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NS3000/iX IEEE 802.5 Link Statistics
The following section describes the data that is output when you issue
the LINKCONTROL command to obtain statistics relating to NS3000/iX IEEE
802.5 Links.
LINKSTATE Parameter Fields
Figure A-8 provides an example of the data that is displayed when you
issue the LINKCONTROL linkname;STATUS=LINKSTATE command:
Linkname: TR1 Linktype: IEEE8025 Linkstate: CONNECTED
Figure A-8. LINKSTATE Command for IEEE 802.5 Link
Linkname. The Linkname field specifies the name of the link.
Linktype. The Linktype field specifies the type of link, such as LAP-B
or IEEE 802.5, that is being monitored.
Linkstate. The Linkstate field specifies the current state of the link.
The possible link states are as follows:
* Connected
* Not connected
* Retry
CONFIGURATION Parameter Fields
The CONFIGURATION parameter for IEEE 802.5 links displays several fields
in addition to the LINKSTATE parameter field. Figure A-9 provides an
example of the data that is displayed when you issue the LINKCONTROL
linkname;STATUS=CONFIGURATION command:
Physical Path: 48 Data Rate: 16 Mbps
Current Station Address: 10-00-90-90-C8-46
Default Station Address: 10-00-90-90-C8-46
Functional Address Mask: 00-00-00-00
Figure A-9. IEEE 802.5 CONFIGURATION Parameter Output
Physical Path. The Physical Path field displays the current physical
path for the Token Ring card as specified in the NMMGR configuration
file.
Data Rate. The data rate that the card is configured to operate at.
This is set to either 4 or 16 Mbps by a jumper on the card.
Current Station Address. The Current Station Address field is a display
of the six (6) byte address to which the node is configured to respond.
This address is used whenever frames are sent to the network media. The
default station address is used unless it is overridden in the NMMGR link
configuration screen. If this field is changed, then the station address
of this node is changed. Make sure that you note this new address in the
system manager log.
Default Station Address. The Default Station Address field is the
default value for the Current Station Address described above. The
default station address is determined by the specific Token Ring card.
Functional Address Mask. Bits set in this 4 octet field indicate
functional addresses to which the Token Ring card may respond.
STATISTICS Parameter Fields
The STATISTICS parameter for IEEE 802.5 links displays many fields in
addition to the LINKSTATE parameter fields. The CONFIGURATION parameter
fields are not displayed when this parameter is used. Figure A-10
provides an example of the data that is displayed when you issue the
LINKCONTROL linkname;STATUS=STATISTICS command:
Physical Path: 48 Data Rate: 16 Mbps
Transmits no error: 0 Receives no error: 0
Transmit byte count: 0 Receive byte count: 0
Transmit errors: 0 Receive errors: 0
Figure A-10. IEEE 802.5 STATISTICS Parameter Fields
This command displays statistics about data transmitted across the link.
All field values are summations. Over time, the values in these fields
reach their maximum possible value. When this occurs, these fields can
only be reset manually.
Transmits no error. The Transmits no error field specifies the number of
frames that were successfully transmitted onto the medium. The maximum
value of this 32-bit field is 4294967295.
Receives no error. This field specifies the number of frames that were
successfully received over the medium. The maximum value of this 32-bit
field is 4294967295.
Transmit byte count. This field specifies the transmit byte count.
Receive byte count. This field specifies the receive byte count.
Transmit errors. The Transmit errors field specifies the number of
transmission errors sent across the link. The value in this field
specifies the number of frames which, due to errors on the link, were
never transmitted.
Receive errors. The Receive errors field specifies the number of
transmission errors that were received from the link. The value in this
field specifies the number of frames which were received, but were
corrupted due to errors on the link. This value includes all frames
which were discarded because of the setting of the current receive
filter.