Displays real-time collision statistics.
|
mgmt |
Specifies the management port. |
|
port_list |
Specifies one or more ports or slots and ports. |
|
tag |
Specifies an 802.1Q or 802.1ad tag value. |
|
no-refresh |
Specifies a static snapshot of data. |
| refresh | Continuous refresh of output. |
Real-time statistics.
If you do not specify a port number, range of ports, or tag value, statistics are displayed for all ports. To clear the counters, use the clear counters ports command. The default display is a constantly refreshing real-time display. If you specify the no-refresh parameter, the system displays a snapshot of the data at the time you issue the command.
The tag value may be associated with either a VMAN or a VLAN (Virtual LAN).
This status information may be useful for your technical support representative if you have a network problem.
The following command displays real-time collision statistics on ports 1 and 2 on a switch:
show ports 1-2 collisions
Following is sample output from this command:
Port Collision Monitor Port Link Collision Histogram State 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ================================================================================ 1 A 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 R 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ================================================================================ Link State: A-Active R-Ready, NP-Port not present, L-Loopback
The numbers 1 to 16 represent the number of collisions encountered prior to successfully transmitting the packet; this is applicable only for half-duplex links.
This command was first available in ExtremeXOS 10.1.
The no-refresh variable was added in ExtremeXOS 11.3.
The tag value was added in ExtremeXOS 12.4.4.
The refresh keyword was added in ExtremeXOS 16.1.
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