGP routers.
> > >
> > > Can iBGP discovered routes be redistributed into OSPF? I don't see
why
> > not
> > > but I can't do it.
> > >
> > > Here's the scenario:
> > >
> > > r1 ----- r2 ----- r3 ----- r4
> > >
> > > The connections between routers does not matter.
> > >
> > > r1 to r2 - running ospf area 0 only on the interface connecting them
> > > r3 to r4 - running ospf area 0 only on the interface connecting them
> > > r2 to r3 - no IGP, no OSPF, just iBGP AS 10
> > > r2 has a loopback that is introduced into BGP on r2 with the network
> > > command.
> > > r3 has a loopback that is introduced into BGP on r3 with the network
> > > command.
> > >
> > > Mutual redistribution from BGP to OSPF (and vice-versa) is performed
on
> > r3.
> > > r3 loopback appears on r4 but not r2 loopback.
> > >
> > > Also, if you perform mutual redistribution on r2, the same converse
> thing
> > > happens. That is: you can see r2 loopback on r1 but not r3 loopback.
> > >
> > > My question is: Is this the proper behavior. I don't see why iBGP
> > > discovered routes can not be redistributed into OSPF. This does not
> seem
> > > right to me. Am I missing something obvious here?
> > >
> > >
> > > Thanks
> > > Joseph
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:32:41 GMT-3