From: Thomas Surber (thomas@xxxxxxxxxx)
Date: Thu Dec 07 2000 - 22:45:18 GMT-3
I know this question and what the guy is not telling you is that there was a
RIP to OSPF happening else where in the network and THAT /24 from RIP is the
one you put in as the default network, it gets sent to R4 and poof it all
works.
Thomas
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Tony
Olzak
Sent: Thursday, December 07, 2000 16:59
To: Robert DeVito; fningham@worldnet.att.net
Cc: ccielab@groupstudy.com
Subject: Re: Wording
This is because the IGRP-enabled link is using a 24-bit network mask. This
means IGRP will ONLY accept 24-bit mask routes from 134.1.x.x networks.
Tony
----- Original Message -----
From: "Robert DeVito" <robertdevito@hotmail.com>
To: <fningham@worldnet.att.net>
Cc: <ccielab@groupstudy.com>
Sent: Thursday, December 07, 2000 7:43 AM
Subject: Re: Wording
> Going back to the following scenerio:
>
> Configure IGRP between R3 and R4. Ensure that all routers in the
> network can access all interfaces on all the routers. Configuring
> ONLY R3, send a default route to R4 without using static routes,
> route maps, or summary addresses.
>
>
> R2 (E0 - 134.1.32.1/20)
> |e0
> | OSPF Area 0
> |e0
> R3 (E0 - 134.1.32.2/20, S0 - 134.1.31.1/24)
> \s0
> \ IGRP
> \s0
> R4 (s0 - 134.1.31.2/24)
>
> I have having a hard time getting the 134.1.32.X network to be
redistributed
> into IGRP. Here are my configs. I am asumming that after I am able to get
> the 134.1.32.X network to redistribute into IGRP, I would add the "ip
> default-netw 134.1.32.0" command to r3, then redistribute IGRP into OSPF
in
> R3, and that problem should be solved?????
>
> Thanx in advanced.
>
> R3 Config:
> interface Ethernet0/0
> ip address 134.1.32.2 255.255.240.0
> ip irdp
> ip irdp multicast
> ip irdp preference 600
> !
> interface Serial0/0
> ip address 134.1.31.1 255.255.255.0
> no ip mroute-cache
> clockrate 2000000
> !
> router ospf 1
> summary-address 134.1.32.0 255.255.255.0
> redistribute connected
> network 134.1.32.0 0.0.0.255 area 0
> default-metric 100
> !
> router igrp 1
> redistribute ospf 1
> passive-interface Ethernet0/0
> network 134.1.0.0
> !
> ip classless
> !
> Gateway of last resort is not set
>
> 134.1.0.0/16 is variably subnetted, 4 subnets, 3 masks
> O IA 134.1.3.0/24 [110/74] via 134.1.32.1, 00:00:28, Ethernet0/0
> C 134.1.31.0/24 is directly connected, Serial0/0
> C 134.1.32.0/20 is directly connected, Ethernet0/0
> O IA 134.1.48.0/25 [110/84] via 134.1.32.1, 00:00:28, Ethernet0/0
> 150.100.0.0/24 is subnetted, 1 subnets
> O E2 150.100.1.0 [110/500] via 134.1.32.1, 00:00:28, Ethernet0/0
> I 150.200.0.0/16 [100/8976] via 134.1.31.2, 00:00:11, Serial0/0
>
> Router 4 Config:
> ip subnet-zero
> no ip domain-lookup
> !
> interface Loopback0
> ip address 150.200.2.1 255.255.255.0
> !
> interface Serial0
> ip address 134.1.31.2 255.255.255.0
> no fair-queue
> !
> interface Serial1
> no ip address
> shutdown
> !
> interface TokenRing0
> no ip address
> shutdown
> !
> router igrp 1
> network 150.200.0.0
> network 134.1.0.0
> !
> ip classless
> !
> Gateway of last resort is not set
>
> 150.200.0.0/24 is subnetted, 1 subnets
> C 150.200.2.0 is directly connected, Loopback0
> 134.1.0.0/24 is subnetted, 2 subnets
> I 134.1.3.0 [100/52100] via 134.1.31.1, 00:00:52, Serial0
> C 134.1.31.0 is directly connected, Serial0
> I 150.100.0.0/16 [100/52100] via 134.1.31.1, 00:00:52, Serial0
>
> **** As you can see, I can see other routes that are being redistributed
> into IGRP from OSPF, I just can not see the 134.1.32.X network.
>
> ----Original Message Follows----
> From: Fred Ingham <fningham@worldnet.att.net>
> Reply-To: fningham@worldnet.att.net
> To: Robert DeVito <robertdevito@hotmail.com>
> Subject: Re: Wording
> Date: Wed, 06 Dec 2000 20:23:22 -0500
>
> Or better yet an OSPF route that is a different subnet. For instance if
> you configured r3-r4 link with 172.16.65.0/24
> you couldn't use 172.16.0.0 as the default network. If the link
> between r3-r2 were 172.17.x.y then you could use 172.17.0.0 as the
> default network.
>
> The network must exist in the routing table (of r3) as a connected,
> static, or learned route. You could configure 10.1.1.3 as a loopback on
> r3 and use 10.0.0.0 as the default network for instance. Remember to
> advertise the default network under IGRP on r3 with a network statement.
>
> Fred.
>
> Robert DeVito wrote:
> >
> > Fred,
> >
> > I am assuming if I can not use the classless address of the link
> > between R3 and R4 as the "default-network", I would have to append the
> > ip default-network command to a OSPF learned network? i.e. the link
> > between R3 and R2??
> >
> > Robert
> >
> > ----Original Message Follows----
> > From: Fred Ingham
> > Reply-To: Fred Ingham
> > To: Robert DeVito , ccielab@groupstudy.com
> > Subject: Re: Wording
> > Date: Wed, 06 Dec 2000 17:05:49 -0500
> > You also would have to redistribute IGRP into OSPF on r3 to ping the
> > R4
> > addresses from r2. Best to use route maps on both OSPF and IGRP
> > redistributions to prevent routing loops. Default network is the way
> > to
> > get a default into IGRP. The default network should be in r3's routing
> > table and not the same classful address configured on r4. r4 should
> > have the ip classless command and check that the r4 interface to r3
> > has
> > split horizon enabled.
> > Fred.
> > Robert DeVito wrote:
> > >
> > > R2
> > > |
> > > | Area 0
> > > |
> > > R3-------------------R4
> > >
> > > OSPF is configured between R2 and R3 (working good). I am trying to
> > > figure out what they mean below and how would you do that? Would you
> > > configure IGRP between R3 and R4 and then redistribute OSPF into
> > IGRP
> > > and use the " ip default-network" in R3?
> > >
> > > Configure IGRP between R3 and R4. Ensure that all routers in the
> > > network can access all interfaces on all the routers. Configuring
> > > ONLY R3, send a default route to R4 without using static routes,
> > route
> > > maps, or summary addresses.
> > >
> > > Thank you,
> > > Robert DeVito
> > >
> > >
> > ----------------------------------------------------------------------
> > > Get more from the Web. FREE MSN Explorer download :
> > > http://explorer.msn.com
> > >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:26:00 GMT-3