From: Dotun Oni (dot_oni@hotmail.com)
Date: Thu Nov 21 2002 - 04:31:19 GMT-3
Richard,
for 2-L:
interface s1
bandwidth 2000 ------------- OSPF will use a cost of 50 as follows:
Remember that you need to convert 2000kpbs to bps in calculating cost.
i.e.
cost = 100,000,000/BW(in bps) = 100,000,000/(2000 x 1000) = 50
the reverse goes for 2-P
interface s0
ip ospf cost 50 ----------reflects cost for a bandwidth of 2000kbps
HTH
D
>From: Richard Chung <richung@cisco.com>
>Reply-To: Richard Chung <richung@cisco.com>
>To: ccielab@groupstudy.com
>Subject: Bootcamp lab2; OSPF cost
>Date: Wed, 20 Nov 2002 22:59:47 -0500
>
>Hi, all,
>
>Can somebody help me to understand the config for 2-L? - Configure R6 so
>that S1 interface speed is correctly reflected in the OSPF metrics without
>using the "ip ospf cost xxx" command.
>
>Another one. 2-P: Config R8 using the "ip ospf cost xxx" such that the
>speed of the link for interface S0 is correctly reflected in the OSPF
>metrics.
>
>I understand OSPF metric = 100,000,000/BW. But why it wants to get cost=50?
>
>Thanks.
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