Displaying Iscsi Statistics - Cisco MDS 9000 series Configuration Manual

Chapter 4 Configuring iSCSI
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m

Displaying iSCSI Statistics

Use the show iscsi stats command to view brief or detailed iSCSI statistics per iSCSI interface. See
Example 4-2
Example 4-2
displays the number of different types of iSCSI PDU received and transmitted by this IPS port.
Example 4-2
switch# show iscsi stats iscsi 2/1
iscsi2/1
bytes
Example 4-3
of each iSCSI PDU type, it shows the number of FCP frames received and forwarded, the number of
iSCSI login attempts, successes, and failures. It also shows the number of different types of iSCSI PDUs
sent and received that are noncritical or occur less frequently, such as NOP in and out (NOP-In and
NOP-Out), text request and response (Text-REQ and Text-RESP), and task management request and
response (TMF-REQ and TMF-RESP).
Various types of errors and PDU or frame drop occurrences are also counted and displayed. For example,
Bad header digest shows the number of iSCSI PDUs received that have a header digest that fails CRC
verification. The iSCSI Drop section shows the number of PDUs that were dropped because of reasons
such as target down, LUN mapping fail, Data CRC error, or unexpected Immediate or Unsolicited data.
These statistics are helpful for debugging purposes when the feature is not working as expected.
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)
PMTU discover is enabled, reset timeout is 3600 sec
Keepalive-timeout is 60 sec
Minimum-retransmit-time is 300 ms
Max-retransmissions 4
Sack is enabled
QOS code point is 0
Maximum allowed bandwidth is 1000000 kbps
Minimum available bandwidth is 70000 kbps
Estimated round trip time is 1000 usec
Send buffer size is 4096 KB
Congestion window monitoring is enabled, burst size is 50 KB
Configured maximum jitter is 500 us
Forwarding mode: store-and-forward
TMF Queueing Mode : disabled
Proxy Initiator Mode : disabled
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
iSCSI statistics
Input 0 packets, 0 bytes
Command 0 pdus, Data-out 0 pdus, 0 bytes
Output 0 packets, 0 bytes
Response 0 pdus (with sense 0), R2T 0 pdus
Data-in 0 pdus, 0 bytes
and Example 4-3.
displays iSCSI throughput on an IPS port in both inbound and outbound directions. It also
Display Brief iSCSI Statistics for an iSCSI Interface
5 minutes input rate 704 bits/sec, 88 bytes/sec, 1 frames/sec
5 minutes output rate 704 bits/sec, 88 bytes/sec, 1 frames/sec
iSCSI statistics
974756 packets input, 142671620 bytes
Command 2352 pdus, Data-out 44198 pdus, 92364800 bytes, 0 fragments, unsolicited 0
output 1022920 packets, 143446248 bytes
Response 2352 pdus (with sense 266), R2T 1804 pdus
Data-in 90453 pdus, 92458248 bytes
displays detailed iSCSI statistics for an IPS port. Along with the traffic rate and the number
Cisco MDS 9000 Family NX-OS IP Services Configuration Guide
Configuring iSCSI
4-31