Dasan V5808 - Option 82 Trust Policy; Default Trust Policy; Trusted Remote ID; Trusted Physical Port

UMN:CLI User Manual
V5808
346
8.5.6.4 Option 82 Trust Policy
Default Trust Policy
To specify the default trust policy for DHCP packets, use the following command.
Command
Mode
Description
trust default {deny | permit}
Option 82
Specifies the default trust policy for a DHCP packet.
If you specify the default trust policy as deny, the DHCP packet that carries the
information you specifies below will be permitted, and vice versa.
Trusted Remote ID
To specify a trusted remote ID, use the following command.
Command
Mode
Description
trust remote-id hex HEXSTRING
Option 82
Specifies a trusted remote ID.
trust remote-id ip A.B.C.D
trust remote-id text STRING
To delete a specified trusted remote ID, use the following command.
Command
Mode
Description
no trust remote-id hex HEXSTRING
Option 82
Deletes a specified trusted remote ID.
no trust remote-id ip A.B.C.D
no trust remote-id text STRING
Trusted Physical Port
To specify a trusted physical port, use the following command.
Command
Mode
Description
trust port PORTS {normal |
option82 | all}
Option 82
Specifies a trusted physical port.
normal: DHCP packet
option82: DHCP option 82 packet
all: DHCP + option 82 packet
no trust port {all | PORTS}
{normal | option82 | all}
Deletes a specified trusted port.
8.5.7 DHCP Snooping
For enhanced security, the V5808 provides the DHCP snooping feature. The DHCP
snooping filters untrusted DHCP messages and builds/maintains a DHCP snooping
binding table. The untrusted DHCP message is a message received from outside the
network, and an untrusted interface is an interface configured to receive DHCP messages
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