Logical topolgy Question

[SSMIC]

Hi Everyone,

I currently have the following switch equipment two E5412zl, two 6120XG and two GBe2c's. I only use the GBe2c's for my iscsi storage and nothing else, there are Qlogic mezzanine cards in each server. What in your opinion would be the best way to set these up for maximum redundancy and performance? I have looked at meshing the two E5412zl's and 6120XG's but I don't believe the 6120XG's are capable of meshing. I have looked at standard STP and MSTP. I have a total of 8 vlans (This includes the storage VLAN). I have attached the document that shows the equipment I have. Any suggestions and/or comments would be valuable. thanks!

[DaveAnderson]

Not a lot of info in your layout diagram...

I would suggest that you setup dual uplinks from two switches in your BC chassis back up to the server room core switch.  Aggrigate each pair of ports in a Trunk (Cisco's equivlant of a Port Channel).  Run VLAN tagging on both sides to allow you to segment your network into VLANs as needed.  That will give you a total of 4 uplinks to your core.  If you need more bandwidth then add more uplinks.  

The remote site (assuming it is uplinking via the Single Mode fiber) would have two pair of SM Fiber connections setup (again in a port trunk or portchannel).  I would setup your Layer 3 at the remote office to have separate subnets running there and then route the traffic back towards the core server room swith using the Layer 3 functionality.

[SSMIC]

Sorry Dave.

The diagram was just illustrating the equipment I have. I am just trying to ensure that I have redundancy from one end to the other. I would have liked to mesh the E5412zl's and the 6120XG but the 6120's do not support meshing. I am just trying to figure out the best way to set the Blade up with the core switch in the best possible way for resiliency and was hoping for some ideas. As for linking the two core switches it will be straight forward I think with trunking and LACP. I was thinking of the routing at the remote office as well because of the printing and other shared network devices to eliminate unnecessary traffic between the two core switches.