Managed Switch CLI Manual, Release 8.0
Routing Commands
4-27
v1.0, July 2009
IP Helper Commands
This section describes the commands to configure a DHCP relay agent with multiple DHCP server
addresses per routing interface, and to use different server addresses for client packets arriving on
different interfaces on the relay agent.
ip helper-address (Global Config)
Use the Global Configuration
ip helper-address
command to have the switch forward User
Datagram Protocol (UDP) broadcasts received on an interface. To disable the forwarding of
broadcast packets to specific addresses, use the no form of this command.
The
ip helper-address
command forwards specific UDP broadcast from one interface to another.
You can define many helper addresses but the total number of address-port pairs is limited to 128
for the whole device. The setting of a helper address for a specific interface has precedence over a
setting of a helper address for all interfaces. You cannot enable forwarding of BOOTP/DHCP
packets (ports 67,68) with this command. If you want to relay BOOTP/DHCP packets, use the
DHCP relay commands.
Term
Definition
Maximum Hop
Count
The maximum allowable relay agent hops.
Minimum Wait
Time (Seconds)
The minimum wait time.
Admin Mode
Indicates whether relaying of requests is enabled or disabled.
Server IP
Address
The IP address for the BootP/DHCP Relay server.
Circuit Id Option
Mode
The DHCP circuit Id option which may be enabled or disabled.
Requests
Received
The number or requests received.
Requests
Relayed
The number of requests relayed.
Packets
Discarded
The number of packets discarded.
Summary of Contents for FSM726v3 - ProSafe Fast Ethernet L2 Managed Switch
Page 4: ...v1 0 July 2009 iv...
