From: sheherezada@gmail.com
Date: Tue Mar 04 2008 - 06:31:47 ARST
If everything connecting to the core is dual-homed (i.e. connecting to
both core A and core B), you may consider a virtual core switch (this
way, you can have ether channel to the virtual core). However, I have
never tried or seen this into production.
Otherwise, I would stick with the basic triangle topology (L2 to
collapsed core, L3 in between - provided that you don't have any daisy
chaning out there). Avoid using VLAN 1 for any purposes.
Mihai
On Tue, Mar 4, 2008 at 4:33 AM, Jim Cheng <l3type@gmail.com> wrote:
> Guys
>
> I have a design question
>
> I'm going to use L2 links between one of my new 3750 stacks to the two core
> switches. The entire 3750 stack (5 switches) is set to vlan1. I'm going to
> have a single 1GB link connecting from the top and bottom member of the
> stack into CoreA and CoreB and this would provide redundancy but I would
> also prefer to load-balance over these. If I had separate VLAN's running on
> this switch, I could have done so with STP priority distributing VLAN's over
>
> each of these 2 links but that's not the case here
>
> I also cannot do Etherchannel since I'm terminating on two different core
> switches.
>
> Any solution to this problem?
> Thank you
>
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