Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 9 DHCP Configuration Commands
3Com Corporation
9-50
replace: Replaces the original option 82 information in packets with the option 82
information of this frame relay.
Description
Use the dhcp relay information strategy command to configure a strategy for
handling packets with option 82 on the DHCP relay.
Use the undo dhcp relay information strategy command to restore the default
strategy for handling packets with option 82.
When receiving a packet with option 82, the DHCP relay replaces the information in the
option 82 field with the option 82 information of itself.
Example
# Configure the DHCP replay to leave the option 82 information carried in requests
intact.
[3Com] dhcp relay information strategy keep
9.3.4 dhcp relay release
Syntax
dhcp relay release { client-ip mac-address } [ server-ip ]
View
Interface view, system view
Parameter
client-ip: IP address of the DHCP client.
mac-address: MAC address of the DHCP client, which is in the format of H-H-H.
server-ip: IP address of the DHCP server.
Description
Use the dhcp relay release command to send an IP address releasing request to a
DHCP server via the DHCP relay.
In the event no IP address of DHCP server has been specified, release packets would
be sent either to all the DHCP servers if this command is configured in system view or
to all the relay addresses configured on an interface if this command is configured in
interface view.
After receiving an IP address release request from the DHCP relay, the DHCP server
releases the IP address from the IP-in-use address pool and moves it to the
lease-expired queue. Normally, this address will experience some time before