From: D.H. Williams (draythw@gmail.com)
Date: Mon Jun 26 2006 - 11:43:21 ART
Bob,
below in my ACL OSPF, I meant 4.4.4.4, not 2.2.2.2; typo, but I did verify
that on my lab last night. I probably made a type somewhere along the way
last night, twas getting late; I'll go back to the ole' drawing board when
I get an opportunity and lab it up.
Thanks for your help!
On 6/26/06, Bob Sinclair <bobsinclair@frontiernet.net> wrote:
>
> Drayton,
>
> As I understand your scenario, the SOURCE in the OSPF distance command
> would need to be the RID of the preferred ABR. The following sequence works
> for me, where 172.16.102.1 is the RID of my preferred ABR, and
> 172.16.101.0/24 is the route in question.
>
> router ospf 1
> log-adjacency-changes
> network 172.16.0.0 0.0.255.255 area 10
> distance 109 172.16.102.1 0.0.0.0 OSPF
>
> ip access-list standard OSPF
> permit 172.16.101.0
>
> R6#sh ip route 172.16.101.0
> Routing entry for 172.16.101.0/24
> Known via "ospf 1", distance 109, metric 139, type inter area
> Last update from 172.16.45.4 on Ethernet0, 00:03:47 ago
> Routing Descriptor Blocks:
> * 172.16.45.4, from 172.16.102.1, 00:03:47 ago, via Ethernet0
> Route metric is 139, traffic share count is 1
>
> HTH,
>
>
> Bob Sinclair
> CCIE #10427, CCSI 30427
> www.netmasterclass.net
>
>
> ----- Original Message -----
> *From:* Drayton Williams <draythw@gmail.com>
> *To:* ccielab@groupstudy.com
> *Sent:* Monday, June 26, 2006 8:45 AM
> *Subject:* OSPF distance manipulation
>
>
> Hey guys,
>
> Quick question on an issue I had last night doing a lab, here is the
> setup;
> hub router (r1) with two spokes (r2)(r3); the spoke routers both have
> hdlc
> connections to r4; running ospf area 10 between r1, r2, and r3 using ip
> ospf point-to-point between hub and spokes (obviously r2 and r3 going to
> hub are in different subnets). The hdlc connection between r2, r3, and
> r4
> are in ospf area 0;
>
> from r1, I'm getting two routes to get 4.4.4.4 on r4 (just a loopback
> interface i'm advertising into area 0 there); one from r2 and one from
> r3;
> i'm trying to manipulate the administrative distance on r1 (since it
> should
> only be locally significant) to prefer going to r2 as apposed to r3 to get
> to this route; here is what i entered on r1;
>
> router ospf 1
> distance 109 2.2.2.2 0.0.0.0 OSPF
>
> ip access-list standard OSPF
> permit 2.2.2.2 0.0.0.0
>
>
> Oddly enough, I could never get the distance to change, even after
> clearing
> the ospf process and actually rebooting all 4 routers. My question, when
> doing the distance command for ospf, is the "source ip" in the distance
> command the router-id of the advertising router in ospf? I thought it
> was,
> I also tried the following
>
> distance 109 10.1.1.2 0.0.0.0 OSPF
>
> where 10.1.1.2 is the serial ip; again, the distance never changed; Any
> comments on this would be appreciated. Sorry I can't include the show ip
> route ospf, and show ip ospf data, commands, as I'm sending this from a
> location where I don't have access to my rack.
>
> Thanks for your help in advance!
>
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