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QoS

A collection of 3 posts

Generate DSCP marked pings

Generate DSCP marked pings

Today it was useful to confirm a switch was passing DSCP marked packets as expected and handling 'ef' marked packets. To do this on a cisco switch we can use the extended ping feature and set the Type of Service (ToS) to a decimal value that is equivalent to the

QoS fields

The QoS fields used by the network device depend on the capabilities of the device and the QoS deployments of the network. Below is a little info about a few of these fields. This post will be edited over time with more info added. A table showing some of the

IP Precedence DSCP and CoS relationships

IP Precedence DSCP and CoS relationships

As part of studying the 642-642 QoS exam course is seems quite important to understand the relationship between the various ways of marking traffic. Below are some notes I've made so far about these relationships. This is note a post about the inner working of the various PHBs or their