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.
This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.
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