From: Steve! (stewells@xxxxxxxxxxxxxxxx)
Date: Mon Feb 12 2001 - 01:55:15 GMT-3
Peter,
summary-address in OSPF are used to inject summary routes outside of the
OSPF routing process but present in the routing table into OSPF. From your
configs it looks like you are trying to summarize an OSPF interface,
10.1.23.5/30 Serial 1, to 10.1.23.0/24 & inject this summary into OSPF, so
that it can be redistributed into IGRP and show up on r1. I don't think this
will work without.adding ip route 10.1.23.0 255.255.255.0 null0. This
should fix the problem.
Steve!
----- Original Message -----
From: "Peter" <peter@web53.com>
To: <ccielab@groupstudy.com>
Sent: Sunday, February 11, 2001 7:36 PM
Subject: VLSM-FLSM Mutual Redistribution Question
> Hello,
>
> This is my topology:
> r1s0--r2s0
> r2s1--r3s0
> r2e0--r4e0
>
> r1 and r2 are running IGRP and r2, r3 and r4 are running OSPF. r2 is
doing
> mutual redistribution which works fine EXCEPT for the serial link between
r2
> and r3. If I add the 'summary-address 10.1.23.0 255.255.255.0' to the
ospf
> process on r2, the network shows up on r1. I then save all configs,
reload
> the routers and the 10.1.23.0 network will not summarize and get
> redistributed. I have included the configs and route tables for r1 and r2
> both before and after reload. If anyone can shed some light on this, it
> would be greatly appreciated.
>
> Thank you.
> Peter
>
> r1#sho run
> Building configuration...
>
> Current configuration:
> !
> version 12.0
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> !
> hostname r1
> !
> enable password cisco
> !
> ip subnet-zero
> no ip domain-lookup
> !
> !
> controller T1 0
> clock source line primary
> !
> controller T1 1
> clock source line secondary
> !
> !
> interface Loopback0
> ip address 1.1.1.1 255.255.255.0
> no ip directed-broadcast
> !
> interface Ethernet0
> ip address 10.1.1.11 255.255.255.0
> no ip directed-broadcast
> ip nat outside
> !
> interface Serial0
> ip address 10.1.12.1 255.255.255.0
> no ip directed-broadcast
> ip nat inside
> no ip mroute-cache
> no fair-queue
> !
> interface Serial1
> no ip address
> no ip directed-broadcast
> shutdown
> !
> router igrp 10
> network 1.0.0.0
> network 10.0.0.0
> !
> ip nat inside source list 1 interface Ethernet0 overload
> ip classless
> !
> access-list 1 permit 10.0.0.0 0.255.255.255
> !
> !
> line con 0
> transport input none
> line 1 24
> line aux 0
> line vty 0 4
> exec-timeout 0 0
> password cisco
> login
> !
> end
>
>
> r2#sho run
> Building configuration...
>
> Current configuration:
> !
> version 11.2
> no service udp-small-servers
> no service tcp-small-servers
> !
> hostname r2
> !
> enable password cisco
> !
> no ip domain-lookup
> !
> controller T1 0
> !
> controller T1 1
> !
> interface Loopback0
> ip address 2.2.2.2 255.255.255.0
> !
> interface Ethernet0
> ip address 10.1.24.2 255.255.255.0
> ip ospf message-digest-key 1 md5 cisco
> !
> interface Serial0
> ip address 10.1.12.2 255.255.255.0
> clockrate 56000
> !
> interface Serial1
> ip address 10.1.23.5 255.255.255.252
> ip ospf message-digest-key 1 md5 cisco
> clockrate 56000
> !
> router ospf 10
> summary-address 10.1.4.0 255.255.255.0
> summary-address 10.1.3.0 255.255.255.0
> summary-address 10.1.23.0 255.255.255.0
> redistribute connected metric 30 subnets route-map serial
> redistribute igrp 10 metric 30 subnets
> network 2.2.2.2 0.0.0.0 area 0
> network 10.1.23.5 0.0.0.0 area 0
> network 10.1.24.2 0.0.0.0 area 24
> distribute-list 1 out igrp 10
> area 0 authentication message-digest
> area 24 virtual-link 4.4.4.4 message-digest-key 1 md5 cisco
> !
> router igrp 10
> redistribute connected metric 100 1 255 1 1500 route-map loop
> redistribute ospf 10 metric 100 1 255 1 1500
> passive-interface Ethernet0
> passive-interface Serial1
> network 10.0.0.0
> distribute-list 2 out ospf 10
> !
> no ip classless
> no logging console
> access-list 1 permit 10.1.1.0 0.0.0.255
> access-list 1 permit 1.0.0.0 0.255.255.255
> access-list 2 permit 3.0.0.0 0.255.255.255
> access-list 2 permit 4.0.0.0 0.255.255.255
> access-list 2 permit 10.1.12.0 0.0.0.255
> access-list 2 permit 10.1.23.0 0.0.0.255
> access-list 2 permit 10.1.4.0 0.0.0.255
> access-list 2 permit 2.0.0.0 0.255.255.255
> access-list 2 permit 10.1.3.0 0.0.0.255
> access-list 3 permit 2.0.0.0 0.255.255.255
> access-list 4 permit 10.1.12.0 0.0.0.255
> route-map serial permit 10
> match ip address 4
> !
> route-map loop permit 10
> match ip address 3
> !
> !
> !
> line con 0
> line 1 24
> line aux 0
> line vty 0 4
> exec-timeout 0 0
> password cisco
> login
> !
> end
>
> r2#
>
> *****ROUTING TABLES BEFORE RELOAD*****
> r1#sho ip rout
> 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
>
> 1.0.0.0/24 is subnetted, 1 subnets
> C 1.1.1.0 is directly connected, Loopback0
> I 2.0.0.0/8 [100/102001] via 10.1.12.2, 00:00:17, Serial0
> I 3.0.0.0/8 [100/102001] via 10.1.12.2, 00:00:17, Serial0
> I 4.0.0.0/8 [100/102001] via 10.1.12.2, 00:00:17, Serial0
> 10.0.0.0/24 is subnetted, 6 subnets
> C 10.1.12.0 is directly connected, Serial0
> I 10.1.3.0 [100/102001] via 10.1.12.2, 00:00:17, Serial0
> C 10.1.1.0 is directly connected, Ethernet0
> I 10.1.4.0 [100/102001] via 10.1.12.2, 00:00:17, Serial0
> I 10.1.24.0 [100/102001] via 10.1.12.2, 00:00:17, Serial0
> I 10.1.23.0 [100/102001] via 10.1.12.2, 00:00:17, Serial0
> r1#
>
> r2#sho ip rout
> 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
>
> I 1.0.0.0/8 [100/8976] via 10.1.12.1, 00:00:10, Serial0
> 2.0.0.0/24 is subnetted, 1 subnets
> C 2.2.2.0 is directly connected, Loopback0
> 3.0.0.0/32 is subnetted, 1 subnets
> O 3.3.3.3 [110/65] via 10.1.23.6, 00:19:26, Serial1
> 4.0.0.0/32 is subnetted, 1 subnets
> O 4.4.4.4 [110/11] via 10.1.24.4, 00:19:36, Ethernet0
> 10.0.0.0/8 is variably subnetted, 10 subnets, 5 masks
> C 10.1.12.0/24 is directly connected, Serial0
> O 10.1.3.0/24 is a summary, 00:00:31, Null0
> I 10.1.1.0/24 [100/8576] via 10.1.12.1, 00:00:10, Serial0
> O 10.1.4.0/24 is a summary, 00:00:31, Null0
> C 10.1.24.0/24 is directly connected, Ethernet0
> C 10.1.23.4/30 is directly connected, Serial1
> O 10.1.23.0/24 is a summary, 00:00:32, Null0
> O IA 10.1.4.16/28 [110/20] via 10.1.24.4, 00:19:28, Ethernet0
> O IA 10.1.4.40/29 [110/20] via 10.1.24.4, 00:19:28, Ethernet0
> O IA 10.1.3.32/27 [110/74] via 10.1.23.6, 00:19:28, Serial1
> r2#
>
>
> *****ROUTING TABLES AFTER RELOAD*****
> r1#sho ip rout
> 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
>
> 1.0.0.0/24 is subnetted, 1 subnets
> C 1.1.1.0 is directly connected, Loopback0
> I 2.0.0.0/8 [100/102001] via 10.1.12.2, 00:00:56, Serial0
> I 3.0.0.0/8 [100/102001] via 10.1.12.2, 00:00:56, Serial0
> I 4.0.0.0/8 [100/102001] via 10.1.12.2, 00:00:56, Serial0
> 10.0.0.0/24 is subnetted, 5 subnets
> C 10.1.12.0 is directly connected, Serial0
> I 10.1.3.0 [100/102001] via 10.1.12.2, 00:00:56, Serial0
> C 10.1.1.0 is directly connected, Ethernet0
> I 10.1.4.0 [100/102001] via 10.1.12.2, 00:00:56, Serial0
> I 10.1.24.0 [100/102001] via 10.1.12.2, 00:00:56, Serial0
> r1#
> r2#sho ip rout
> 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
>
> I 1.0.0.0/8 [100/8976] via 10.1.12.1, 00:00:53, Serial0
> 2.0.0.0/24 is subnetted, 1 subnets
> C 2.2.2.0 is directly connected, Loopback0
> 3.0.0.0/32 is subnetted, 1 subnets
> O 3.3.3.3 [110/65] via 10.1.23.6, 00:17:17, Serial1
> 4.0.0.0/32 is subnetted, 1 subnets
> O 4.4.4.4 [110/11] via 10.1.24.4, 00:17:27, Ethernet0
> 10.0.0.0/8 is variably subnetted, 9 subnets, 5 masks
> C 10.1.12.0/24 is directly connected, Serial0
> O 10.1.3.0/24 is a summary, 00:17:36, Null0
> I 10.1.1.0/24 [100/8576] via 10.1.12.1, 00:00:53, Serial0
> O 10.1.4.0/24 is a summary, 00:17:36, Null0
> C 10.1.24.0/24 is directly connected, Ethernet0
> C 10.1.23.4/30 is directly connected, Serial1
> O IA 10.1.4.16/28 [110/20] via 10.1.24.4, 00:17:18, Ethernet0
> O IA 10.1.4.40/29 [110/20] via 10.1.24.4, 00:17:19, Ethernet0
> O IA 10.1.3.32/27 [110/74] via 10.1.23.6, 00:17:19, Serial1
> r2#
>
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