How to configure a switch for multiple sites
I have a switch that floats between multiple sites. We have a DHCP server that we configure IP ranges for. What I am trying to accomplish is allowing for the floating switch to be able to be plugged into any location, grab an ip, and then hand out ip's from that range. For note: The switch is a Cisco 3560X. Would I be able to put in ip helpers to the DHCP server and then perhaps also add the ip helpers of each of the routers at the locations, or any other suggestions? Thanks!!
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I understand that. But at each location, you would want it to have the same address.
For example, at location A, you would want the switch to always get the IP address 10.1.1.99. This would require a reservation for that address and a manual binding of that IP address to the switch's MAC address on the DHCP server. And if you have multiple SVI's, you would need to do that for each SVI.
And you would have to do this at each location.
For example, at location A, you would want the switch to always get the IP address 10.1.1.99. This would require a reservation for that address and a manual binding of that IP address to the switch's MAC address on the DHCP server. And if you have multiple SVI's, you would need to do that for each SVI.
And you would have to do this at each location.
Why do you need a different scope at each location? IF you're using the 3560 to do Layer-3 routing, the subnets will be confined to the floating switch only, and there should be no harm in having a "traveling DHCP Scope" to go with your "traveling" switch, and using some dynamic routing to advertise the current location to the rest of the network.
However, if you only use the switch to temporarily expand the port capacity at a location (and not adding additional VLANs or subnets), you do not need to do Layer 3 routing on the 3560 - Just configure the management SVI to use DHCP to obtain its own IP. Any device that connect to the floating switch will connect to the local VLAN, and DHCP requests will be forwarded to the DHCP server by the existing (permanent) default gateway (NOT by the SVI on the switch), through the ip helper addresses configured there.
Or am I missing something? I know this is not exactly what you asked, but it seems that this is what you want to accomplish?
However, if you only use the switch to temporarily expand the port capacity at a location (and not adding additional VLANs or subnets), you do not need to do Layer 3 routing on the 3560 - Just configure the management SVI to use DHCP to obtain its own IP. Any device that connect to the floating switch will connect to the local VLAN, and DHCP requests will be forwarded to the DHCP server by the existing (permanent) default gateway (NOT by the SVI on the switch), through the ip helper addresses configured there.
Or am I missing something? I know this is not exactly what you asked, but it seems that this is what you want to accomplish?
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