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DHCP / TFTP
Example
Suppose the ranges of IP addresses available for your IP Telephone network are:
135.254.76.7 to 135.254.76.80
135.254.76.90 to 135.254.76.200
135.254.76.225 to 135.254.76.230
Your Start IP Address and End IP Address entered on the IP Address Range dialog box
should then be 135.254.76.7 and 135.254.76.230, respectively.
On the Add Exclusions dialog box, you should exclude the following ranges:
135.254.76.81 to 135.254.76.89
135.254.76.201 to 135.254.76.224
12. Click Next when all the exclusions have been entered.
The Lease Duration dialog box is displayed.
13. Enter 30 days in the lease duration for all telephones that will receive their IP addresses
from the server. This is the duration after which the IP address for a device expires and
needs to be renewed by the device.
14. Click Next.
The Configure DHCP Options dialog box is displayed.
You can add additional exclusion ranges later by right clicking on the Address Pool under
the newly created scope and select the New Exclusion Range option.
15. Click No, I will activate this scope later.
The Router (Default Gateway) dialog box is displayed.
16. For each router or default gateway, enter the IP address and click Add.
17. When you are finished, click Next.
The Completing the New Scope Wizard dialog box is displayed.
18. Click Finish.
The new scope is added under the server in the DHCP tree. It is not yet active and will not
assign IP addresses.
19. Highlight the newly-created scope, and select Action->Properties from the menu.
20. Under Lease duration for DHCP clients, select Unlimited and then click OK.
!
WARNING:
IP Address leases are kept active for varying periods of time. To avoid having
WARNING:
calls terminated suddenly, make the lease duration unlimited.
410 Avaya Application Solutions IP Telephony Deployment Guide
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