Digisol DG-FS4528P, Management Manual

Page: 239 / 973

C
HAPTER
7 | Security Measures
DHCP Snooping
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DHCP Snooping Information Option 82 Remote ID – Specifies the
frame format to use for the remote-id when Option 82 information is
generated by the switch.
MAC-HEX - Inserts a MAC address in the remote ID sub-option for
the DHCP snooping agent (that is, the MAC address of the switch’s
CPU in hexadecimal format). (This is the default setting.)
MAC-ACSII - Inserts a MAC address in the remote ID sub-option
for the DHCP snooping agent (that is, the MAC address of the
switch’s CPU in ASCII format).
IP-HEX - Inserts an IP address in the remote ID sub-option for the
DHCP snooping agent (that is, the IP address of the management
interface in hexadecimal format).
IP-ASCII - Inserts an IP address in the remote ID sub-option for
the DHCP snooping agent (that is, the IP address of the
management interface in ASCII format).
String - An arbitrary string inserted into the remote identifier field.
(Range: 1-32 characters)
DHCP Snooping Information Option Policy – Specifies how to
handle DHCP client request packets which already contain Option 82
information.
Drop – Drops the client’s request packet instead of relaying it.
Keep – Retains the Option 82 information in the client request, and
forwards the packets to trusted ports.
Replace – Replaces the Option 82 information circuit-id and
remote-id fields in the client’s request with information about the
relay agent itself, inserts the relay agent’s address (when DHCP
snooping is enabled), and forwards the packets to trusted ports.
(This is the default policy.)
W
EB
I
NTERFACE
To configure DHCP Snooping Option 82:
1. Click DHCP Snooping, Information Option Configuration.
2. Select the required options for the DHCP information option.
3. Click Apply