From: Connary, Julie Ann (jconnary@xxxxxxxxx)
Date: Tue Jan 16 2001 - 15:25:02 GMT-3
Whose routing table - R5's or R4's?
The network is in R5's routing table, but not in R4's.
p.s. I propagated the route redistributing ospf into igrp - and still no
default until I actually entered
the ip default-network command on R4. does not make sense.
Julie Ann
At 01:14 PM 1/16/2001 -0500, you wrote:
>One thing you did not mention, and perhaps the reason for your difficulty is
>that the network that it references has to be in it's routing table.
>
>
>"Connary, Julie Ann" <jconnary@cisco.com> wrote:
>Hi All,
>
>I know there have been many discussions on this - but what I don't
>understand is how to get IGRP to propagate a default-network. I understand
>the defualt-network has to point to a network that is not in the same
>address space as IGRP and it must be classfull.
>But why does it not propagate to downstream neighbors?
>
>Here is the scenario - R5 is redistributing from IGRP into OSPF and RIP V2
>into OSPF. I do not want
>to redistribute OSPF into IGRP or RIP V2 - but use a default-network instead.
>
>
>
>R7---Rip V2
>|
>|E 0 - 170.100.42.241/28
>|
>R5 -------- S0.2 ------------R3 -----s0
>------------------r6-------205.0.5.0 AND non 24 bit 170.100 networks off of
>R6
> | 170.100.65.0/24 170.100.68.0/24
>| OSPF
>|
>|
>S0.1 - igrp - 170.100.1.0/24
>|
>R4
>
>
>So, I put in R5 the following command:
>
>ip default-network 205.0.5.0
>
>and I got a gateway of last resort in R5. (I also tried setting the ip
>default-network to 170.100.65.0, but that just installed a static route and
>no gateway of last resort). However IGRP is not propagating this default to
>R4. Is this because 205.0.5.0 is an OSPF learned
>route? R4 has no knowledge of the 210.0.5.0 network - however, I thought
>that R5 would source down
>to R4 that it had a default and R4 would have a gateway of last resort to
>R5. R7, the Rip V2 router does receive the default network and it points it
>toward R5. Am I missing something here?
>
>Here is my routing table:
>
>Gateway of last resort is 170.100.65.3 to network 210.0.5.0
>
> 170.100.0.0/16 is variably sub
>01netted, 13 subnets, 3 masks
>I 170.100.200.0/24 [100/8576] via 170.100.1.4, 00:00:50, Serial0.1
>C 170.100.42.240/28 is directly connected, Ethernet0
>O IA 170.100.233.1/32 [110/75] via 170.100.65.2, 00:25:04, Serial0.2
>O IA 170.100.233.0/24 [110/65] via 170.100.65.3, 00:25:04, Serial0.2
>O E2 170.100.129.0/24 [110/20] via 170.100.65.2, 00:25:04, Serial0.2
>O E2 170.100.150.0/24 [110/20] via 170.100.65.3, 00:25:04, Serial0.2
>O IA 170.100.68.0/24 [110/128] via 170.100.65.3, 00:25:04, Serial0.2
>O IA 170.100.67.6/32 [110/129] via 17:05:06: %SYS-5-CONFIG_I: Configured
>from
> console by console0.100.65.3, 00:25:04, Serial0.2
>C 170.100.66.0/28 is directly connected, BRI0
>O IA 170.100.64.0/24 [110/74] via 170.100.65.2, 00:25:04, Serial0.2
> [110/74] via 170.100.65.3, 00:25:04, Serial0.2
>C 170.100.65.0/24 is directly connected, Serial0.2
>C 170.100.1.0/24 is directly connected, Serial0.1
>O 170.100.42.0/24 is a summary, 00:25:01, Null0
>R 1.0.0.0/8 [120/1] via 170.100.42.242, 00:00:10, Ethernet0
>R 20.0.0.0/8 [120/1] via 170.100.42.242, 00:00:10, Ethernet0
>O*E2 210.0.5.0/24 [110/20] via 170.100.65.3, 00:25:07, Serial0.2
>I 205.15.150.0/24 [100/14000] via 170.100.1.4, 00:00:54, Serial0.1
>
>Here is the routing table on R4
>
>Gateway of last resort is not set
>
> 170.100.0.0/24 is subnetted, 3 subnets
>C 170.100.200.0 is directly connected, Ethernet0
>I 170.100.65.0 [100/10476] via 170.100.1.5, 00:01:13, Serial0
>C 170.100.1.0 is directly connected, Serial0
> 1.0.0.0/24 is subnetted, 1 subnets
>C 1.1.1.0 is directly connected, Loopback0
>B 205.15.150.0/24 [20/0] via 170.100.200.7, 00:36:34
>
>
>
>Also - does anyone understand how to use the defualt-information command
>under igrp?
>It says it requires an access-list - but the examples in the docs do not
>use access-lists.
>
>Thanks,
>
>Julie Ann
>------------------------------------------------------------------------
> Julie Ann Connary
> | | Network Consulting Engineer
> ||| ||| Federal Support Program
> .|||||. .|||||. 13635 Dulles Technology Drive,
>Herndon VA 20171
> .:|||||||||:.:|||||||||:. Pager: 1-888-642-0551
> c i s c o S y s t e m s Email: jconnary@cisco.com
>
>------------------------------------------------------------------------
>
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