I am amazed by the number of networks that I encounter that do not have optimal spanning tree configurations. I first read Radia Perlman’s book “Interconnections” back in 1994. I am amazed that 15 ...

Dealt with quite a little clusterf*** today with TimeWarner Cable on their "business" side. We brought up an NNI with them on Friday and I had someone at a customer site trying to turn up our first ...

I've got a customer with a Dell switch (power connect 6248 I think) with 3 uplinks to my network. The uplinks are separate layer 3 links, each one being a separate IP block in a separate VLAN on my ...

Our project intends to evaluate and compare the performances of STP and RSTP on Cisco switches supported by OPNET. We were planning to do the comparison of STP with more other types such as Multiple ...

The big question we’ve been looking at for the last few weeks is the value of a 2 switch lab topology for prepping Spanning Tree topics for both CCNA and CCNP. I’ll conclude the discussion this week, ...

New Catalyst 4500 E-Series chassis and supervisor promise an easy onramp to 10Gig, while new Catalyst 6500 supervisor and Virtual Switching System remake redundant networking Today Cisco Systems ...