Hi,We've got a Cisco network consisting of a 3750G-12S acting as a core switch and about 10 3750-24P switches in a mesh topology for our network.  We also have a Cisco wireless controller. Hanging off most of the switches are VoIP phones, Cisco wirel...

Hi there,I have an existing stack of 4 C3750's which are using the rear stacking cables.  I'm looking to add one more C3750 with the same cable.  Does the whole stack need to get powered down before I add this additional switch to the stack?  Or can ...

Hi, we have a UC520 which we are using for SIP trunking. We use it exclusively for making and receiving phone calls. If our DSL goes down, we obviously can't process calls so we're looking to implement some sort of redundancy.My understanding is th...

Hi,I have an annoying problem. I have a Cisco 871W router with a VPN tunnel to another location that works fine. If the tunnel is up, UMA enabled phones won't work on the connection and the router will log this error:*Mar 29 01:44:37.791: %CRYPTO-4...

Hi,I will have a PIX with OS8 installed on it serving default route to the internet. Is it possible to bring up a tunnel on the PIX to a backup network and then advertise that route via EIGRP to a 1750 series router acting as the clients default gat...