From: David FAHED (dfahed@xxxxxxxxxxxx)
Date: Thu Oct 19 2000 - 15:40:39 GMT-3
The DLY for a loopback is 5000 + DLY for the Eth 1000 = 6000 microseconds.
The min BW is 10000 Kbit (eth)
metric = 10^7/10000 +6000/10=1600.
Hope that will help you.
Ronnie Royston wrote:
> According to Doyle, the IGRP default dalay for Ethernet links is 1000
> microseconds, 100 in IGRP terms. I have a couple of routers set up on IGRP
> and when I look at the route to R2's Lo0 interface across the ethernet link,
> I get a DLY reading of 6000 microseconds (600 in IGRP terms). My metric to
> the Lo0 int is 1600. Does anyone know how this number of 6000 is arrived
> at?
>
> big36#sho ip route 12.1.1.0
> Routing entry for 12.0.0.0/8
> Known via "igrp 1", distance 100, metric 1600
> Redistributing via igrp 1
> Advertised by igrp 1 (self originated)
> Last update from 192.1.1.2 on Ethernet0/0, 00:00:02 ago
> Routing Descriptor Blocks:
> * 192.1.1.2, from 192.1.1.2, 00:00:02 ago, via Ethernet0/0
> Route metric is 1600, traffic share count is 1
> Total delay is 6000 microseconds, minimum bandwidth is 10000 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 0
>
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