--On February 25, 2006 11:04:12 AM -0500 "Patrick W. Gilmore" <patrick@ianai.net> wrote:

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On Feb 24, 2006, at 9:03 PM, Scott Weeks wrote:

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I have 2 core routers (CR) and 3 access routers (AR) currently connected point-to-point where each AR connects to >> each CR for a total of 6 ckts. Now someone has decided to >> connect them with Gig-E. I was wondering about the benefits >> or disadvantages of keeping the ckts each in their own >> individual LANs or tying them all into one VLAN for a >> "Transit LAN" as those folks that decided on going to Gig-E >> aren't doing any logical network architecting (is that a >> real word?).

In my experience either solution has tradeoffs and the correct one depends greatly on your traffic patterns. Having said that, what I find causes most of the problems in either solution is when the Layer 3 topology starts to diverge from the Layer 2 topology.

Hi Guys, Apologies for the late response, I had to do an unexpected outer island trip and got back late last night. I am just using OSPF area zero between the CRs and ARs. So, it's full mesh over a LAN if I do the "transit LAN". Is that what you're referring to? Could you elaborate? Thanks, scott