3com 5500-ei pwr Guía De Referencia

 

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User view 

None 

Use the reset udp-helper packet command to clear UDP Helper statistics. 

# Clear UDP Helper statistics. 

<Sysname> reset udp-helper packet 

udp-helper enable 

undo udp-helper enable 

System view 

None 

Use the udp-helper enable command to enable UDP Helper function. After this function is enabled, 

the switch converts broadcasts containing the specified port numbers into unicasts and forwards them 

to the destination server. 

Use the undo udp-helper enable command to disable UDP Helper function. 

By default, UDP Helper is disabled. 

Note that: On an S5500-EI Series Ethernet Switch, the reception of directed broadcast packets to a 

directly connected network is disabled by default. As a result, UDP Helper is available only when the ip 

forward-broadcast command is configured in system view. For details about the ip 

forward-broadcast command, refer to the IP Address and Performance part of this manual. 

# Enable UDP Helper. 

<Sysname> system-view 

System View: return to User View with Ctrl+Z. 

[Sysname] udp-helper enable 

udp-helper port { port-number | dns | netbios-ds | netbios-ns | tacacs | tftp | time }