From: Hotmail (jthao1@xxxxxxxxxxx)
Date: Mon Dec 10 2001 - 17:13:00 GMT-3
That's the reason. Figured that out with Thomas' help.
Joseph
----- Original Message -----
From: "Ouellette, Tim" <tim.ouellette@eds.com>
To: <jthao1@hotmail.com>
Sent: Monday, December 10, 2001 3:03 PM
Subject: RE: iBGP to OSPF redistribution - weird behavior?
> After looking at the long thread and drawing it out it struck me that r2
> wouldn't send the 30.30.30.0/24 update to r3 due to the fact that it won't
> advertise an IGP learned router to an IBGP neighbor hence the reason for
the
> bgp redistribute-internal. Does that make sense? Never used that command
> before, interesting!
>
>
> Tim
>
> -----Original Message-----
> From: Hotmail [mailto:jthao1@hotmail.com]
> Sent: Monday, December 10, 2001 1:57 PM
> To: Williams, Glenn
> Cc: > Subject: Re: iBGP to OSPF redistribution - weird behavior?
>
>
> Yeap... awesome guy.
>
> Just put bgp redistribute-internal under router bgp 10.
>
>
>
> Joseph
>
>
> ----- Original Message -----
> From: "Williams, Glenn" <WILLIAMSG@PANASONIC.COM>
> To: "'Hotmail'" <jthao1@hotmail.com>
> Sent: Monday, December 10, 2001 1:45 PM
> Subject: RE: iBGP to OSPF redistribution - weird behavior?
>
>
> > Did Thomas figure the answer?
> >
> > GW
> >
> > -----Original Message-----
> > From: Hotmail [mailto:jthao1@hotmail.com]
> > Sent: Monday, December 10, 2001 12:33 PM
> > To: Thomas, Varghese
> > Cc: ccielab@groupstudy.com
> > Subject: Re: iBGP to OSPF redistribution - weird behavior?
> >
> >
> > 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