DHCP and BOOTP Relay Commands

This section describes the commands you use to configure BootP/DHCP Relay on the switch. A DHCP relay agent operates at Layer 3 and forwards DHCP requests and replies between clients and servers when they are not on the same physical subnet.

NOTE: Use Helper-IP feature to enable Relay mode, for configuring server address and for viewing Statistics.

bootpdhcprelay cidoptmode

This command enables the circuit ID option mode for BootP/DHCP Relay on the system.

• Default: disabled
• Format: bootpdhcprelay cidoptmode
• Mode: Global Config

no bootpdhcprelay cidoptmode

This command disables the circuit ID option mode for BootP/DHCP Relay on the system.

• Format: no bootpdhcprelay cidoptmode
• Mode: Global Config

bootpdhcprelay maxhopcount

This command configures the maximum allowable relay agent hops for BootP/DHCP Relay on the system. The <hops> parameter has a range of 1 to 16.

• Default: 4
• Format: bootpdhcprelay maxhopcount <1-16>
• Mode: Global Config

no bootpdhcprelay maxhopcount

This command configures the default maximum allowable relay agent hops for BootP/DHCP Relay on the system.

• Format: no bootpdhcprelay maxhopcount
• Mode: Global Config

bootpdhcprelay minwaittime

This command configures the minimum wait time in seconds for BootP/DHCP Relay on the system. When the BOOTP relay agent receives a BOOTREQUEST message, it MAY use the seconds-since-client-began-booting field of the request as a factor in deciding whether to relay the request or not. The parameter has a range of 0 to 100 seconds.

• Default: 0
• Format: bootpdhcprelay minwaittime <0-100>
• Mode: Global Config

no bootpdhcprelay minwaittime

This command configures the default minimum wait time in seconds for BootP/DHCP Relay on the system.

• Format: no bootpdhcprelay minwaittime
• Mode: Global Config

show bootpdhcprelay

This command displays the BootP/DHCP Relay information.

• Maximum Hop Count: The maximum allowable relay agent hops.
• Minimum Wait Time (Seconds): The minimum wait time.
• Admin Mode: Indicates whether relaying of requests is enabled or disabled.
• Circuit Id Option Mode: The DHCP circuit Id option which may be enabled or disabled.

NOTE: Use Helper-IP feature to enable Relay mode, for configuring server address and for viewing Statistics.