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Author Topic: Extend CS1000E DHCP out to Fiber Remotes  (Read 2168 times)

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Offline kimac37

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Extend CS1000E DHCP out to Fiber Remotes
« on: June 18, 2014, 03:23:47 PM »

I have a working DHCP scope on my CS1000E PBX, the vendor squeezed a /23 subnet in between two other subnets. This gives me 254 IPv4s for my 400 1140E phones :( I have two fiber remotes feeding off my main CS100E, they are all on different subnets. Does anyone know how I can add/extend DHCP out to these fiber remotes in order to utilize free subnet space?


Offline telecom116

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Re: Extend CS1000E DHCP out to Fiber Remotes
« Reply #1 on: June 19, 2014, 04:10:02 PM »
I'm a bit confused; can you provide more details?  If yo have remote IP phones you can put them on any subnet that can be routed by your data network; your DHCP server for the particular subnet can be at the local site, or you can have one central DHCP server handling all of your subnets, using DHCP forwarding/helper in your router.

Personally, I'd segment my network into smaller subnets (ie, /24 based at maximum) and use a router or routing switch to enable the commuication between the segments, which is what I do.  I have 12 CS1000E MGC cabinets, of which eight are at separate sites with WAN access via MetroE to handle local analog trunks.  Each site has its own routed ELAN (for the MGC) and TLAN (voice), using ERS4000 and 5000 switches at the sites for routing between the local /24 subnets and the MetroE WAN.
« Last Edit: June 19, 2014, 04:18:09 PM by telecom116 »