Manual
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{ethernet <IFNAME> | <IFNAME>} 
packets. 
show ulpp flush-receive-port 
Show  flush  type  and  control  VLAN  received 
by the port. 
clear ulpp flush counter interface <name> 
Clear  the  statistic  information  of  the  flush 
packets. 
debug ulpp flush {send | receive} interface 
<name> 
no debug ulpp flush {send | receive} 
interface <name> 
Show  the  information  of  the  receiving  and 
sending  flush  packets,  the  no  operation 
disables the shown information. 
debug ulpp flush content interface <name> 
no debug ulpp flush content interface 
<name> 
Show  the  contents  of  the  received  flush 
packets,  the  no  operation  disables  the 
showing. 
debug ulpp error 
no debug ulpp error 
Show  the  error  information  of  ULPP,  the  no 
operation disables the showing. 
debug ulpp event 
no debug ulpp event 
Show  the  event  information of  ULPP,  the  no 
operation disables the showing. 
54.3 ULPP Typical Examples 
54.3.1 ULPP Typical Example1 
ULPP typical example1 
The above topology is the typical application environment of ULPP protocol. 
SwitchA has two uplinks, they are SwitchB and SwitchC. When any protocols are not enabled, 
this topology forms a ring. For avoiding the loopback, SwitchA can configure ULPP protocol, 
SwitchB E1/1 
SwitchD 
SwitchA 
E1/2 SwitchC 
E1/2 
E1/1 










