Bandwidth Statements on Serial Interfaces

[djohnson]

What is the Cisco best practice for adding or not adding a bandwidth statement to the serial interface on a router

[Edison Ortiz]

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Network%20Infrastructure&topic=WAN%2C%20Routing%20and%20Switching&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.2cbe7f30

[Richard Burts]

Don

The bandwidth of the interface specified using the interface bandwidth command is used for a couple of things: routing protocols of EIGRP and OSPF use the bandwidth in calculating their metric, calculation of link busy (reported in the show interface command and possibly in other network monitoring/management software) uses bandwidth, EIGRP will throttle its updates to use no more than 50% of bandwidth by default. So if you have a serial interface whose actual bandwidth is different from the default bandwidth value for the interface it is probably best to configure a more accurate value of the bandwidth.

HTH

Rick