Policing in QOS

[swatikhare]

If my class map is set as listed below -

Bandwidth is 8 Meg, however I am policing at 110 Kbps. So happens to the unused bandwidth? Will it be shared with default?

Class-map: af3_output (match-any)
          0 packets, 0 bytes
          5 minute offered rate 0 bps, drop rate 0 bps
          Match: ip dscp xx xx xx
            0 packets, 0 bytes
            5 minute rate 0 bps
          Queueing
            Output Queue: Conversation 266
            Bandwidth 8000 (kbps)
            (pkts matched/bytes matched) 0/0
        (depth/total drops/no-buffer drops) 0/0/0
             exponential weight: 8
             mean queue depth: 0

          police:
              cir 100000 bps, bc 84500 bytes, be 169000 bytes
            conformed 0 packets, 0 bytes; actions:
              set-dscp-transmit af31
            exceeded 0 packets, 0 bytes; actions:
              set-dscp-transmit af31
            violated 0 packets, 0 bytes; actions:
              set-dscp-transmit af32
            conformed 0 bps, exceed 0 bps, violate 0 bps

[Akash Agrawal]

Hi,

I have not seen such policy applied on any customer network but If this config is supported yes remaining bandwidth will be available for the class-default. And in this config traffic is not rate-limited to 100 kbps since exceed and violate actions are transmit and are being used to set dscp value to a different value.

So traffic on class af3_output may go till 8mbps or even till link bandwidth and if it is not being utilized completely remaining bandwidth will be available to class-default

You can also use below "Ask the expert" event for QoS to further queries related to QoS.

https://supportforums.cisco.com/discussion/12259571/ask-expert-quality-service-qos-cisco-ios-routers

Regards,

Akash

[swatikhare]

Thanks Akash