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51-5
User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 51 Configuring Server Access Settings on Firewall Devices
DHCP Relay Page
DHCP Relay Page
Use the DHCP Relay page to configure DHCP relay services for security devices. Dynamic Host
Configuration Protocol (DHCP) relay passes DHCP requests received on one interface to an external
DHCP server located behind a different interface. To configure DHCP relay, you need to specify at least
one DHCP relay server and then enable a DHCP relay agent on the interface receiving DHCP requests.
Note You cannot enable a DHCP relay agent on an interface where a DHCP relay server is configured.
The DHCP relay agent works only with external DHCP servers; it will not forward DHCP requests to a
security appliance interface configured as a DHCP server.
Navigation Path
• (Device view) Select Platform > Device Admin > Server Access > DHCP Relay from the Device
Policy selector.
• (Policy view) Select PIX/ASA/FWSM Platform > Device Admin > Server Access > DHCP Relay
from the Policy Type selector. Select an existing policy from the Shared Policy selector, or create a
new one.
Field Reference
Add and Edit DHCP Relay Agent Configuration Dialog Boxes
Use the Add DHCP Relay Agent Configuration dialog box to configure and enable a DHCP relay agent
on an interface. Use the Edit DHCP Relay Agent Configuration dialog box to update an existing interface
relay agent.
Table 51-3 DHCP Relay Page
Element Description
DHCP Relay Agent table This table lists the interfaces on which DHCP relay is configured. Use
the Add Row, Edit Row, and Delete Row buttons to manage these
entries.
The Add Row button opens the Add DHCP Relay Agent Configuration
dialog box, while Edit Row opens the Edit DHCP Relay Agent
Configuration dialog box. See Add and Edit DHCP Relay Agent
Configuration Dialog Boxes, page 51-5 for more information.
DHCP Servers table This table lists the interfaces on which DHCP relay is configured. Use
the Add Row, Edit Row, and Delete Row buttons to manage these
entries.
The Add Row button opens the Add DHCP Relay Server Configuration
dialog box, while Edit Row opens the Edit DHCP Relay Server
Configuration dialog box. See Add and Edit DHCP Relay Server
Configuration Dialog Boxes, page 51-6 for more information.
Timeout (seconds) Specify the amount of time, in seconds, allowed for DHCP address
negotiation. Valid values range from 1 to 3600 seconds; the default
value is 60 seconds.