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Policy Map Question

I just need to understand this policy map configured on my router. We are upgrading our link and  I might have change the CIR and bandwidth allocation on this policy map. The bps shown here is it bits per second or bytes per second ?

 

  Policy Map VPN_PRIORITY
    Class RESTRICTED
      Traffic Shaping
         Average Rate Traffic Shaping
         CIR 500000 (bps) Max. Buffers Limit 1000 (Packets)
    Class PREFERRED
      Bandwidth 100 (kbps) Max Threshold 64 (packets)
    Class OFFICE_VPN_ENDPOINTS
      Strict Priority
      Bandwidth 650 (kbps) Burst 16250 (Bytes)
    Class class-default
      set dscp default
      Traffic Shaping
         Average Rate Traffic Shaping
         CIR 700000 (bps) Max. Buffers Limit 1000 (Packets)

 

2 ACCEPTED SOLUTIONS

Accepted Solutions
New Member

bit per second

bit per second

Cisco Employee

Hi, If you sum all bandwidth

Hi,

 

If you sum all bandwidth assigned to each class (whether it is minimum bw or max bw) it is coming out as 1950 kbps (1.95 mbps). So looks like policy-map was designed for 2 mbps link. If you change bandwidth in same proportion to 3 mbps link , below policy-map can be used

 

500 + 700 + 100 + 650 = 1950 kbps = 1.95 mbps

750 + 1050 + 150 + 1000 = 2950 kbps = 2.95 mbps

 

  •  Policy Map VPN_PRIORITY
        Class RESTRICTED
          Traffic Shaping
             Average Rate Traffic Shaping
             CIR 750000 (bps) Max. Buffers Limit 1000 (Packets)
        Class PREFERRED
          Bandwidth 150 (kbps) Max Threshold 64 (packets)
        Class OFFICE_VPN_ENDPOINTS
          Strict Priority
          Bandwidth 1000 (kbps) Burst 16250 (Bytes)
        Class class-default
          set dscp default
          Traffic Shaping
             Average Rate Traffic Shaping
             CIR 1050000 (bps) Max. Buffers Limit 1000 (Packets)

 

Regards,

Akash

4 REPLIES
New Member

bit per second

bit per second

New Member

Thanks Walter. I just need

Thanks Walter. I just need help in understanding this policy map better. I'm okay with the class maps and the ACL's associated with it. Its just that we have upgrade our link to 3Mbps and I believe this policy map was based on the bandwidth being 1Mbps. What  I want to do is change it to reflect the bandwidth upgrade

Thanks

Cisco Employee

Hi, If you sum all bandwidth

Hi,

 

If you sum all bandwidth assigned to each class (whether it is minimum bw or max bw) it is coming out as 1950 kbps (1.95 mbps). So looks like policy-map was designed for 2 mbps link. If you change bandwidth in same proportion to 3 mbps link , below policy-map can be used

 

500 + 700 + 100 + 650 = 1950 kbps = 1.95 mbps

750 + 1050 + 150 + 1000 = 2950 kbps = 2.95 mbps

 

  •  Policy Map VPN_PRIORITY
        Class RESTRICTED
          Traffic Shaping
             Average Rate Traffic Shaping
             CIR 750000 (bps) Max. Buffers Limit 1000 (Packets)
        Class PREFERRED
          Bandwidth 150 (kbps) Max Threshold 64 (packets)
        Class OFFICE_VPN_ENDPOINTS
          Strict Priority
          Bandwidth 1000 (kbps) Burst 16250 (Bytes)
        Class class-default
          set dscp default
          Traffic Shaping
             Average Rate Traffic Shaping
             CIR 1050000 (bps) Max. Buffers Limit 1000 (Packets)

 

Regards,

Akash

New Member

Thanks Akash. This really

Thanks Akash. This really answer my query. I'm glad you helped and I have implemented this as well.Once again thank you

Regards

Usa

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