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Traffic Shape Queue

hallo

someone can tell me more about the output from "show traffic-shape queue" on a cisco1751 configured for FR traffic-shaping ?

I did not find sufficient info on web docs.

This is a sammple output :

arcugnano1751-voip02#sh traffic-shape queue

Traffic queued in shaping queue on Serial0/0.50 dlci 50

Queueing strategy: weighted fair

Queueing Stats: 15/600/64/29170 (size/max total/threshold/drops)

Conversations 1/33/32 (active/max active/max total)

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 152 kilobits/sec

(depth/weight/total drops/no-buffer drops/interleaves) 15/32384/29170/0/0

Conversation 18, linktype: ip, length: 1500

source: 85.18.13.146, destination: 217.220.107.58, id: 0x1AAD, ttl: 239, prot: 50

Traffic queued in shaping queue on Serial0/0.51 dlci 51

Queueing strategy: weighted fair

Queueing Stats: 11/600/64/1990 (size/max total/threshold/drops)

Conversations 1/13/32 (active/max active/max total)

Reserved Conversations 1/0 (allocated/max allocated)

Available Bandwidth 26 kilobits/sec

(depth/weight/total drops/no-buffer drops/interleaves) 12/68/1990/0/0

Conversation 41, linktype: ip, length: 132

source: 217.220.107.58, destination: 85.18.13.146, id: 0x90FE, ttl: 253, prot: 50

+++++

For example how the router computes the available bandwidth 152kbps or 26kbps ?

best regards

francesco

1 REPLY

Re: Traffic Shape Queue

Hi,

available bandwidth does refer to the bandwidth available for a policy-map, i.e. LLQ or CBWFQ. By default this is 75% of the link bandwidth. So I would assume you have 200 kbps and 35 kbps CIR?

The recommendation would be to configure "bandwidth xx" with xx being the CIR on your subinterface.

The rest of the numbers refer to WFQ.

"Queueing strategy: weighted fair "

"Queueing Stats: 11/600/64/1990 (size/max total/threshold/drops) "

11 - current number of packets in the queueing system

600 - maximum number of packets in the queueing system (more would be dropped)

64 - CDT congestive discard threshold, if more than 64 packets are in the queueuing system the most aggressive flows would get packets dropped

1990 - number of packets dropped since last clearing of interface counters

"Conversations 1/13/32 (active/max active/max total)"

1 - number of current flows

13 - maximum number of simultaneous flows since last clearing of counters

32 maximum number of allowed flows

"(depth/weight/total drops/no-buffer drops/interleaves) 12/68/1990/0/0

Conversation 41, linktype: ip, length: 132

source: 217.220.107.58, destination: 85.18.13.146, id: 0x90FE, ttl: 253, prot: 50"

currently there is a packet queued with the following IP header: source: 217.220.107.58, destination: 85.18.13.146, id: 0x90FE, ttl: 253, prot: 50

Hope this helps! Please rate all posts.

Regards, Martin

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