Routing between VLANsLocked
I am researching this topic before drafting a design and would like some guidance.
Reduced to its simplest, the problem is this. I have two Cisco Catalyst L2 switches (switch SA and switch SB) and one Cisco 1811 router (router RA). All three devices support VLANs with 802.1Q encapsulation.
The VLANs will be port-based on both switches. The number of VLANs is irrelevant but it should be taken that there are more than two to make this scenario sensible. It will be necessary to route IP between VLANs on SA and VLANs on SB, using RA.
In so far as connections between switches and routers are concerned, in order to achieve this routing, I understand that the switches should be connected to the router using trunk ports. I understand that the advantage of this method over that of connecting the router to the switches using access ports on the switches is that the former scales better to handling several VLANs.