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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 35-2
Example 35-2
displays the number of different types of iSCSI PDU received and transmitted by this IPS port.
Example 35-2 Display brief iSCSI statistics for an iSCSI interface
switch# show iscsi stats iscsi 2/1
iscsi2/1
bytes
Example 35-3
number of each iSCSI PDU types, it shows the number of FCP frames received and forwarded, the
number of iSCSI login attempt, succeed, and failure. 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 due to 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.
The last section, Buffer Stats, gives statistics of the internal IPS packet buffer operation. This section is
for debugging purposes only.
Example 35-3 Displays Detailed iSCSI Statistics for the iSCSI Interface
switch# show iscsi stats iscsi 2/1 detail
iscsi2/1
bytes
iSCSI Forward:
bytes
FCP Forward:
Cisco MDS 9000 Family Configuration Guide
35-30
Data-in 0 pdus, 0 bytes
and
Example
35-3.
displays iSCSI throughput on an IPS port in both inbound and outbound directions. It also
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
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
974454 packets input, 142656516 bytes
Command 2352 pdus, Data-out 44198 pdus, 92364800 bytes, 0 fragments, unsolicited 0
output 1022618 packets, 143431144 bytes
Response 2352 pdus (with sense 266), R2T 1804 pdus
Data-in 90453 pdus, 92458248 bytes
Command:2352 PDUs (Rcvd:2352)
Data-Out (Write):16236 PDUs (Rcvd 44198), 0 fragments, 92364800 bytes, unsolicited 0
Chapter 35
Configuring iSCSI
OL-6973-03, Cisco MDS SAN-OS Release 2.x
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