Collin nailed it - you can either run the PSU's in combined or redundant mode. Combined mode allows lesser PSU's to be used however as Collin noted, if you lose a PSU, you start dropping line cards as you now cannot meet the power capacity requireme...

Try a crossover cable, see how that works out.

Just to clarify, your physical setup is: 1841 -> 2960#1 -> 2960#2If this is the case, then it's basically router on a stick. Subinterfaces on the router's ethernet interface - 1 per Vlan on the switches. Trunk the lead switch to the router, trunk th...

What kind of cable are you using? Also, have you tried hard-coding both switches to 100/full?

Etherchannel technology allows you to bundle multiple ethernet links together. This creats a single logical link, which load balances traffic across the multiple physical links. You can mesh the switches, where A<->B, B<->C, A<->C, so that all switc...