must be summarized on the 59.3 router. The networks are
172.17.59.104/30, 172.17.59.108/30, and 172.17.59.96/29. These must be
summarized to a /28. The key observation is that all three subnets
summarize to the same /28 network, 172.17.59.96. Using a "area x range
172.17.59.96 255.255.255.240" summarization on the 59.3 router will put
this route in r4's routing table. You will not see the 104 or 108
routes in r4 but they are reachable from r4. The mutual redistribution
between IGRP and OSPF has to be on the router attached to the IGRP
domain, r2, although you say it is on r1.
r2 will have a /30 for 104 from 59.1 and a /28 for .96 from 59.3
(covering the 96 and 108 networks); a ping from r4 will use a longest
match on r2 to be routed to either 59.1 or 59.3.
(configs were shipped separately)
Cheers, Fred.
"Virnoche, Phil" wrote:
>
> Here is my problem:
>
> The major network is 172.17.0.0
> (OSPF domain with /28, /29, /30) R2 -----IGRP link/28------ R4 (IGRP domain
> /28)
>
> Mutual redistribution at R1... knowing that I have only 1 network (variably
> subnetted) how can I get a "default network" in R2 and make the whole
> network reachable from R4 ?????
>
> r2#sho ip rou
> Gateway of last resort is not set
>
> 172.17.0.0/16 is variably subnetted, 9 subnets, 3 masks
> C 172.17.59.0/28 is directly connected, Serial0/0
> C 172.17.59.16/28 is directly connected, BRI0/0
> C 172.17.59.32/28 is directly connected, FastEthernet0/0
> C 172.17.59.48/28 is directly connected, Serial0/1
> O IA 172.17.59.64/28 [110/112] via 172.17.59.3, 07:50:24, Serial0/0
> I 172.17.59.80/28 [100/8576] via 172.17.59.50, 00:01:04, Serial0/1
> O IA 172.17.59.96/29 [110/70] via 172.17.59.3, 07:50:24, Serial0/0
> O IA 172.17.59.108/30 [110/118] via 172.17.59.3, 07:50:25, Serial0/0
> O IA 172.17.59.104/30 [110/65] via 172.17.59.1, 07:50:25, Serial0/0
>
> r4#sho ip rou
>
> Gateway of last resort is not set
>
> 172.17.0.0/28 is subnetted, 6 subnets
> I 172.17.59.0 [100/10476] via 172.17.59.49, 00:00:18, Serial0
> I 172.17.59.16 [100/160250] via 172.17.59.49, 00:00:18, Serial0
> I 172.17.59.32 [100/8486] via 172.17.59.49, 00:00:18, Serial0
> C 172.17.59.48 is directly connected, Serial0
> I 172.17.59.64 [100/8576] via 172.17.59.49, 00:00:18, Serial0
> C 172.17.59.80 is directly connected, Ethernet0
>
> Philip G. Virnoche
> Sr. Network Engineer - AT&T Wireless
> phone: 425.580.5239
> cell: 206.601.3134
>
> "HAM AND EGGS - A day's work for a chicken; A lifetime commitment for a
> pig."
> FAQ, list archives, and subscription info:
http://www.groupstudy.com/list/cisco.html
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=4201&t=3983
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
