HI - I was wondering if there are any advantages or disadvantages to hardcoding the bandwidth statement on a MLPP interface versus letting it be set dynamically by the router.
One thing that comes to mind is service policies. If there is a service policy attached to the MLPPP interface, then the policy evaluates the interface bandwidth value when it allocates bandwidth per class based on a percentage.
Let's say there were three T1's in a bundle and a particular class was allocated 20%. This would be about 900Kbps normally. If one T1 drops out due to a circuit outage than the interface bandwidth value would automatically change to 3Mbps; in turn automatically shrinking the bandwidth available for the class to 600Kbps.
Manually setting the bandwidth attribute on the MLPPP interface would prevent this automagic from occurring.