I'm trying to shore up a little bit of my WAN, and I'm in the process of trying to address the biggest, most glaring concern I have: I have a 3925 that's a SPOF for our entire enterprise WAN.

The word redundancy is thrown around often in today's communications equipment sector. And, for the most part, this term is used to describe systems that deliver the coveted 99.999 percent (five nines ...

Minimising network downtime is an important aspect of business continuity, particularly given that many organisations are now using one network for all voice and data communications. As a consequence, ...

David Davis explains how to configure EtherChannel to increase your bandwidth and provide redundancy on a Cisco network. In my previous article on the Virtual Router Redundancy Protocol (VRRP), I ...

Further, both HSRP and VRRP require three IP addresses per subnet, even though routers use only one address at a time. And while rapid spanning tree recovers from failures much faster than the ...

Vyatta, an open-source router company, released the first beta version of its WAN router code this week, with the goal of becoming the networking equivalent of Linux or Firefox, but taking aim at ...

Joel is an internationally recognized expert in the areas of security, networking and messaging. Follow him on X (formerly Twitter) @joelsnyder. Picking the right edge and top-of-rack switches ...

We have now met the archenemy of networks, Mr. Murphy, as he cackles “What can go wrong, will,” in the introduction to failure modes and the discussion of failure modes at the physical and data link ...