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Configuring System Information 165
4
Click
Apply Changes
.
The DHCP Server is added to the
DHCP Relay Table
.
Modifying a UDP Relay Table Entry
NOTE: If UDP relay is enabled, but no UDP port number is specified, the device by default forwards UDP
Broadcast packets for the following services: IEN-116 Name Service (port 42), DNS (port 53), NetBIOS
Name Server (port 137), NetBIOS Datagram Server (port 138), TACACS Server (port 49), and Time Service
(port 37)
1
Open the
UDP Relay
page
.
2
Define the fields.
3
Click
Apply Changes
.
The UDP entry is added to the
UDP Relay Table
, and the device is updated.
Deleting a UDP Relay Table Entry
1
Open the
UDP Relay
page.
2
Click
Show All
to display the
UDP Relay Table
page.
3
Select a UDP Relay server and check
Remove
.
4
Click
Apply Changes
.
The entry is deleted, and the device is updated.
Configuring the UDP Relay Table Using CLI Commands
The following table contains the CLI command for configuring the UDP Relay.
The following is an example of the CLI command:
Console (config-ip)# helper-address 172.16.9.9 49 53
Table 6-27. UDP Relay CLI Commands
CLI Command Description
helper-address
address
[
udp-port-list
]
Enables forwarding User Datagram
Protocol
(UDP) Broadcasts received on an interface.
This command does not enable forwarding
packets using BOOTP/DHCP. To forward
packets using BOOTP/DHCP, use the ip dhcp
relay enable, ip dhcp relay address and show
ip dhcp relay commands. For information
about these commands, see Defining DHCP
Relay Parameters.