[nsp] Per-VP statistics on ATM interfaces

[Blaz Zupan]

We are aggregating our ADSL customers on a 7206VXR STM-1 ATM interface. We are
using routed bridge encapsulation. Each customer is delivered on a single VC,
while the link to each DSLAM is VP switched to us through the telco ATM
switches. The VP's are rate limited by the telco to the contracted bandwidth.
We would like to keep an eye on the utilisation of the VP's, so that we don't
oversubscribe them too much. Currently the only way I see is to use mrtg and
add together the utilization of all the subinterfaces belonging to the same
VP. Obviously, this isn't scalable. Another solution would be to use
multipoint interfaces and have an interface for each DSLAM, but this solution
is not possible when using RBE. Reading the per-VP statistics from the ATM
switches isn't an option, as they are managed by the telco. Anybody have any
other suggestions?