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
[Read More]One of the cool things about MPLS is its versatility.
In this post i will show how its possible for a service provider to support legacy frame-relay installations without actually having any frame-relay switches.
I will establish an MPLS core and show how a customer with three sites, one hub site and two spoke sites, will never even know that the core is running MPLS and not end-to-end frame-relay.
[Read More]Link optimization on frame-relay.
Using frame-relay, bandwidth is especially a concern.
It is possible to optimize this bandwidth in several ways.
I will concentrate this post about compression and fragmentation.
First off, with compression on frame-relay there several methods of accomplishing this.
[Read More]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.
[Read More]Im pretty much back at my lab practice again. Doing Narbik’s labs.
Last 5-6 labs is all about frame-relay, including FRTS, PIPQ (Which i never encountered before), fragmentation and compression. All good stuff. As someone on twitter mentioned, its really amazing that frame-relay is still on the lab exam. You would think that they would remove that topic and introduce some more MPLS. However, i guess that frame-relay is a good topic to do exam tasks as there are soo many small details.
[Read More]