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This Question is Answered 2 Helpful Answers available (2 pts)
7653 Views 6 Replies Latest reply: Jul 25, 2011 1:43 PM by Jared RSS

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Stretched Vlans

Jul 23, 2011 6:34 AM

Alim Pervizi 5 posts since
Jan 11, 2009

Hello there,


We plan to deploy VMware vCenter SRM failover between two buildings.


To achieve a successful failover of the VMs from the Protected Site Vlan (Production Site) to the Recovery Vlan (Disaster Recovery Site) and have all the virtual machines come up in the Disaster Recovery Site using the same IP as the Production Site is to stretch the Protected Vlan to the Recovery Site.


How do we stretch Vlans across a Layer 3 link?


Do we just create the same Protected Vlan configuration in the Recovery Site (DR) switch?


Protected Vlan

Vlan 10


Recovery Vlan

Vlan 10


The link between the buildings is private dark fiber.


Building I and Building II have layer 3 switch and the link between the buildings is routed, Layer 3.


Building I         


Cisco 6506

Interface GigabitEthernet3/1

no switchport

ip address



Building II


Cisco 4507R

Interface GigabitEthernet4/1

no switchport

ip address





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