Using Debug Commands - Cisco MDS 9124 - Fabric Switch Reference

Using Debug Commands

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
Table 1-7 Valid Formats and Ranges (continued)
Address Description
Fabric Analyzer An example of 10 frames, limits the number of frames
captures captured to 10.
FCIP profile Integer that specifies the FCIP profile
TCP retransmit time Integer that specifies the minimum retransmit time for
the TCP connection in milliseconds
Keepalive timeout Integer that specifies the TCP connection's keepalive
timeout in seconds.
TCP retransmissions Integer that specifies the maximum number of TCP
transmissions.
PMTU Integer that specifies the path MTU reset time in
seconds
TCP buffer size Integer that specifies the advertised TCP buffer size in
KB.
Traffic burst size Integer that specifies the maximum burst size in KB. 30
Peer TCP port Integer that specifies the TCP port number
Acceptable time Integer that specifies the acceptable time difference in
difference milliseconds for a packet being accepted.
iSCSI pWWN Integer that specifies the number of pWWNs that
allocation must be allocated to an iSCSI initiator.
CDP refresh and Integer that specifies the refresh time interval and the
hold time hold time in seconds for the CDP protocol.
Using Debug Commands
Because debugging output is assigned high priority in the CPU process, it can render the system
Caution
unusable. For this reason, use debug commands only to troubleshoot specific problems or during
troubleshooting sessions with Cisco technical support staff. Moreover, it is best to use debug commands
during periods of lower network traffic and fewer users. Debugging during these periods decreases the
likelihood that increased debug command processing overhead will affect system use.
All debug commands are entered in privileged EXEC mode, and most debug commands take no
arguments. Use the show debugging command to display the state of each debugging option.
To list and see a brief description of all the debugging command options, enter the command debug ? at
the command line in privileged EXEC mode. For example:
switch# debug ?
Not all debugging commands listed in the debug ? output are described in this document. Commands
are included here based on their usefulness in assisting you to diagnose network problems. Commands
not included are typically used internally by Cisco engineers during the development process and are not
intended for use outside the Cisco environment.
Cisco MDS 9000 Family Command Reference
1-40
Chapter 1
Valid Format Example
10
101
300
60
6
90
5000
3000
4000
2
60
OL-16217-01, Cisco MDS SAN-OS Release 3.x
CLI Overview
Range
0 to 2147483647
1 to 255
250 to 5000
1 to 7200
1 to 8
60 to 3600
0 to 8192
10 to 100
0 to 65535
1 to 60,000
1 to 64
5 to 255