From: Jay (ccienxtyear@hotmail.com)
Date: Mon Sep 16 2002 - 19:57:51 GMT-3
The summary-address for OSPF routes worked in 11.2. In 12.1, you can only
use it to summarize E1 or E2 routes.
thanks,
Jay
----- Original Message -----
From: "Daniel Garrity" <ccie@garrityfamily.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, September 14, 2002 2:14 PM
Subject: RE: OSPF summary-address and redistribution
> I have run into this exact problem. All documentation states that the
> command summary-address is used to summarize networks
> that are redistributed into OSPF. But, I have also seen labs where it is
> used to summarize OSPF networks before their redistribution into FLSM
> routing protocols (IGRP and RIP). Fatkid Redistribution 501 and Case
> Study #3 from Cisco CCIE Lab Practice Kit (Satterlee and Hutnik) are
> prime examples. Both use the summary-address to summarize a network
> before redistribution into IGRP. Both examples are using IOS version
> 11.2. My lab is setup with IOS version 12.1 (15) and when I attempted
> these labs both would not work using the summary-address command. I had
> to use the area range command instead for the route to be redistributed
> into IGRP.
>
> In looking at the routing tables from the fatkid lab, provided by
> fatkid. I noticed that his summarized network were showing up as a
> summary entry in his table. On version 12.1, no such summary was
> present.
>
> To see if somehow the function of this command had changed, I reload my
> ASBR router with IOS version 11.2 and checked the routing table. Sure
> enough I now showed the summary route in the routing table. Also the
> routes were now showing up in my IGRP table as well.
>
> Somehow the function of this command has be changed to just allow
> summarization into OSPF, instead of bi-directional summarization. Again,
> all documentation states that the command summary-address is used to
> summarize networks
> that are redistributed into OSPF. So it looks like Cisco might have
> adjusted the function of this to match it's original intent.
>
>
> This is just conjecture on my part. If anyone has more concrete
> information please help.
>
> Dan Garrity
>
>
>
>
> Copies of my show run and routing table are included.
>
>
> The networks in question for this lab (fatkid 501) are 170.10.1.0 and
> 170.10.13.0.
>
>
>
>
> NOTE: R4 is my ASBR and R1 is my IGRP backbone.
>
> R4#wr t
> Building configuration...
>
> Current configuration : 2082 bytes
> !
> version 12.1
> no service single-slot-reload-enable
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> !
> hostname R4
> !
> !
> !
> !
> !
> !
> ip subnet-zero
> ip tcp synwait-time 5
> no ip domain-lookup
> !
> !
> !
> !
> interface Loopback0
> ip address 170.10.4.1 255.255.255.0
> ip ospf network point-to-point
> !
> interface Ethernet0
> ip address 170.10.13.4 255.255.255.192
> !
> interface Serial0
> ip address 170.10.30.4 255.255.255.0
> no fair-queue
> !
> interface Serial1
> ip address 192.19.15.4 255.255.255.0
> clockrate 64000
> !
> interface TokenRing0
> ip address 170.10.20.4 255.255.255.0
> ring-speed 16
> !
> router ospf 69
> log-adjacency-changes
> area 2 virtual-link 170.10.5.1
> summary-address 170.10.1.0 255.255.255.0
> summary-address 170.10.13.0 255.255.255.0
> redistribute rip subnets
> redistribute igrp 69 subnets
> network 170.10.4.0 0.0.0.255 area 3
> network 170.10.13.0 0.0.0.63 area 2
> distribute-list disout out
> !
> router rip
> redistribute ospf 69
> redistribute igrp 69
> passive-interface Ethernet0
> passive-interface Loopback0
> passive-interface Serial0
> passive-interface Serial1
> network 170.10.0.0
> default-metric 3
> !
> router igrp 69
> redistribute ospf 69
> redistribute rip metric 1 10 125 125 1500
> passive-interface Ethernet0
> passive-interface Loopback0
> passive-interface Serial1
> passive-interface TokenRing0
> network 170.10.0.0
> default-metric 64 3 255 1 1500
> !
> ip classless
> ip http server
> !
> !
> ip access-list standard disout
> route-map disout deny 10
> match route-type external
> !
> !
> alias exec r show ip route
> alias exec xr show ipx route
> alias exec c show running-config
> alias exec i show ip int brief
> alias exec xi show ipx int brief
> alias exec o show ip ospf
> alias exec t config term
> alias exec b show ip bgp
> alias exec e show ip eigrp
> alias exec xe show ipx eigrp
> !
> line con 0
> exec-timeout 0 0
> privilege level 15
> logging synchronous
> length 42
> line aux 0
> privilege level 15
> line vty 0 4
> exec-timeout 0 0
> privilege level 15
> logging synchronous
> no login
> length 42
> !
> end
>
> R4#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
>
> 170.10.0.0/16 is variably subnetted, 11 subnets, 3 masks
> R 170.10.40.0/24 [120/1] via 170.10.20.3, 00:00:16, TokenRing0
> O 170.10.1.0/28 [110/74] via 170.10.13.5, 00:03:02, Ethernet0
> O E2 170.10.2.0/24 [110/20] via 170.10.13.5, 00:03:02, Ethernet0
> R 170.10.3.0/24 [120/1] via 170.10.20.3, 00:00:16, TokenRing0
> C 170.10.4.0/24 is directly connected, Loopback0
> O 170.10.5.0/24 [110/11] via 170.10.13.5, 00:03:02, Ethernet0
> O E2 170.10.12.0/24 [110/20] via 170.10.13.5, 00:03:03, Ethernet0
> C 170.10.13.0/26 is directly connected, Ethernet0
> C 170.10.20.0/24 is directly connected, TokenRing0
> I 170.10.21.0/24 [100/8976] via 170.10.30.1, 00:01:07, Serial0
> C 170.10.30.0/24 is directly connected, Serial0
> C 192.19.15.0/24 is directly connected, Serial1
> R4#
>
>
> R1#
> 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
>
> 170.10.0.0/24 is subnetted, 10 subnets
> I 170.10.40.0 [100/10002010] via 170.10.30.4, 00:00:22, Serial3
> I 170.10.2.0 [100/158253] via 170.10.30.4, 00:00:22, Serial3
> I 170.10.3.0 [100/10002010] via 170.10.30.4, 00:00:22, Serial3
> I 170.10.4.0 [100/89456] via 170.10.30.4, 00:00:22, Serial3
> I 170.10.5.0 [100/158253] via 170.10.30.4, 00:00:22, Serial3
> I 170.10.12.0 [100/158253] via 170.10.30.4, 00:00:22, Serial3
> I 170.10.13.0 [100/10002010] via 170.10.30.4, 00:00:22, Serial3
> I 170.10.20.0 [100/89019] via 170.10.30.4, 00:00:23, Serial3
> C 170.10.21.0 is directly connected, Loopback0
> C 170.10.30.0 is directly connected, Serial3
> R1#
>
>
>
> With Version 11.2
>
>
> R4#
> R4#wr t
> Building configuration...
>
> Current configuration:
> !
> version 11.2
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> no service udp-small-servers
> no service tcp-small-servers
> !
> hostname R4
> !
> !
> ip subnet-zero
> ip tcp synwait-time 5
> no ip domain-lookup
> !
> interface Loopback0
> ip address 170.10.4.1 255.255.255.0
> !
> interface Ethernet0
> ip address 170.10.13.4 255.255.255.192
> !
> interface Serial0
> ip address 170.10.30.4 255.255.255.0
> no fair-queue
> !
> interface Serial1
> ip address 192.19.15.4 255.255.255.0
> clockrate 64000
> !
> interface TokenRing0
> ip address 170.10.20.4 255.255.255.0
> ring-speed 16
> !
> router ospf 69
> summary-address 170.10.1.0 255.255.255.0
> summary-address 170.10.13.0 255.255.255.0
> redistribute rip subnets
> redistribute igrp 69 subnets
> network 170.10.4.0 0.0.0.255 area 3
> network 170.10.13.0 0.0.0.63 area 2
> distribute-list disout out
> area 2 virtual-link 170.10.5.1
> !
> router rip
> redistribute ospf 69
> redistribute igrp 69
> passive-interface Ethernet0
> passive-interface Loopback0
> passive-interface Serial0
> passive-interface Serial1
> network 170.10.0.0
> default-metric 3
> !
> router igrp 69
> redistribute ospf 69
> redistribute rip metric 1 10 125 125 1500
> passive-interface Ethernet0
> passive-interface Loopback0
> passive-interface Serial1
> passive-interface TokenRing0
> network 170.10.0.0
> default-metric 64 3 255 1 1500
> !
> ip classless
> ip http server
> !
> ip access-list standard disout
> route-map disout deny 10
> match route-type external
> !
> !
> alias exec r show ip route
> alias exec xr show ipx route
> alias exec c show running-config
> alias exec i show ip int brief
> alias exec xi show ipx int brief
> alias exec o show ip ospf
> alias exec t config term
> alias exec b show ip bgp
> alias exec e show ip eigrp
> alias exec xe show ipx eigrp
> !
> line con 0
> exec-timeout 0 0
> privilege level 15
> logging synchronous
> length 42
> line aux 0
> privilege level 15
> line vty 0 4
> exec-timeout 0 0
> privilege level 15
> logging synchronous
> no login
> length 42
> !
> end
>
> R4#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
>
> 170.10.0.0/16 is variably subnetted, 13 subnets, 3 masks
> R 170.10.40.0/24 [120/1] via 170.10.20.3, 00:00:11, TokenRing0
> O 170.10.1.0/28 [110/74] via 170.10.13.5, 00:01:50, Ethernet0
> O 170.10.1.0/24 is a summary, 00:02:39, Null0
> O E2 170.10.2.0/24 [110/20] via 170.10.13.5, 00:01:50, Ethernet0
> R 170.10.3.0/24 [120/1] via 170.10.20.3, 00:00:11, TokenRing0
> C 170.10.4.0/24 is directly connected, Loopback0
> O 170.10.5.0/24 [110/11] via 170.10.13.5, 00:02:15, Ethernet0
> O E2 170.10.12.0/24 [110/20] via 170.10.13.5, 00:01:50, Ethernet0
> C 170.10.13.0/26 is directly connected, Ethernet0
> O 170.10.13.0/24 is a summary, 00:02:40, Null0
> C 170.10.20.0/24 is directly connected, TokenRing0
> I 170.10.21.0/24 [100/8976] via 170.10.30.1, 00:00:28, Serial0
> C 170.10.30.0/24 is directly connected, Serial0
> C 192.19.15.0/24 is directly connected, Serial1
> R4#
>
> 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
>
> 170.10.0.0/24 is subnetted, 11 subnets
> I 170.10.40.0 [100/10002010] via 170.10.30.4, 00:00:55, Serial3
> I 170.10.1.0 [100/158253] via 170.10.30.4, 00:00:55, Serial3
> I 170.10.2.0 [100/158253] via 170.10.30.4, 00:00:55, Serial3
> I 170.10.3.0 [100/10002010] via 170.10.30.4, 00:00:55, Serial3
> I 170.10.4.0 [100/89456] via 170.10.30.4, 00:00:55, Serial3
> I 170.10.5.0 [100/158253] via 170.10.30.4, 00:00:55, Serial3
> I 170.10.12.0 [100/158253] via 170.10.30.4, 00:00:55, Serial3
> I 170.10.13.0 [100/158253] via 170.10.30.4, 00:00:56, Serial3
> I 170.10.20.0 [100/89019] via 170.10.30.4, 00:00:56, Serial3
> C 170.10.21.0 is directly connected, Loopback0
> C 170.10.30.0 is directly connected, Serial3
> R1#
>
>
>
>
> -----Original Message-----
> From: Claudine DEMAR [mailto:lkcnet00@hotmail.com]
> Sent: Friday, September 13, 2002 5:14 AM
> To: ccielab@groupstudy.com
> Subject: OSPF summary-address and redistribution
>
>
> Hello,
>
> Quick a confirmation regarding the OSPF summary-address command.
> I've read everwhere that this command is only used to summarise networks
>
> that are redistributed into OSPF. Netherless, I could see some
> corrections(like the fatkid red501) where it seems that this command is
> used
> to summarise OSPF networks before their redistribution into another RP.
> Trying it imy lab, I can not make this work. Can anybody confirm that
> the
> summary address ONLY summarise networks that are redistributed into
> OSPF. If
> there are other use for this command, can you provide a good working
> example. Maybe there's something else to be configured to make it work
> ...
>
> Let me know.
> Many thanks,
>
> Claudine
>
>
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