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xStack DGS-3400 Series Layer 2 Gigabit Managed Switch CLI Manual

config dhcp_relay option_82 state

Restrictions Only administrator-level users can issue this command.

Example usage:

To configure DHCP relay option 82 state:

DGS-3400:4#config dhcp_relay option_82 state enable

Command: config dhcp_relay option_82 state enable

Success.

DGS-3400:4#

config dhcp_relay option_82 check

Used to configure the checking mechanism of DHCP relay agent

information option 82 of the switch.

config dhcp_relay option_82 check [enable | disable]

Description This command is used to configure the checking mechanism of

DHCP/BOOTP relay agent information option 82 of the switch.

Parameters enable – When the field is toggled to enable, the relay agent will check

the validity of the packet’s option 82 field. If the switch receives a packet

that contains the option 82 field from a DHCP client, the switch drops the

packet because it is invalid. In packets received from DHCP servers, the

relay agent will drop invalid messages.

disable - When the field is toggled to disable, the relay agent will not

check the validity of the packet’s option 82 field.

Restrictions Only administrator-level users can issue this command.

Purpose

Syntax

Example usage:

To configure DHCP relay option 82 check:

DGS-3400:4#config dhcp_relay option_82 check enable

Command: config dhcp_relay option_82 check enable

Success.

DGS-3400:4#

config dhcp_relay option_82 policy

Purpose Used to configure the reforwarding policy of relay agent information option

82 of the switch.

Syntax

config dhcp_relay option_82 policy [replace | drop | keep]

Description This command is used to configure the reforwarding policy of DHCP relay

agent information option 82 of the switch.

Parameters replace - The option 82 field will be replaced if the option 82 field already

exists in the packet received from the DHCP client.

drop - The packet will be dropped if the option 82 field already exists in the

packet received from the DHCP client.

keep - The option 82 field will be retained if the option 82 field already exists

in the packet received from the DHCP client.

Restrictions Only administrator-level users can issue this command.

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