D-Link DGS-1510/ME Series Reference Manual page 201

DGS-1510/ME Series Metro Ethernet Switch CLI Reference Guide
If the relay servers are determined based on option 60 or option 61, then per IPIF configured servers will be
ignored.
If the relay servers are not determined either by option 60 or option 61, then per IPIF configured servers will be
used to determine the relay servers.
Format
config dhcp_relay option_61 state [enable | disable]
Parameters
enable - Specifies to enable the function DHCP relay use option 61 ruler to relay DHCP packet.
disable - Specifies to disable the function DHCP relay use option 61 ruler to relay DHCP packet.
Restrictions
Only Administrators, Operators and Power-Users can issue this command.
Example
To configure the state of DHCP relay option 61:
DGS-1510-28XMP/ME:admin# config dhcp_relay option_61 state enable
Command: config dhcp_relay option_61 state enable
Success
DGS-1510-28XMP/ME:admin#
20-17 config dhcp_relay option_61 add
Description
This command is used to add a rule to determine the relay server based on option 61. The match rule can base on
either MAC address or a user-specified string. Only one relay server can be specified for a MAC-address or a
string.
If relay servers are determined based on option 60, and one relay server is determined based on option 61, the
final relay servers will be the union of these two sets of the servers.
Format
config dhcp_relay option_61 add [mac_address <macaddr> | string <multiword 255>] [relay <ipaddr> | drop]
Parameters
mac_address - Specifies the client's client-ID which is the hardware address of client.
<macaddr> - Enter the client's MAC address here.
string - Specifies the client's client-ID, which is specified by administrator.
<multiword 255> - Enter the client's description here. This value can be up to 255 characters long.
relay - Specifies to relay the packet to a IP address.
<ipaddr> - Enter the IP address used for this configuration here.
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