
show csmacd
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show csmacd
The show csmacd
<option>
commands display configuration, status, and statistical
information about the Carrier Sense Multiple Access with Collision Detection protocol
(CSMA/CD). Ethernet uses this protocol to control access to the medium. End stations use
CSMA/CD to monitor the medium and wait until it is idle before transmitting data. For
more information, refer to Configuring Line Services.
The
show csmacd command supports the following subcommand options:
alerts
Displays all circuits that are enabled but not up. Use this display to identify interfaces that
are not working. The table includes the following information:
alerts receive errors [circuit <circuit name>]
autoneg [circuit <circuit name>] sample [<period in seconds>] [circuit
<circuit name>]
base [circuit <circuit name>] stats [circuit <circuit name>]
collisions [circuit <circuit name>] system errors [circuit <circuit name>]
disabled transmit errors [circuit <circuit name>]
enabled version
hwfilters
Slot Slot identifier; ranges vary according to router model. For routers
other than the ASN, indicates the physical slot number.
Conn Connector’s instance identifier. For an Ethernet Link Module, the
range is 1 or 2. For a Net Module, the value is 11 to 44.
Circuit Name of the circuit associated with this line.
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