WaveRider LMS4000 User Manual page 250

• The CCU maintains a transmit queue for each EUM. The length of this queue is
limited, to keep one EUM from consuming all the resources and impacting other
EUMs. Discards indicate excessive load by one EUM, possibly due to large TCP
windows.
• Registration occurs once per EUM and/or CCU boot time. Deregistration may occur if
an EUM is not authorized (a registration/deregistration request pair occurs periodically
while that EUM is powered ON) or if the EUM does not respond to multiple
consecutive polls, such as when it is powered OFF.
• Association occurs when there is traffic to send to or from an EUM. Disassociation
occurs if there is no traffic to or from an EUM for a short period of time.
To view the MAC Interface Statistics:
CCU> stats mac
----------------- MAC Interface Statistics --------------------
Rx Data Payloads
Rx Ctrl Payloads
Rx Payload Fail Invalid Type
Rx Payload Fail Giant
Null Rx Descriptors
Tx Data Payloads
Tx Ctrl Payloads
Tx Payload Fail Invalid Type
Tx Payload Fail Giant
Tx Payload Fail Invalid Desc
Atmel Tx Buffer full on arrival : 0
Command time outs
Command missed IRQs
False Command IRQs
Command Status Errors
Atmel Fatal Errors
Unused statistic
txPayloadsFailAssocDeleted:
txPayloadsFailBadParam:
txPayloadsFailVnetInactive:
txPayloadsFailAssocFail:
txPayloadsFailTimeout:
232
: 132323
: 5702
: 0
: 0
: 0
: 138245
: 5702
: 0
: 0
: 0
: 0
: 0
: 1766
: 0
: 0
: 0
rxPktsDirected:
rxPktsBroadcast:
rxPktsNoMatch:
rxPktsDuplicate:
rxPktsRuntFail:
rxPktsLongFail:
rxPktsHCRCFail:
rxPktsICVFail:
rxPktsFCSFail:
rxPktsAssocFail:
rxPktsIncomplete:
rxPayloadsFailFull:
rxPayloadsDelivered:
rxPktsEmpty:
txPkts:
txPktsEmpty:
txPayloads:
txPayloadsBCast:
txPayloads1Ok:
txPayloads2Ok:
txPayloads3Ok:
txPayloads4Ok:
txPayloadsFailRetry:
2765984
2163
0
733
0
0
151
0
23
0
0
0
138025
2635068
16960762
16804869
155893
2040
131286
9423
1027
133
27
11
0
0
0
0
APCD-LM043-4.0