SignaMax SC30010, Справочное руководство CLI

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Chapter 9
| General Security Measures
DHCPv4 Snooping
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Command Usage
The format for TR101 option 82 is: “<IP> eth <SID>/<PORT>[:<VLAN>]”. Note
that the SID (Switch ID) is always 0. By default the PVID is added to the end of
the TR101 field for untagged packets. For tagged packets, the VLAN ID is
always added. Use the
ip dhcp snooping information option remote-id
tr101 no-vlan-field command to remove the VLAN ID from the end of the
TR101 field for untagged packets. Use the no form of this command to add
the PVID for untagged packets at the end of the TR101 field.
Example
This example sets the remote ID to the switch’s IP address.
Console(config)#ip dhcp snooping information option remote-id tr101
node-identifier ip
Console(config)#
ip dhcp snooping
information option
tr101 board-id
This command sets the board identifier used in Option 82 information based
on TR-101 syntax. Use the
no form to remove the board identifier.
Syntax
ip dhcp snooping information option tr101 board-id board-id
no ip dhcp snooping information option tr101 board-id
board-id – TR101 Board ID. (Range: 0-9)
Default Setting
not defined
Command Mode
Global Configuration
Example
This example sets the board ID to 0.
Console(config)#ip dhcp snooping information option tr101 board-id 0
Console(config)#
ip dhcp snooping
information policy
This command sets the DHCP snooping information option policy for DHCP
client packets that include Option 82 information.
Syntax
ip dhcp snooping information policy { drop | keep | replace }
drop - Drops the client’s request packet instead of relaying it.