Re: OSPF md5 authentication

From: Nick Shah (nshah@xxxxxxxxxxxxxx)
Date: Thu Jul 04 2002 - 20:47:43 GMT-3


   
Kym,

Is it safe to assume that the frame cloud is area 0 (or atleast in a single
area)? In that case, we have something like

       R1
        |
------------
| |

R2 R3

R1 is the hub router, running multipoint interface, R2 & R3 physical
interfaces.
Change type on R1 to non-broadcast
define ospf interface prio on R2 & R3 to be 0
Change ospf interface prio on R1 to be 1 or more
Apply neighbor commands on R1 (this is required, since we are running
non-broadcast mode)

Adjacency is formed,
specify area 0 authentication on all three, specify authentication string on
R1's ,R2's & R3's interface.

Should Work. If it doesnt, what does show ip ospf say (the second line under
Area 0, if it mentions authentication).

rgds
Nick
----- Original Message -----
From: "kym blair" <kymblair@hotmail.com>
To: <ccielab@groupstudy.com>
Cc: <tlarus@cox.net>; <nshah@connect.com.au>
Sent: Friday, July 05, 2002 8:03 AM
Subject: OSPF md5 authentication

> This has been discussed several times, but I haven't see a working
solution
> and hope someone has it:
>
> --MD5 authentication in area 0 over Frame Relay
>
> --hub router (multipoint subinterface; okay to change the ospf network
type)
>
> -- two spoke routers (physical serial interface; cannot change the
interface
> type from non-broadcast [this means that the three routers must elect DR;
> you may set the priority to 0 on the spoke routers]).
>
> Adjacencies without authentication, but when a message-digest-key is added
> to the three, the hub router forms an adjacency with only one of the
spokes.
> Generates a mismatch key error with the second spoke router.
>
> If you know the trick to get the hub to form adjacencies with both spokes,
> I'd sure appreciate hearing it.
>
>
> Thanks,
>
> Kym
>
>
>
>



This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:36:19 GMT-3