Dear Experts, Please help me in this regards,
Yatin Dave ---------- Forwarded message ---------- From: Yatin Dave <[email protected]> Date: Mon, Apr 22, 2013 at 3:47 PM Subject: OT:Cisco 6500 VSS best practice.... To: "[email protected]" <[email protected]> Dear Expert, Have got two Core Cisco 6509 with VSS capable SUP engines on both the SW along with few Cisco 3750X for distribution and access. Management want to deploy VSS as suggested but am confuse as how to deploy it? The scenario is as below Two DC locations 5 km apart in which one out of the two cisco 6500 is going to be installed Both DC location have dual fiber direct connections 7 distribution / access locations with each location has fiber connection with both the DC locations 1 distribution / access location has dual fiber connection with both DC location there will be layer 3 link between distribution and core and we are planning to run OSPF / EIGRP routing protocols on it the MEC between Core and distribution will be Layer 3 Graphical representation is attached here with Now what am planning is to have VSL link between both the DC locations with their both fiber direct connection but then am not having any direct connection between both the DCs to mitigate worst case Dual-Active scenario. Now am having just the indirect links through distribution switches between both the DC core switch, Can anybody please tell me which Dual-Active preventive measure should I take and how? Know that PAgP enhanced mode will help in the scenario but doubt that whether it will work on the Layer 3 links along with the L3 routing protocol or else should I bridge additional links and use Fast Hello? or create VSL on single Link and use other link with any line card and configure Fast-Hello or other method for mitigating Dual-Active case. Please suggest the best practice for the scenario Thanks in Advance, With Warm Regards, Yatin Dave
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