Chapter 5
Setup and Configuration
RUGGEDCOM ROX II
User Guide
312
Enabling/Disabling the DHCP Relay Support
1
Figure 328: Dynamic Host Control Protocol (DHCP) server Form
1.
Enabled Check Box
3. Configure the following parameter(s) as required:
Parameter
Description
enabled
Enables and disables the the DHCP server.
4. Click
Commit
to save the changes or click
Revert All
to abort. A confirmation dialog box appears. Click
OK
to proceed.
5. Click
Exit Transaction
or continue making changes.
Section 5.15.3
Enabling/Disabling the DHCP Relay Support
If DHCP relay (or Option 82) clients are used on the same subnet as the DHCP server, some clients will try to
renew a lease immediately after receiving it by requesting a renewal directly from the DHCP server. Because the
DHCP server is configured by default to only provide the lease through a relay agent configured with the current
Option 82 fields, the server sends the client a NAK protocol message to disallow the lease. Enabling Option
82 disables the NAK protocol message so that the renewal request sent from the DHCP relay agent (which the
DHCP server accepts since it has the correct Option 82 fields added) is the only message for which the client
receives a reply.
NOTE
Option 82 support should only be enabled If the DHCP server and clients are on the same subnet.
NOTE
The meaning of most Option 82 fields is determined by the DHCP relay client. To determine which
values are required by the client for special options, refer to the client documentation.
NOTE
DHCP relay support can also be enabled on an individual subnet. For more information, refer to
Section 5.15.7.3, “Configuring Subnet Options”
To enable or disable DHCP relay support on the DHCP server, do the following:
1. Change the mode to
Edit Private
or
Edit Exclusive
.
2. Navigate to
services
»
dhcpserver
»
options
. The
Client Options
form appears.
Содержание RUGGEDCOM RX1510
Страница 32: ...RUGGEDCOM ROX II User Guide Preface Customer Support xxxii ...
Страница 44: ...RUGGEDCOM ROX II User Guide Chapter 1 Introduction User Permissions 12 ...
Страница 62: ...RUGGEDCOM ROX II User Guide Chapter 2 Using ROX II Using the Command Line Interface 30 ...
Страница 268: ...RUGGEDCOM ROX II User Guide Chapter 4 System Administration Deleting a Scheduled Job 236 ...
Страница 852: ...RUGGEDCOM ROX II User Guide Chapter 5 Setup and Configuration Enabling Disabling an LDP Interface 820 ...