I have a Cisco 4500 Switch as core switch where all the users will be conecting to and there will be two 3845 routers facing a datacenter.
I need to have three VLANs:
VLAN1 for managemnet
VLAN2 internal Office
VLAN3 External Office
and have this switch talk to these routers. Then I need to setup (all static) HSRP between the two routers for redundancy.
I would appreciate if you guys can help me with the configuration of these VLANs. all on the switch? do I need subinterfaces? I have enough physical ether interfaces on the routers.
since it is only pone switch as core and everthing else, collapse, then I assume i don't need subInterfaces on the router. I am confused on how to defined the trunck or truncks in this case.
Your input is highly apprecitaed.
If you are doing the routing on the 4500's then no the link will not be a trunk link just a routed link . On the 4500 link interface just type no switchport which makes that a routed port and add your address to the interface . The link would only be a trunk if you choose to do all your routing on the 3845's.
Well you can use the static routes as outlined before. Assuming that your 3845 routers would have routes for the remote sites you could just add a default route on your 4500 switch one for each 3845 router ie.
ip route 0.0.0.0 0.0.0.0 "3845_1 interface connected to 4500"
ip route 0.0.0.0 0.0.0.0 "3845_2 interface connected to 4500"
Or as said before you can use a dynamic routing protocol between your 4500 and 3845 routers.
The links from the 4500 to the 3845's are not trunk links. They are not L2 links at all. They should be configured as L3 P2P links - see previous post for configuration details.