Dell PowerEdge M805 - Manual (Page 326)

308 IP Addressing Commands
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The setting of helper address for specific interface has precedence over a setting of helper
address for all the interfaces. You can’t enable forwarding of BOOTP/DHCP (ports 67,68)
with this command. If you want to relay BOOTP/DHCP packets use the DHCP relay
commands.
The ip helper-address command specifies a UDP port number for which UDP broadcast
packets with that destination port number are forwarded. By default, if no UDP port number
is specified, the device forwards UDP broadcast packets for the following six services:
• IEN-116 Name Service (port 42)
• DNS (port 53)
• NetBIOS Name Server (port 137)
• NetBIOS Datagram Server (port 138)
• TACACS Server (port 49)
• Time Service (port 37)
Example
console(config)#ip helper-address 131.108.1.27 10.1.1.1 80,100-
120,201
ip host
Use the ip host command in Global Configuration mode to define static host name-to-address
mapping in the host cache. To delete the name-to-address mapping, use the no form of this
command.
Syntax
ip host name address
no ip host name
• name—Host name.
• address—IP address of the host.
Default Configuration
No host is defined.
Command Mode
Global Configuration mode
User Guidelines
This command has no user guidelines.