From: Praveen Bahethi (pbahethi@xxxxxxxxxxxxxxxxxxx)
Date: Sun Jul 28 2002 - 18:10:20 GMT-3
Paul,
Frank is right..
I just wanted to add that when you change the auto cost in ospf it only
affects that router's ospf cost, thus if you want similar costs across the
environment you have to go to all the routers in the OSPF domain.
V/R,
Praveen
----- Original Message -----
From: "Frank B" <frank@buff-net.com>
To: "'Casey, Paul (6822)'" <Paul.Casey@o2.com>
Cc: <ccielab@groupstudy.com>
Sent: Sunday, July 28, 2002 2:10 PM
Subject: RE:
> Seems you need to ensure ospf assigns the appropriate cost to a gigE
> interface. By default ospf calculates cost with:
>
> Ref_bw/bw=cost where ref-bw=10**7 (10 to the 7th or 100mbps)
>
> So, FE and GigE, OC3, etc... will all have the cost of 1 (must be a
> whole number.) Tweaking the bandwidth command here obviously won't
> work.
>
> So you must change the ref-bw with the router config command:
>
> auto-cost reference-bandwidth n (I think n is in Mbps...but don't trust
> me. Look it up!)
>
> Good luck and aloha, Frank
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Casey, Paul (6822)
> Sent: Sunday, July 28, 2002 8:26 AM
> To: 'ccielab@groupstudy.com'
> Subject:
>
> Can someone help me wirth the following secenrio question.
>
>
> A gigibit ethernet module is being added to a router,
> Configure ospf so it can identify between different types of high speed
> interface type's
>
>
> Any help appreciated.
> Kind regards.
> Paul.
>
>
>
>
>
> Paul Casey
> O2 Ireland
> Core Network Eng'g Team
> 76 Lower Baggot Street, Dublin 2.
> > * Mob : +353 86 8143310
> E-mail: paul.casey@o2.com
>
> PLEASE NOTE THAT THE ABOVE CONFIDENTIAL INFORMATION I
>
> > See what you can do www.o2.ie
> >
>
>
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