From: rdanu (rdanu@apex3.com)
Date: Tue Jan 20 2004 - 16:01:54 GMT-3
I am trying to put together the pieces of a migration puzzle. The company I work for is thinking about a possible migration of their data center. I thought about several options but Id like to see what some of you seasoned professionals might advise. A brief scenario is described below, if you have any questions feel free to ask. I appreciate any feedback!
Current setup:
Location A contains 6 production VLANS, and customers access everything via a high speed (OC-3) Internet connection.
Migration scenario:
The goal is to transition all the servers from Location A to location B. The distance amongst locations is approximately 100 miles. No down time is allowed.
Servers at Location A have subnet/VLAN information 10.1.1.0, 10.1.2.0, 10.1.3.0. 10.1.6.0.
A private OC-3 will connect Location A to Location B.
Servers will be moved to Location B in batches of 10. There are approximately 150 servers in total.
The objective is, to keep all servers working together and allow them to co-exist on the same VLANS, at both locations.
Internet access will continue to be provided through Location A, until all servers have been migrated to Location B.
In essence, how could the same exact VLANS (same subnets) co-exist and communicate with each other at both locations via a routed IP network? Is there a method to tunnel VLANS through an IP network?
Location A contains CAT5500 Equipment. Location B will have CAT3750 Cisco equipment, possibly 4500.
Example:
Out of a pool of 20 Web servers (Load Balanced at Location A from its Internet connection), about 10 will be moved to Location B in the 1st trip. We have to make sure that these moved servers will preserve the same IP address. The requirement is to have the 10 Servers at Location A, and the 10 Servers at Location B work together, as if they were next to each other.
Thanks
Richard Danu
This archive was generated by hypermail 2.1.4 : Mon Feb 02 2004 - 09:07:48 GMT-3