From: joe_astorino@comcast.net
Date: Tue Mar 03 2009 - 12:32:55 ARST
I'm not following you Nadeem. From what I remember, OSPF calculates cost using the formula (Reference Bandwidth / Configured Bandwidth). Metric would be the cumulative cost.
----- Original Message -----
From: "Nadeem Ansari" <nadeem.ansari574@gmail.com>
To: "joe astorino" <joe_astorino@comcast.net>
Cc: "sony darrel" <sonydarrel@gmail.com>, "Cisco certification" <ccielab@groupstudy.com>
Sent: Tuesday, March 3, 2009 9:29:33 AM GMT -05:00 US/Canada Eastern
Subject: Re: OSPF metric issue
Continuing to my last mail that the behavior is when i entered 1000 as referance bandwidth
Regards
Nadeem
On Tue, Mar 3, 2009 at 7:58 PM, Nadeem Ansari < nadeem.ansari574@gmail.com > wrote:
Friends,
They key to this confision is that how OSPF calculate metric when we configure auto-cost reference bandwith, As i had observed that it increases the cost for a 128 Kbps Link from 781 to 7812 as compare to its default behavior, and some how I am not able to find out that what formulae it uses after auto-cost reference bandwith command
Regards
Nadeem
On Tue, Mar 3, 2009 at 7:32 PM, < joe_astorino@comcast.net > wrote:
Strange that it is exactly 10 higher than the largest 16 bit number. Did you try clearing the OSPF process?
----- Original Message -----
From: "sony darrel" < sonydarrel@gmail.com >
To: "Cisco certification" < ccielab@groupstudy.com >
Sent: Tuesday, March 3, 2009 5:51:31 AM GMT -05:00 US/Canada Eastern
Subject: OSPF metric issue
Hi Experts,
10.1.1.2
I have 3 routers 10.1.1.1 ----A--------B---------- C-10.3.3.3, am running
ospf on it,they all r connected through gigabit interface, i have configured
auto-cost reference bandwith 10000
MBps 10.3.3.2
Because in future i will installed 10gig . Definately the cost is 10 as the
interface is gigabit.But when i c in the sh ip route the metric for network
10.1.1.1 is 65545,from where
did it came can anybody help me.It is irritating me,
when i c sh ip os interfce the cost what i c is 10 on all routers but when
i c sh ip route the metric for network 10.1.1.1 is 110/65545
the metric should be 20 ,the distance from A to B and from B to C????
correct me if am wrong.
this problem is strange for me.
Awaiting for ur reply friends
Thanks,
Blogs and organic groups at http://www.ccie.net
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