
Using Technician Interface Scripts
2-176 117380-A Rev. A
collisions
[
circuit
<circuit name>
]
Displays status on bus collisions. You can display collision information for a specific
circuit or all circuits. The table includes the following information:
Sample Display - show csmacd collisions
CSMACD Module Collision Information:
------------------------------------
Single Multiple Late Late
Collision Collision Excessive Collision Collision
Slot Conn Circuit Frames Frames Collisions Transmit Receive
---- ---- -------- ---------- ---------- ---------- ---------- ----------
2 1 E21 0 0 0 0 0
5 1 E51 0 0 0 0 0
5 2 E52 0 0 0 0 0
3 entries in table.
Slot Slot identifier; ranges vary according to router model.
Conn Connector’s instance identifier; ranges vary according to router
model and Ethernet module. For routers other than ASN, indicates
the physical connector number on the slot.
Circuit Name of the circuit associated with this line.
Single Collision Frames Number of frames that encountered a single collision before it was
successfully transmitted. This is normal CSMA/CD activity.
Multiple Collision Frames Number of frames that encountered 2 to 16 collisions before they
were transmitted successfully. This could indicate a network
problem, or that the network is simply heavily loaded.
Excessive Collisions Number of frames that encountered more than 16 collisions and
were therefore not transmitted. The transmission is aborted and the
packet is dropped. This could indicate a network problem or be the
result of an overloaded network.
Late Collision Transmit Number of transmits that occur after an out-of-window collision.
These collisions usually indicate wiring or other hardware
problems.
Late Collision Receive Number of transmitter out-of-window collisions while receiving the
next packet. Usually indicates wiring or other hardware problems.
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