Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

Best Practices

I am in a debate with a customer, when configuring a Serial interface what is the best practice to put a bandwidth statement or not ?

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Bronze

Re: Best Practices

The bandwidth statement influences dynamic routing protocol and to some extend QoS.

By default, routing protocols will get their routing decisions based on the default bandwidth value on an interface (show interface will display this value).

If you have a link where the value is greater or lesser than what's presented under the show interface command, then entering the bandwidth statement is considered Best Practice.

3 REPLIES
Hall of Fame Super Bronze

Re: Best Practices

The bandwidth statement influences dynamic routing protocol and to some extend QoS.

By default, routing protocols will get their routing decisions based on the default bandwidth value on an interface (show interface will display this value).

If you have a link where the value is greater or lesser than what's presented under the show interface command, then entering the bandwidth statement is considered Best Practice.

Re: Best Practices

The bandwidth command is used only for metric calculations by routing protocols. It does not change interface performance.

Re: Best Practices

The best practice would be put the correct line speed as the bandwidth of the interface. Parameters like the metric calculation for dynamic protocols, QoS policies look at the configured bandwidth on the interface.

Some NMS tools too refer to the configured bandwidth on the interface.

HTH

Narayan

139
Views
10
Helpful
3
Replies
CreatePlease to create content