Hi,

I got a network environment using HP network switches and Cisco routers for our WAN connections and for connecting to one of our ISP (Got 2 ISP). Got a couple of buildings connected by fiber back to server room 1. We got 2 server rooms connected by fiber and we employ HP4204vl switches on these 2 server room. So far we have 13 VLAN's and they are configured statically, some routed by the HP4204vl in the server room 1 while some are routed by our firewall (smoothwall) in server room 2. Not all VLAN's propagate to the buildings. Some VLAN's on server room 2 doesn't propagate to other connections in our campus. QoS is also employed to cater for VoIP between server room 1 & 2

We are in the process of procuring 2  Cisco 3750 for the purpose of replacing the function of the HP4204vl in server room 1. These 2 3750 will be stacked  and we are going to distribute our server connections to the stacked switch. We are also going to add in a couple more VLAN's but not propagating to the HP ethernet network to cater for our storage network. These 2 x 3750 switches will be deployed at the server room 2. Basically our server room 2 will be acting as our main server room with this change

I need help with the following:

• Stacked configuration
• InterVLAN configuration. What is the best approach I should take so that I have a smooth transition from HP4204vl doing the inter VLAN routing to the Cisco 3750 doing the main routing. Any configuration example would really help. In terms of connecting Cisco to HP
• Cisco fiber module - I need advice as to which fiber module I need to procure so that I can connect the Cisco switch at server room 2 back to the HP switch at server room 1. Am currently using HP Procurve Gigabit LX-LC mini-GBIC for fiber connectivity between server room 1 & 2 using HP4204vl
• QoS for VoIP connectivity between server room 1 and server room 2

I can provide a drawing depicting the current and what we want to achieve with the addition of the Cisco 3750's. Hope someone helps