Cisco 7246 - uBR Router Instrukcja Użytkownika Strona 15

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cable helper-address
Cisco uBR7246 Universal Broadband Router Feature Enhancements 15
cable helper-address
To specify a destination address for User Datagram Protocol (UDP) broadcast (DHCP) packets, use
the cable helper-address interface configuration command. Use the no form of this command to
disable this feature.
cable helper-address IP-address {cable-modem | host}
no cable helper-address IP-address {cable-modem | host}
Syntax Description
Default
No default behavior or values.
Command Mode
Interface configuration
Command History
Usage Guidelines
If you specify a secondary interface address, the giaddr field in the DHCP requests will be sent to
the primary address for DHCP requests received from cable modems, and to the secondary IP
address for DHCP requests received from hosts.
Examples
The following example forwards UDP broadcasts from cable modems to the DHCP server at
172.23.66.44:
Router(config-if)# cable helper-address 172.23.66.44 cable-modem
The following example forwards UDP broadcasts from hosts to the DHCP server at 172.23.66.44:
Router(config-if)# cable helper-address 172.23.66.44 host
IP-address The IP address of a DHCP server.
cable-modem Specifies that only cable modem UDP broadcasts are forwarded.
host Specifies that only host UDP broadcasts are forwarded.
Release Modification
11.3 NA This command was first introduced.
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