From: Ilya Mazhara (willy@xxxxxxxxxxxxxxxx)
Date: Thu Jan 18 2001 - 07:26:36 GMT-3
There's no special issues about default-net and OSPF->IGRP
redistributing.
Sen me u'r configs (R5,R4) & sh ver.
Sh ip ospf int & sh ip int are too.
"Connary, Julie Ann" wrote:
>
> 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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