From: David Luu (wicked01@xxxxxxxxxxxxx)
Date: Sun May 19 2002 - 01:22:10 GMT-3
area 4 range 135.1.20.0 255.255.255.0
At 11:29 PM 5/18/2002 -0400, Ludwig A. Morales wrote:
>I just posted something with the same question (dont know why didt ge
>trough)
>
>But basically i have your same concern there's the need to summarize the
>/22 networrk in to a /24 so that the igrp process running on R5 accepts the
>135.1.20.0 route but i dont think the propose solution does this since
>summary address command is use ti summarize externar advertisemtns incoming
>form another AS (or so i thougth)
>
>
>This was my post:
>
>Can someone hint me here!! I'm running ospf and redistributing it to igrp
>from an ASBR connected in area 4, the igrp domain does not receive the
>135.1.20.0/22 network since it Ethernet has a /24 subnet (I now that) now my
>question is how do I summarize the 20.0/22 network to a /24 range son that
>IGRP sees the advertisement, even though my understanding was that the
>summary-address command was used to summarize incoming updates from another
>AS in to OSPF I used this solution as stated in fatkids configurations (Ohh
>this is fatkids 502 expert redistribution lab) but still does not work. I
>was able to summarize all other /22 networks located in other areas with the
>area range command (but that was because this was interarea summarization)
>but HOW DO I SUMMARIZE TO OTHER AS?
>
>Thanks a lot for your help
>
>PS I posted my configs (omitted useless info. unconfigured interfaces
>etc..)
>
>
>Network 135.1.0.0
>
> R5 (igrp) 1.5/24 eth0-----------eth0 1.4/24 (igrp) R4 (OSPF area4) .20.0
>/22
>
>
>R5
>
>interface Loopback5
> ip address 135.1.15.5 255.255.255.0
>!
>interface Ethernet0
> ip address 135.1.1.5 255.255.255.0
>!
>interface Serial0
> no ip address
> shutdown
>!
>router igrp 100
> network 12.0.0.0
> network 135.1.0.0
>!
>
>C 192.19.15.0/24 is directly connected, Serial1
> 135.1.0.0/24 is subnetted, 8 subnets
>I 135.1.4.0 [100/156370] via 135.1.1.4, 00:00:36, Ethernet0
>I 135.1.2.0 [100/156370] via 135.1.1.4, 00:00:36, Ethernet0
>I 135.1.3.0 [100/156370] via 135.1.1.4, 00:00:36, Ethernet0
>C 135.1.1.0 is directly connected, Ethernet0
>I 135.1.14.0 [100/1600] via 135.1.1.4, 00:00:36, Ethernet0
>C 135.1.15.0 is directly connected, Loopback5
>I 135.1.13.0 [100/156370] via 135.1.1.4, 00:00:37, Ethernet0
>I 135.1.100.0 [100/156370] via 135.1.1.4, 00:00:37, Ethernet0
>
>****************************************************************************
>******************
>
>R4
>interface Loopback4
> ip address 135.1.14.4 255.255.255.0
>!
>interface Ethernet0
> ip address 135.1.1.4 255.255.255.0
>!
>interface Serial0
> ip address 135.1.20.1 255.255.252.0
> encapsulation x25
> ip ospf network point-to-multipoint
> ip ospf priority 0
> x25 address 111
> x25 map ip 135.1.20.3 444 broadcast
> x25 map ip 135.1.20.4 555 broadcast
>!
>router ospf 100
> router-id 4.4.4.4
> log-adjacency-changes
> summary-address 135.1.20.0 255.255.255.0
> redistribute igrp 100 subnets
> passive-interface Ethernet0
> network 135.1.20.0 0.0.0.255 area 4
>!
>router igrp 100
> redistribute ospf 100
> passive-interface Loopback4
> passive-interface Serial0
> network 135.1.0.0
> default-metric 64 20 255 1 1500
>!
>
> 1.0.0.0/24 is subnetted, 1 subnets
>C 1.1.1.0 is directly connected, Loopback0
> 135.1.0.0/16 is variably subnetted, 13 subnets, 3 masks
>O IA 135.1.4.0/24 [110/65] via 135.1.20.4, 00:18:43, Serial0
>O IA 135.1.2.0/24 [110/65] via 135.1.20.4, 00:18:43, Serial0
>O IA 135.1.3.0/24 [110/65] via 135.1.20.3, 00:18:43, Serial0
>O IA 135.1.3.3/32 [110/11176] via 135.1.20.4, 00:18:43, Serial0
>C 135.1.1.0/24 is directly connected, Ethernet0
>O IA 135.1.13.3/32 [110/11176] via 135.1.20.4, 00:18:44, Serial0
>C 135.1.14.0/24 is directly connected, Loopback4
>I 135.1.15.0/24 [100/1600] via 135.1.1.5, 00:00:55, Ethernet0
>O IA 135.1.13.0/24 [110/65] via 135.1.20.3, 00:18:44, Serial0
>O 135.1.20.3/32 [110/64] via 135.1.20.3, 00:18:44,
>erial0 -----------------------> need to sumarize this to /24
>C 135.1.20.0/22 is directly connected,
> ---------------------->
>O 135.1.20.4/32 [110/64] via 135.1.20.4, 00:18:45, Serial0
>O IA 135.1.100.0/24 [110/11175] via 135.1.20.4, 00:18:45, Serial0
> [110/11175] via 135.1.20.3, 00:18:45, Serial0
>
>
>
>----- Original Message -----
>From: "David Luu" <wicked01@ix.netcom.com>
>To: "Todd Spencer" <spencertm@yahoo.com>; <ccielab@groupstudy.com>
>Sent: Saturday, May 18, 2002 9:25 PM
>Subject: Re: FATKID 502 Expert Redistribution
>
>
> > i do not believe the solution provided will work, since summary-address is
> > used to summarize going into ospf...you would need to use the command
>"area
> > 4 range 135.1.20.0 255.255.255.0" on the abr
> >
> > At 04:53 PM 5/18/2002 -0700, Todd Spencer wrote:
> > >I am trying to do the FatKid 502 Expert Redistribution
> > >Lab, and I don't understand the solution provided. I
> > >will try to briefly explain.
> > >
> > >The problem has to do with the classic VLSM to FLSM
> > >problem (IGRP/OSPF). The lab requires that OSPF area
> > >4 be configured with a /22 subnet, and the IGRP domain
> > >be configured with a /24. OSPF area 4 is using the
> > >following subnet 135.1.20.x/22 and the IGRP domain is
> > >using 135.1.1.x/24. The OSPF configuration below is
> > >taken from the solution:
> > >
> > >router ospf 1
> > > summary-address 135.1.20.0 255.255.255.0
> > > redistribute igrp 1 subnets
> > > network 135.1.14.0 0.0.0.255 area 4
> > > network 135.1.20.0 0.0.3.255 area 4
> > >
> > >I am unsure what the summary-address command is doing
> > >in this configuration. How is it able to summarize a
> > >/22 into a /24? How is the /22 subnet getting into
> > >the IGRP domain? If anyone has done this lab and can
> > >provide assistance, it would be greatly appreciated.
> > >
> > >-Todd
> > >
> > >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:59:01 GMT-3