PfR and PBR Scaling Enhancements
The PfR Scaling Improvement for Traffic Class feature introduces scaling enhancements to the number of traffic classes (TCs) that are supported on each Performance Routing (PfR) border router (BR) for the Cisco ASR 1000 Series Router. New PfR and dynamic route-map scaling improvements allow BRs to support a maximum of 20,000 traffic classes (TC) with a maximum of 500 dynamic route-map sequences. Currently only 5000 traffic classes and 32 route map entries are allowed. The following table displays the new maximum limits by route processor.
Note |
The scaling support are based on Policy Based Routing (PBR) control based traffic-classes with prefix, DSCP, and port. The support is not Network Based Application Recognition (NBAR) related. |
Route Processor |
Max no. of TCs |
Max no. of Route Map Entries |
---|---|---|
RP2/ESP40 |
20,000 |
500 |
RP1/ESP10 |
10,000 |
500 |
ESP5 |
5000 |
500 |
ASR1001 |
5000 |
500 |
ASR1001-x |
10,000 |
500 |
ASR1002-x |
20,000 |
500 |
To configure a higher maximum number of prefixes that a Performance Routing (PfR) master controller will monitor or learn, use the max prefix (PfR) command. The defaults are set at 5000 prefixes to be monitored, and up to 2500 prefixes to be learned, but both these values can be set to 20,000 depending on the type of route processor as shown in the table above.