QoS

In this short piece i would like to show how Frame-Relay PVC bundles work.

A PVC bundle is exactly what the name says. Its a bundle of PVC’s, with each PVC handling a certain Precedence, MPLS EXP or DSCP.

A requirement for the PVC bundle is that all IP Precedence or DSCP values will be handled by one of the PVC’s, so you need to set the “default” PVC unless

One of my friends told me about a feature called SPD and whether i knew about it. I didnt so i decided to read a bit more about it.

SPD stands for Selective Packet Discard. As the name implies it has something to do with discarding packets. Something that is never good.

New technology i just learned about! Its called PIPQ, and stands for PVC Interface Priority Queueing.

As the name implies, its a Queueing method, and its only for frame-relay.

It basically functions in the same way as a PQ scheme, in that it has 4 queues, high, medium, normal and low.

I was doing some lan QoS yesterday evening. Specifically i wanted to mark some packets.

As usual, i wanted to create a policy-map, referencing some class-map, and then set the IP precedence value.

I tried to get this working for like 3 hours. I was verifying the behavior using the “sh policy-map interface ” command,

Been a few days since my last post.

During that time, I have taken quite a few practice tests to gauge where im at. I am also slowly progressing through the Exam Guide.

Also, in the near future im switching over to a new hosting service. Need some features which wordpress doesnt allow me to use, such as advertising. I got a friend in germany who has a colocated server which he will provide some access to. Very grateful for this.