Virtual-Cable-Test - 3Com 7750 Series Command Reference Manual

3Com Switch 7750 Series
Command Reference Guide — Basic Port Commands
Description
Use the unicast-suppression command to set the size of unknown unicast traffic
allowed to be received on the current port.
Use the undo unicast-suppression command to restore the size of unknown unicast
traffic allowed to be received on the current port.
When incoming unknown unicast traffic on the port exceeds the threshold you set, the
system drops the packets exceeding the threshold to reduce the unknown unicast
traffic ratio to the reasonable range, so as to keep normal network service.
This function is disabled by default.
Caution:
Type-A LPUs (including 3C16860, 3C16861, 3C16858, and 3C16859) do not support
enabling unknown unicast suppression on a port.
Example
# Allow the incoming unknown unicast traffic on the Ethernet1/0/1 port to occupy at
most 20% of the bandwidth on the port.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface ethernet 1/0/1
[3Com-Ethernet1/0/1] unicast-suppression 20
# Set the maximum number of unknown unicast packets that can be forwarded per
second by Ethernet1/0/1 to 1,000 pps.
[3Com-Ethernet1/0/1] unicast-suppression pps 1000

1.1.35 virtual-cable-test

Syntax
virtual-cable-test
View
Ethernet port view
Parameter
None
Chapter 1 Port Basic Configuration Commands
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