To to pick your brain i have 2 pairs of dark fibers between two datacenters. Dark fibers are terminating on 8 Port channel CWDM and have two pairs of catalyst 6509 switches connecting to the CWDM using 2 channels each at each datacenters. The connection between the 6509's via CWDM are Layer 3 routing usinf EIGRP. I would like to also have a layer 2 connecting between the datacenters since i have few spare channels on the CWDM for server clustering ( two servers between DC need to be on same subnet) and don't want to encounter any STP issues between the 6509 switches. How can i achieve this?
Dont have any layer 2 connection on the 6500's since they are core and connect another pairs of Catalyst 4507 at each datacenter to the spare channels on the CWDM and have a layer 2 trunk between the datacenters from the catalyst 4507 acting as a distribution switches passing frames between the two servers via layer 2 for vlan 95 and have the 4507 connect to the Core 6509 via layer 3 routing. So the cat catalyst 4707 will act as a distribution and access.
At a high level i cannot see why this wouldn't work although perhaps you may consider eiher 3750-E or 4948 switches rather than the 4500 switch which seems slight overkill for forming a separate L2 link.
You don't say what function your 6500's serve but assuming they are core within your DC's i would support separate switches for L2 connectivty if you can afford it.
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
Introduction Prepositioning is a powerful tools on the WAAS platform but
it is not always easy to figure out why your jobs are failing when
trying to retrieve the files.Here is a method that should help you to
figure out the reason why they are not succes...