WRED Maximum-threshold's default value

[joshua.abraham]

The above-said value, according to docs is 40. Should it not be 100?

Why would we want to tail-drop when Average-Queue-Size reaches 40 % of maximum queue size, should it not be 100%?

[owillins]

For more information on WRED and its working please refer the following document.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/qos_c/qcpart3/qcconavd.pdf

[joshua.abraham]

Making a serial port to FIFO, makes the queue-size (max packets it can contain) to 40 packets. And FIFO is the queuing method on all non-default classes in MQC. This is the reason. Thanks!