[c-nsp] policer in case of burstable IP transit service

[Martin T]

Hello,

in case of IP transit service, is it common to use shaper/policer? For
example customer commits to 100Mbps IP transit with burst(billed using
the 95th percentile calculation). In such case ISP has to provide at
least GigE port. Is it common to use policer with 200-400Mbps value?
Or is it more common to allow customer to burst up to port-speed? Both
seem to have their advantages and disadvantages to ISP. More traffic
consumed by customer means more profit to ISP. On the other hand ISP
needs to commit more bandwidth with their upstream provider. In
addition, such policer would provide some sort of protection and help
to avoid very high IP transit bill for customer in case of DDoS
attacks.


regards,
martin