SMC Networks TigerAccess SMC7816M Manuel d'utilisateur télécharger pdf (Page 922)

100

101

DHCP C

OMMANDS

37-4

Example

ip dhcp information option

This command enables DHCP Option 82 information relay, and specifies

the frame format to use when Option 82 information is generated by the

switch. Use the no form of this command to disable this feature.

Syntax

ip dhcp information option {circuit-id | remote-id}

no ip dhcp information option

• circuit-id - Includes fields which identify the incoming circuit,

including the VLAN, stack unit, and port.

• remote-id - Includes a MAC address field for the relay agent (that

is, the MAC address of the switch’s CPU).

Default Setting

Disabled

Command Mode

Global Configuration

Usage Guidelines

• DHCP provides a relay agent information option for sending

information about its DHCP clients to the DHCP server. Also

known as DHCP Option 82, it allows compatible DHCP servers to

use this information when assigning IP addresses, or to set other

services or policies for clients.

• When Option 82 is enabled, the requesting client (or an intermediate

relay agent that has used the information fields to describe itself) can

be identified in the DHCP request packets forwarded by the switch

and in reply packets sent back from the DHCP server. Depending

on the selected option frame format, this information may specify

the circuit which received the request (including VLAN, stack unit,

and port), or just the MAC address of the requesting device.

Console(config)#ip dhcp relay server 192.168.10.19

Console(config)#

1 2 ... 917 918 919 920 921 922 923 924 925 926 927 ... 961 962

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SMC Networks TigerAccess SMC7816M Manuel d'utilisateur Page 922

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