mac

294
1 8 0 6 VLAN Slot Module Port
1 byte 1 byte 1 byte 1 byte 2 byte 1 byte 1 byte 2 byte
Suboption
type
Length
Circuit
ID type
Length
VLAN field fills in VLAN ID. For chassis switch, Slot means slot number, for box switch,
Slot is 1; default Module is 0; Port means port number which begins from 1.
The compatible subscriber-id format with HP manufacturer defined as below:
1 2
Port
1 byte 1 byte
2 byte
Suboption
type
Length
Port means port number which begins from 1.
Example: Set subscriber-id format of Relay Agent option82 as hexadecimal format.
Switch(config)#ip dhcp relay information option subscriber-id format hex
17.12 ip dhcp relay information policy
Command: ip dhcp relay information policy {drop | keep | replace}
no ip dhcp relay information policy
Function: This command is used to set the retransmitting policy of the system for the
received DHCP request message which contains option82. The drop mode means that if
the message has option82, then the system will drop it without processing; keep mode
means that the system will keep the original option82 segment in the message, and
forward it to the server to process; replace mode means that the system will replace the
option 82 segment in the existing message with its own option 82, and forward the
message to the server to process. The ―no ip dhcp relay information policy‖ will set the
retransmitting policy of the option 82 DCHP message as ―replace‖.
Parameters: None
Command Mode: Interface configuration mode.
Default Settings: The system uses replace mode to replace the option 82 segment in the
existing message with its own option 82.
User Guide: Since the DHCP client messages might go through several DHCP Relay
Agents when passed to the DHCP server, the latter Relay Agents on the path should set
policies to decide how to process the option82 added by Relay Agents before them. The