PerimeterIT
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Bridging VLAN across two datacenters
We are in the process of building a new datacenter to transfer our operations.
Each site has a dedicated WAN link.
To assist during the cutover we have gotten a dedicated Layer 2 fibre backbone run between the two locations. The fiber provided by our ISP has a VLAN tag associated with it.
Is there anyway I can encapsulate VLAN tags overs this link?
I would like to have the same VLANs available in both sites simultaneously during the cutover so that services in one datacenter can access servers and routers in the other seamlessly.
That way we can hot migrate a server to the new datacenter without having to change it's IP and configuration. It would still use the default gateway router and IP structure of the old datacenter until we're ready to cutover that part.
DatacenterCutover.pdf
Each site has a dedicated WAN link.
To assist during the cutover we have gotten a dedicated Layer 2 fibre backbone run between the two locations. The fiber provided by our ISP has a VLAN tag associated with it.
Is there anyway I can encapsulate VLAN tags overs this link?
I would like to have the same VLANs available in both sites simultaneously during the cutover so that services in one datacenter can access servers and routers in the other seamlessly.
That way we can hot migrate a server to the new datacenter without having to change it's IP and configuration. It would still use the default gateway router and IP structure of the old datacenter until we're ready to cutover that part.
DatacenterCutover.pdf
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1. Be very careful as you can take down your world
http://www.netcraftsmen.com/spanning-layer-2-between-data-centers/
https://www.packetmischief.ca/2013/04/09/dci-the-need-for-stretched-layer-2/
2. Here is good starting reading for the how.
http://www.cisco.com/c/en/us/products/collateral/data-center-virtualization/data-center-interconnect/white_paper_c11_493718.html