Moving your RAS server
January 13, 2010
Due to some unforeseen issues, we had to move our RAS server into a new DHCP scope, and VLAN today. This is usually relatively easy…
- Change Server IP
- Change switch port VLANs
- Change firewall to point to new server
This went smoothly, all being completed in about 2 minutes. But on checking the DHCP scope, the RAS server wasn’t requesting any IP addresses. I recycled the RAS service, but that didn’t seem to help, only hint of an issue for RAS was the generic message about DHCP server not being reachable…
Apparently my brain has been on overdrive, and I forgot that moving the server to a different VLAN also made the DHCP requests not reach it. This is easily resolved with a few commands on our switches…
(config)# int vlan77
(config-if)# ip helper-address 10.13.1.3
(config-if)# exit
(config)# exit
# write
A quick restart of the RAS service, and the new VLAN is hosting its assigned IP scope.
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