540 Configuring Routing
•
Server Address —
The IPv4 address of the server to which packets are relayed for the specific UDP
Destination Port.
•
Hit Count —
The number of times a packet has been forwarded or discarded according to this entry.
•
Remove —
Removes the specified
UDP Relay
when selected and
Apply Changes
is pressed.
Adding an IP Helper Entry
1.
Open the IP Helper
Global Configuration
page
.
2.
Click
Add
to display the
Add Helper IP Address page
:
Figure 9-23. Add Helper IP Address
3.
Select a UDP Destination port name from the menu or enter the UDP Destination Port ID. Select the
Default Set to configure for the relay entry for the default set of protocols.
NOTE: If the DefaultSet option 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).
111 SUNRPC Sun Microsystems Rpc
123 NTP Network Time
137 NetBiosNameService NT Server to Station Connections
138 NetBiosDatagramService NT Server to Station Connections
139 NetBios SessionServiceNT Server to
Station Connections
161 SNMP Simple Network Management
162 SNMP-trap Simple Network Management
Tra ps
513 who Unix Rwho Daemon
514 syslog System Log
525 timed Time Daemon
Table 9-20. UDP Port Allocations
UDP Port Number Acronym Application
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