Cisco Discovery Protocol (CDP) is a link layer discovery protocol that has been integrated into Cisco switches and routers ever since I can remember. Cisco introduced CDP support into their routers ...

Network Engineers are always looking for new ways to gain some low-cost network testing capabilities. Few companies sufficiently fund networking labs for their networking teams to learn on prior to ...

Integrated Services Digital Network (ISDN) provides for digital transmission over ordinary telephone copper wire as well as over other media uses. In this continuation of his tip on ISDN ...

Getting a handle on the invisible part of your network—the protocols that are in use—can be of enormous value in helping you detect problems. So far, we've talked about the tangibles of your ...

I'm trying to set up a VPN using Windows 2k server and in order to do it I understand that I need to forward a port #1723 as well as IP Protocol 47 (GRE). <BR><BR>I can forward the port just fine, but ...

Cisco has released a teleconferencing interoperability protocol into the public domain, as part of an effort to stimulate the growth of multi-screen telepresence systems. On Tuesday, at its Networkers ...

MOUNTAIN VIEW, Calif.--After four years and $500 million in investments, Cisco Systems unveiled its high-end router--but it could be six months to a year before it starts seeing any revenue from the ...