Users Guide

Table Of Contents
Layer 3 Routing Commands 1518
IPv4-address—A valid, reachable IPv4 address on the switch.
Default Configuration
No DHCP Relay source interface is configured by default.
Command Mode
Global Configuration mode, Interface Configuration mode
User Guidelines
The ip dhcp relay source-interface command is used to specify an interface
whose IP address is passed as relay agent IP address. When the command is
used in global configuration mode, the source interface is set globally. When
the command is used in interface config mode, the source interface is set for
the specified interface only. If the source interface is set in interface config
mode, that value overrides the global configuration for the interface.
Command History
Command introduced in version 6.6.2 firmware.
ip helper-address (global configuration)
Use the ip helper-address (global configuration) command to configure the
relay of certain UDP broadcast packets received on any interface. To delete an
IP helper entry, use the no form of this command.
Syntax
ip helper-address
server-address
[
dest-udp-port
| dhcp | domain | isakmp |
mobile-ip | nameserver | netbios-dgm | netbios-ns | ntp | pim-auto-rp | rip
| tacacs | tftp | time]
no ip helper-address [
server-address
] [
dest-udp-port
| dhcp | domain |
isakmp | mobile-ip | nameserver | netbios-dgm | netbios-ns | ntp | pim-
auto-rp | rip | tacacs | tftp | time]
server-address
— The IPv4 unicast or directed broadcast address to which
relayed UDP broadcast packets are sent. The server address cannot be an
IP address configured on any interface of the local router.