TO add my contribution:
OSPF uses Dijkstra algorithm,to choose the lowest cost link for route
selection.
The route with the lowest cost is selected as primary route.
and the costs of the local router is added to the cost required to reach the
destination.also one must remember the change in the Link Status changes the
cost of the link itself.
hope this throws some light on the route selection procedure in OSPF.
regds
KK
From: "Atif Awan" <[EMAIL PROTECTED]>
Reply-To: "Atif Awan" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>
Subject: Re: OSPF !!!
Date: Wed, 14 Jun 2000 21:32:44 -0500
Priority does not affect route selection; it is only for the DR election
process in OSPF.
Cost does affect route selection. OSPF determines the best route to a
destination based upon the metric called cost. By default cost is calculated
using the formula :
Cost = 10exp8/ bandwidth of the interface ( i think so :) )
You need to set the correct bandwidth for serial links using the bandwidth
command. Make sure you understand that the bandwidth command is just an
informational command that tells the different routing protocols about the
actual bandwidth of an interface. This command has nothing to do with the
data transmission rate.
Regards
Atif Awan
-----Original Message-----
From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Wednesday, June 14, 2000 9:22 PM
Subject: OSPF !!!
>Hello everyone!
>
>I have a bit of confusion with how to route selection occurs in OSPF by
>icluding the following commands Please shade some light on this
>
>Ok here comes
>
>does cost and priority affects route selection ??
>
>1. router ospf 3
> network 158.13.0.0 0.0.255.255 area 0
> default-information originate
> default-metric 1
> distance 85
> ip ospf cost 10
> ip ospf priority 4
>
>
>2 router ospf 3
> network 158.13.0.0 0.0.255.255 area 0
> default-information originate
> default-metric 1
> distance 85
> ip ospf cost 20
> ip ospf priority 5
>
>Thanks,
>Elias
>
>____________________________________________________________________
>Get free email and a permanent address at http://www.netaddress.com/?N=1
>
>___________________________________
>UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
>FAQ, list archives, and subscription info: http://www.groupstudy.com
>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
