How to calculate "queue-limit" in LLQ?

[unitech]

On STM-16 link where up to 55% of link bandwidth use by PQ in LLQ, and assuming packet size is 126 bytes, how to determine the number of packet in this queue?

Thanks for any help!

[vmoopeung]

The following formula is what the byte count should be based on:

byte count = (queue limit, no. of packets) x (size of each packet, in bytes)

hence,

queue limit = byte count/size of each packet

Determining the size of the individual packets will require some type of sniffer output as there are no router "show" commands that will tell you the individual packet size coming from a certain protocol.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/qos_c/qcpart2/qcconman.htm#xtocid57015