Dhcp Relay Agent Configuration Commands; Dhcp Relay Address-Check; Dhcp Relay Information Circuit-Id Format-Type - H3C S5120-SI Series Command Reference Manual

1

DHCP Relay Agent Configuration Commands

DHCP Relay Agent Configuration Commands

dhcp relay address-check

Syntax
dhcp relay address-check { disable | enable }
View
Interface view
Default Level
2: System level
Parameters
disable: Disables IP address match check on the relay agent.
enable: Enables IP address match check on the relay agent.
Description
Use the dhcp relay address-check enable command to enable IP address match check on the relay
agent.
Use the dhcp relay address-check disable command to disable IP address match check on the relay
agent.
By default, the function is disabled.
If a requesting client's IP and MAC addresses do not match any binding (both dynamic and static
bindings) on the DHCP relay agent, the client cannot access external networks via the DHCP relay
agent.
Note that,The dhcp relay address-check enable command only checks IP and MAC addresses of
clients.
Examples
# Enable IP address match check on the DHCP relay agent.
<Sysname> system-view
[Sysname] interface vlan-interface 1
[Sysname-Vlan-interface1] dhcp relay address-check enable

dhcp relay information circuit-id format-type

Syntax
dhcp relay information circuit-id format-type { ascii | hex }
1-1