I've got 2 Core-Multilayer-Switches connected with each other with two cables (trunks). They are also connected with the distribution-switches (and each switch is connected with both core-switches).
Each core-switch is also connected with two WAN-Router(routed-ports) (It's not shown in my "drawing" that EACH core-switch is connected to BOTH WAN-Routers).
(WAN 1) O O (WAN 2) \ / Core1 ============ Core2 | \ / | | \ / | | \ / | DISTRIBUTION SWITCHES
Now, I want to form HSRP with the core-L3-Switches for the distribution Switches and the WAN-Router. Do I have to configure 2 virtual router? Or are the wan-router and the dis-switches accessing the same virtual router? And what connection type is used between those core-switches (trunk or normal ip-interfaces)