I had lately to configure compressed real-time protocols (CRTP) over a Frame-relay link.
I thought that it will be good to make a tutorial about how to configure this on the Serial interfaces (with HDLC or PPP encapsulation) and on the Frame-relay interface. Another type of interface supporting this is and ISDN interface, but the configuration there is the same like in the Serial interface case.
If you were asking why I don’t configure this on a Ethernet interface, well this is because CRTP is not supported on the Ethernet interfaces. This was just an explanation for those of you who didn’t knew this. The role of CRTP is to improve communication over low bandwidth links like Serial interfaces, Frame-relay or ISDN, and that’s why is not supported on Ethernet links (who’s speed is starting at 10 Mbps).

In the following tutorial I will configure CRTP on a Serial interface with PPP encapsulation (I chose this randomly as is the same with HDLC and ISDN) and Frame-relay interface, limit the number of header compression connections and check CRTP with “show…” commands. Since the purpose of this tutorial is CRTP the connection will no be active.

See the tutorial below:

Cisco-QoS compressed real-time protocols, CRTP, frame-relay, HDLC, ISDN, ppp, RTP

Some time ago a person asked me to set the HTTP traffic to 256 kbits during weekdays from 8:00 - 16:00, to limit “the fun” in the office while other are working. In theory I’m against this type of policy, because if you have a team of network engineers and they have to access cisco.com in the same time for information and other stuff like IOS download, then this will take a lot of time. Of course if you see that the productivity is going down because 80% of the traffic is to YouTube site (nothing against them, just picked randomly), then such measures are welcomed.

Since the discussion below is beyond the scope of this tutorial and represent only a personal opinion, let me tell you what I’ll show in the tutorial below.  On Fa0/0 (out connection) we will limit the HTTP responses sent out to 256kbps from Monday to Friday between 8:00 and 16:00

Please see the tutorial below:

Cisco-QoS cisco, http, limit, qos, traffic, workdays