Brocade Communications Systems StoreFabric SN6500B Documentation Update page 51

If the command detects complete credit loss, it reports the information. If, in addition, you have enabled
link resets on backend ports, this command will perform a link reset on the link in an attempt to recover
from the problem. You must explicitly initiate this check and it is a one-time operation. In other words, this
command does not continuously monitor for credit loss in the background. Detection of credit loss takes
2-7 seconds, after which the results of the operation are displayed. A Link Reset also generates a
RASlog message.
NOTES
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The -check option is supported only on modular switches, and only on Condor 2-Condor 2 links between
Condor 2 core blades and Condor 2 port blades. AP blades are not supported.
OPERANDS
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backend port credit recovery commands
You can use the -intport option either with the -recover option to configure credit recovery options on a
back end port, or you can use it with the -check option to examine a port for credit loss. You cannot use
both options at the same time.
--cfgcredittools -intport -recover
--cfgcredittools -intport -check
--linkreset slot/blade_port
EXAMPLES
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Backend port credit recovery examples
To examine a backend port for credit loss:
Fabric OS Documentation Updates
53-1002063-09
Configures credit recovery options for backend ports. Use one of the following
required recovery options to configure credit recovery:
onLrOnly
Enables the backend port recovery feature in link reset mode.
onLrThresh
Enables the backend port recovery feature in link reset threshold mode.
off Disables the backend port credit recovery feature.
Performs the on-demand detection of credit loss on a given backend port and VC.
This operand is optional and exclusive; when you specify this option you cannot
use the --cfgcredittools -intport -recover options at the same time. You must
specify a port and a VC, separated by a comma. A space before the comma is not
permitted.
slot/blade_port Specifies the backend port that is to be examined for credit loss. The port number
must be the blade port number, since this is a backend port. The blade port
number can be located in the Bpt column output of the bladeportmap command.
Note that the bladeportmap command requires root permissions.
VC Specifies the Virtual Channel number. The valid range is 1 to 31.VC 0 is invalid.
Performs a link reset on the specified front-end or backend blade port. The blade
port number can be located in the "Bpt" column output of the bladePortMap
command. The bladeportmap command requires root permissions.
switch:admin> bottleneckmon --cfgcredittools \
-intport -check
Started Credit loss Detection on slot 10 port 4 VC 30.
Please wait....
Detected credit loss.
Link Reset performed.
10/4,30
5
bottleneckMon
39