Routing > IP > IP Interface Configuration > Detail question about the bandwidth value.

 

The Help in the switch says:

Bandwidth. Specifies the configured bandwidth on this interface in Kilobits per second. This parameter communicates the speed of the interface to higher level protocols. OSPF uses bandwidth to compute link cost. Valid range is (1 to 10000000). Default value is 10000.

User Configuration

bandwidth size Set the configured bandwidth on this interface to
communicate the speed of the interface to higher level
protocols. OSPF uses the bandwidth value to compute
link cost. The range is 1–10000000.

Other references indicate that percentages of utilization of this value (in various contexts) throttles the activity on the switch.  This value seems low especially when throttling can occur at 5% 10% or 25% of this value depending on the case from what I read when compared to the capability of an individual port.

This is a gigabit switch with 10GB spf+ ports.  Are there any guidelines for setting this value?  The following seem to be interesting values:

  10 mbps network would be 10000             (or 10240? maybe the difference is overhead)

100 mbps network would be 100000         (or 102400? maybe the difference is overhead)

    1 gbps  network would be 1000000     (or 1024000? maybe the difference is overhead)

  10 gbps  network would be 10000000 (or 10240000? maybe the difference is overhead)

Does the full duplex operation come into play when setting this value?

In case of a lag being involved; is this value expected to reflect a percentage usage of the overall capability lag allocated for each vlan in this case?

Thanks