I mentioned this in a previous email but it appears that some of my responses from yesterday either didn't make it to the list or they arrived quite late.
The default OSPF cost for an interface is 10^8 / Bandwidth. In this case, 'bandwidth' is the current setting of that parameter regardless of whether it's set at the default or not. If you tweak this parameter you will alter the OSPF cost. HTH, John >>> "Kevin Cullimore" 5/14/02 1:14:24 AM >>> An opportunity for misunderstanding that underlies this thread involves the following: DEFAULT costs are calculated for cisco OSPF interfaces based upon traditional bandwidth values associated with interface types. What's not clear is how the ospf process does this. Does anyone have any insight? ----- Original Message ----- From: "Priscilla Oppenheimer" To: Sent: Monday, May 13, 2002 4:42 PM Subject: Re: Bandwidth command!! [7:44055] > Setting the bandwidth would affect OSPF also. This isn't necessarily a bad > thing, though. You probably wouldn't be running both routing protocols on > the same interface, for one thing. But if you were, then you would want > them both to use a metric that's based on the actual bandwidth for the path. > > That sounds like good advice from the CCIE Practical Studies book. It > brings up a subtle point, in addition to the one you pointed out. The > outgoing interface may have a different level of bandwidth than the > incoming interface of the router on the other end of a circuit, in some > implementations. A good example might be a Frame Relay hub-and-spoke > design. The hub has a larger pipe than the spoke. > > Priscilla > > At 12:54 PM 5/13/02, Rajesh Kumar wrote: > >Hi all, > > > >CCIE Practical studies - Vol I book - EIGRP chapter says that the > >bandwidth command used in serial interfaces should be set to a value > >equal to the remote port speed to which the serial interface is > >connected to. > > > >For ex : > > > > RTR 1 ---------------------------------- RTR 2 > > > > 1.544 Mbps 64 Mbps > > > > > > > > int > >s0 int s0 > > bandwidth 64 > >bandwidth 1544 > > > > > > > > > > > > > >My question is - Is it not going to affect the other routing protocols > >like OSPF where we set the bandwidth decides the cost of the outgoing > >interfaces. > > > >Can somebody shed some light on this please? > > > > > >Thanks, > >Rajesh > ________________________ > > Priscilla Oppenheimer > http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44224&t=44055 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
