From: asadovnikov (asadovnikov@comcast.net)
Date: Fri Jul 11 2003 - 20:20:23 GMT-3
On Ethernet (or FastEthernet) interface router will use the actual speed
(either negotiated or hard set with "speed" command) to calculate the
bandwidth.
On other interfaces, i.e. Serial it will use default speed the interface is
capable of (i.e. 1544 kbits/sec). Clock rate does not matter.
The above can be overwritten with interface "bandwidth" command.
This speed is used for everything on L3, and can be viewed with "show
interface"
For OSPF (and some other things) there is protocol specific way to adjust it
"ip ospf cost".
Best regards,
Alexei
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
JenBell
Sent: Thursday, July 10, 2003 9:56 PM
To: ccielab@groupstudy.com
Subject: Fast vs Normal with swerved idea
Hi People
Got a question...very dumb one at that but with one brain cell you can't
blame
for not finding a solution to a minor situation.
R1 has a Fastethernet port which connects to R2 Ethernet which is a 10MB
link.
How can I mimic this setting on serial links? Now, R1's FA 0/0 is running at
10MB obviously but does this effect say the cost of say OSPF and what is
that
effect on the cost?
Basically...I am asking that while the protocol might know that 10MB is the
bandwidth does it also know that the interface is capable of 100MB and use
this as a factor when calculating the cost.
Finally....where do protocols that take interface bandwidth into
consideration
when calculating metrics actually get the bandwidth from? Inside the router,
would the protocol do a "sh int fa0/0" to get the value or would it simply
get
it from running config.
Thanks for your help.
Somebody please help me.....
.
Jennifer Bellucci
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