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JUNOSe 11.1.x Broadband Access Configuration Guide
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DHCP External Server Configuration Requirements
To configure the E Series router to support an external DHCP server, you enable the
DHCP external server application on the router. If you are using DHCP packet
detection, you must also specify each external DHCP server that determines which
packets are monitored. The E Series router monitors all DHCP traffic between
subscriber clients and the specified DHCP servers.
Enabling and Disabling the DHCP External Server Application
Use to enable the DHCP external server application on the E Series router. Use the
no version of the command to disable the application.
To enable the DHCP external server application on the router:
To disable the DHCP external server application on the router:
528
DHCP External Server Configuration Requirements
mode, if DHCP external server is configured for duplicate MAC mode and is
currently managing any DHCP clients.
Do not enable duplicate MAC mode for the DHCP external server application
when it is configured in the same VR with either of the following:
An instance of the DHCP relay application that is currently managing host
routes
Any instance of the DHCP relay proxy application
When you enable duplicate MAC mode, the DHCP external server application
ignores notifications of new clients from the RADIUS relay server application
because these notifications do not include the giaddr.
Configuring DHCP External Server to Uniquely Identify Clients with Duplicate
MAC Addresses on page 536
dhcp-external duplicate-mac-address
Issue the service dhcp-external command:
host1(config)#service dhcp-external
Issue the no service dhcp-external command:
host1(config)#no service dhcp-external
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Troubleshooting
