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26 Using Enterprise Edge Services

Enterprise Edge Networking Operations Guide P0910464 Issue 01

If you set up the Enterprise Edge server as a DHCP server, you must let all of your

workstations know that they will have their new IP addresses assigned by

Enterprise Edge. To do this, you may need to change the configuration of each

workstation individually.

If you already have a DHCP server, you must let it know that the Enterprise Edge

server is their gateway and DNS proxy for the workstations.

Your Enterprise Edge server can function as a DHCP server. You can use this

feature if you do not want to administer static IP addresses for every workstation on

your network. You can configure Enterprise Edge to assign IP addresses

dynamically.

Automatic Configuration using a DHCP server

To configure the DHCP server, you need to create a particular range (or scope) for

each LAN interface in Enterprise Edge and allocate a block of IP addresses for that

scope. The Enterprise Edge Auto-Configure system automatically creates a scope

using parameters inherited from the LAN interface.

Guidelines for Using DHCP

Since many default DHCP parameters are inherited from LAN interface

parameters, configure LAN interfaces before configuring DHCP.

If you are modifying the DHCP configuration on Enterprise Edge, follow the same

guidelines of your organization. In particular, you can perform one or more of the

tasks listed below to ensure proper operation of the networked system:

1. If a change in the DHCP configuration resulted in the change of ‘Router’ and

‘Subnet mask’ options in a scope, users must do one of the following to

ensure basic operation:

• Execute ipconfig /release and ipconfig /renew on each of the workstations.

For Windows 95 and Windows 98, use its equivalent, winipcfg.

• For clients that do not support ipconfig and winipcfg, reboot is required to

renew their IP addresses.

2. If change in DNS server or DNS name options happens, users need to repeat

the tasks in step 1 to ensure proper connectivity with the organization.

3. Always schedule a down time associated with these changes.

4. Nortel Networks recommends that you reboot Enterprise Edge to initialize

changes.

Using Enterprise Edge, you can define a DHCP scope for each LAN interface.

DHCP server parameters are divided into two categories: global and scope specific.

Global parameters apply to all scopes. Specific parameters apply to a specific

scope.

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