Displaying And Maintaining Udp Helper; Udp Helper Configuration Example; Cross-Network Computer Search Through Udp Helper - H3C S5100-SI Operation Manual

Displaying and Maintaining UDP Helper

To do...
Display the UDP broadcast
relay forwarding information of
a specified VLAN interface on
the switch
Clear statistics about packets
forwarded by UDP Helper

UDP Helper Configuration Example

Cross-Network Computer Search Through UDP Helper

Network requirements
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 the switch, so
that PC A can find PC B through computer search. (Broadcasts with UDP port 137 are used for
searching.)
Network diagram
Figure 1-1 Network diagram for UDP Helper configuration
Configuration procedure
# Enable UDP Helper on Switch A.
<Sysname> system-view
[Sysname] udp-helper enable
# Configure the switch 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.)
[Sysname] udp-helper port 137
# Specify the destination server IP address on Vlan-interface 1.
[Sysname] interface Vlan-interface 1
[Sysname-Vlan-interface1] udp-helper server 192.168.10.2
Use the command...
display udp-helper server
[ interface vlan-interface
vlan-id ]
reset udp-helper packet
1-3
Remarks
Available in any view
Available in user view