Edge-Core AS5700-54X, Справочное руководство CLI, Страница: 285 / 1116

Chapter 8
| General Security Measures
DHCPv4 Snooping
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Command Usage
See the Command Usage section under the ip dhcp snooping information option
circuit-id command for a description of how these fields are included in TR-101
syntax.
E
XAMPLE
This example enables the use of sub-type and sub-length fields for the
circuit-ID (CID) and remote-ID (RID).
Console(config)#no ip dhcp snooping information option encode no-subtype
Console(config)#
ip dhcp snooping
information option
remote-id
This command sets the remote ID to the switch’s IP address, MAC address, arbitrary
string, or TR-101 compliant node identifier. Use the
no form to restore the default
setting.
Syntax
ip dhcp snooping information option remote-id
{ ip-address [ encode { ascii | hex }] |
mac-address [ encode { ascii | hex }] | string }
no ip dhcp snooping information option remote-id
[ ip-address encode ] | [ mac-address encode ]
mac-address - 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).
ip-address - Inserts an IP address in the remote ID sub-option for the DHCP
snooping agent (that is, the IP address of the management interface).
encode - Indicates encoding in ASCII or hexadecimal.
string - An arbitrary string inserted into the remote identifier field.
(Range: 1-32 characters)
Default Setting
MAC address (hexadecimal)
Command Mode
Global Configuration
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)#