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Cisco 12000/10700 v3.1.1 Router Manager User Guide
OL-4455-01
Chapter 10 Interface Performance
Ethernet Interface Performance
Step 2 Choose a Chassis, Module, and Ethernet Interface from the list boxes displayed at the left of the
window. The performance information for the selected interface appears.
Ethernet Interface Performance Window—Detailed Description
The Ethernet Interface Performance tab (see Figure 10-13 on page 10-19) displays two areas: General
Statistics and Collision Statistics.
General Statistics
The General Statistics area displays the following statistics:
Multiple Collision Frames—Count of frames transmitted across an interface where more than one
collision exists.
Frame Check Sequence Errors—Count of Frames received with Frame Check Sequence Error status.
Alignment Error—Count of Frames received with alignment errors.
Internal MAC Transmit Errors—Count of frames transmitted that failed due to an external transmit error.
Deferred Transmissions—Number of first transmissions attempts delayed because the medium was busy.
Frames Too Long—Number of frames transmitted, where the size of the frames are larger than the
permissible frame size.
Carrier Sense Errors—Number of times the carrier sense was lost while transferring frames.
Late Collisions—Number of collisions detected on the interface after the transmission of a packet.
Signal Quality Errors (SQE)—Count of SQE error messages generated by the interface.
Single Collision Frames—Count of frames transmitted across an interface with one collision.
Excessive Collisions—Number of times transmission failed due to excessive collision.
Internal MAC Receive Errors—Count of frames transmitted that failed due to an internal MAC receive
error.
Collision Statistics
The Collision Statistics area displays the following statistics:
Collision Count—Number of collisions per frame on a particular interface
Collision Frequency—The corresponding count of frames for the specified number of collisions.