From: Ivan (limmti@yahoo.com.sg)
Date: Mon Apr 07 2003 - 06:28:13 GMT-3
Hi Robert,
Its correct. The auto-cost value is in megabit. Refer to OSPF command reference for detail.
Ivan Lim
Robert Yee <robert@bluespud.com> wrote:Hi All,
I'm reading through the OSPF section in Doyle's Routing TCP/IP Vol I. (again) and on page 425, it talks about 'ospf auto-cost reference bandwidth'. I did some further looking on CCO and I think I need some clarification.
He writes: "The reference bandwidth(10^8) creates a problem for some modern media with bandwidth higher than 100M (such as OC3 and GigE). 10^8/100M=1, meaning that higher bandwidths calculate to a fraction of 1, which is not allowed. Beginning with 11.2, cisco has remedied this with the command OSPF auto-cost reference-bandwidth, which allows the default refenrence bandwidth to be changed."
This explains it pretty well and I would expect to change the reference-bandwidth with exponential numbers.
CCO says that the default reference-bandwidth is 100 with a range between 1 and 4,294,967. Would it be correct to assume that this 100 is in Megabits and not bits?
So if I had a GigE interface the lowest default reference-bandwidth I could use is 1000?
Thanks.
Yahoo! Biztools
- Promote your business from just $5 a month!
This archive was generated by hypermail 2.1.4 : Thu May 01 2003 - 13:35:48 GMT-3