ZyXEL Communications IES-1248-51 Betriebsanweisung PDF herunterladen (Seite 221)

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101

Chapter 28 DHCP Relay

IES-1248-51V User’s Guide

221

Active This field displays whether or not the IES-1248-51V relays DHCP

requests in the selected VLAN to a DHCP server and the server’s

responses back to the clients.

Primary Server IP This field displays the IP address of one DHCP server to which the

IES-1248-51V should relay DHCP requests. If this is the active server

for the selected VLAN, it is marked with an asterisk (*).

Secondary Server

This field displays the IP address of a second DHCP server to which

the IES-1248-51V should relay DHCP requests. This field is 0.0.0.0 if

the primary server is the only DHCP relay. If this is the active server

for the selected VLAN, it is marked with an asterisk (*).

Relay Mode This field displays how the IES-1248-51V relays DHCP requests for

the selected VLAN.

Auto - The IES-1248-51V routes DHCP requests to the active server

for the VLAN.

Both - The IES-1248-51V routes DHCP requests to the primary and

secondary server for the VLAN, regardless of which one is active.

Option Mode This field displays the DHCP relay option 82 format (Private or TR-

101 mode) the IES-1248-51V uses to relay DHCP requests for the

selected VLAN. See Section 28.2 on page 217 for more information.

Option82 Sub-

option1

This field displays whether or not the IES-1248-51V adds the

originating port numbers (and any additional information) to DHCP

requests in the selected VLAN.

Option82 Sub-

option2

This field displays whether or not the IES-1248-51V adds the sub-

option 2 (and any additional information) to DHCP requests in the

selected VLAN.

Delete Select the check box next to the VLAN ID, and click Delete to remove

the entry.

Select All Click this to select all entries in the Server List.

Select None Click this to un-select all entries in the Server List.

Table 61 DHCP Relay (continued)

LABEL DESCRIPTION

1 2 ... 216 217 218 219 220 221 222 223 224 225 226 ... 653 654

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