Cisco MDS 9000 Series Configuration Manual page 162

Information About Congestion Detection
• Display of TxWait, RxWait, and percentage Tx credits not available for the last 1 second, 1 minute,
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
144
switch# show interface fc1/13 counters
fc1/13
5 minutes input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
5 minutes output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
0 frames input, 0 bytes
0 class-2 frames, 0 bytes
0 class-3 frames, 0 bytes
0 class-f frames, 0 bytes
0 discards, 0 errors, 0 CRC/FCS
0 unknown class, 0 too long, 0 too short
0 frames output, 0 bytes
0 class-2 frames, 0 bytes
0 class-3 frames, 0 bytes
0 class-f frames, 0 bytes
0 discards, 0 errors
0 timeout discards, 0 credit loss
0 input OLS, 0 LRR, 0 NOS, 0 loop inits
0 output OLS, 0 LRR, 0 NOS, 0 loop inits
0 link failures, 0 sync losses, 0 signal losses
0 Transmit B2B credit transitions to zero
0 Receive B2B credit transitions to zero
0 2.5us TxWait due to lack of transmit credits
Percentage Tx credits not available for last 1s/1m/1h/72h: 0%/0%/0%/0%
32 receive B2B credit remaining
31 transmit B2B credit remaining
31 low priority transmit B2B credit remaining
Last clearing of "show interface" counters: 2d00h
Transmit B2B credit transitions to zero – Count of times the interface was at zero
Tx B2B credits remaining and unable to transmit. This could be because the adjacent
device was withhold B2B credits from this interface or it could be because credits
(or frames which should have generated credits) were lost.
Receive B2B credit transitions to zero – Count of times the interface was at zero
Rx B2B credits remaining. This is due to this interface withholding B2B credits.
1 hour, and 72 hour—You can display this information using the show interface counters detailed
command.
switch# show interface fc1/1 counters
fc1/1
5 minutes input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
5 minutes output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
27651428465 frames input, 59174056872960 bytes
0 class-2 frames, 0 bytes
0 class-3 frames, 59174056872960 bytes
0 class-f frames, 0 bytes
0 discards, 0 errors, 0 CRC/FCS
0 unknown class, 0 too long, 0 too short
907817 frames output, 1942720200 bytes
0 class-2 frames, 0 bytes
907817 class-3 frames, 1942720200 bytes
0 class-f frames, 0 bytes
14713116 discards, 0 errors
14713116 timeout discards, 18 credit loss
0 input OLS, 18 LRR, 0 NOS, 0 loop inits
0 output OLS, 0 LRR, 0 NOS, 0 loop inits
0 link failures, 0 sync losses, 0 signal losses
903218 Transmit B2B credit transitions to zero
743093 Receive B2B credit transitions to zero
Congestion Detection, Avoidance, and Isolation