Displaying and Maintaining UDP Helper

To do…

Use the command…

Remarks

Display the UDP broadcast relay

display udp-helper server

 

forwarding information of a specified

Available in any view

VLAN interface on the device

[ interface vlan-interface vlan-id]

 

 

 

 

 

 

Clear statistics about packets

reset udp-helper packet

Available in user view

forwarded by UDP Helper

 

 

 

 

 

UDP Helper Configuration Example

Cross-Network Computer Search Through UDP Helper

Network requirements

As shown in Figure 1-1, PC A resides on network segment 192.168.1.0/24 and PC B on 192.168.10.0/24; they are connected through Switch A and are routable to each other. It is required to configure UDP Helper on Switch A, so that PC A can find PC B through computer search. (Broadcasts with UDP port 137 are used for searching.)

Figure 1-1Network diagram for UDP Helper configuration

Configuration procedure

# Enable UDP Helper on Switch A.

<SwitchA> system-view

[SwitchA] udp-helper enable

#Configure Switch A to forward broadcasts containing the destination UDP port number 137. (By default, the device enabled with UDP Helper forwards the broadcasts containing the destination UDP port number 137.)

[SwitchA] udp-helper port 137

# Specify the destination server IP address on Vlan-interface 1.

[SwitchA] interface vlan-interface 1

[SwitchA-Vlan-interface1] udp-helper server 192.168.10.2

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3Com WX3000 Displaying and Maintaining UDP Helper, UDP Helper Configuration Example, # Enable UDP Helper on Switch a