Owner's Manual

IP Addressing Commands 169
The helper-address interface configuration command does not enable forwarding packets
using BOOTP/DHCP. To forward packets using BOOTP/DHCP, use the
ip dhcp relay enable
and ip dhcp relay address global configuration commands and the show ip dhcp relay
privileged EXEC command.
Example
The following example enables the software to forward UDP broadcasts on interface 1.100.100.0 to
IP address 172.16.9.9 to ports 49 and 53.
show ip helper-address
The show ip helper-address privileged EXEC command displays IP helper addresses configuration.
Syntax
show ip helper-address [ interface ]
•
interface —The IP interface.
Default Configuration
This command has no default configuration.
Command Mode
Privileged EXEC mode
User Guidelines
There are no user guidelines for this command.
Example
The following example displays configured IP helper addresses.
Console(config)# interface ip 1.100.100.0
Console (config-ip)# helper-address 172.16.9.9 49 53
Console# show ip helper-address
Interface Helper Address Udp port
--------------- --------------- ------------------------
192.168.1.1 172.16.8.8 37, 49, 53, 67, 68, 137, 138
192.168.2.1 172.16.9.9 37, 49