180 Brocade MLXe Series Hardware Installation Guide
53-1003030-01
Monitoring Link Status
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• The slot-number parameter indicates the slot number for which you are re-enabling the power.
You can specify 1 – 4 for 4-slot routers, 1 – 8 for 8-slot routers, 1 – 16 for 16-slot routers, or 1
– 32 for 32-slot routers.
• The all parameter allows you to power on all interface modules.
Monitoring Link Status
Software and hardware error conditions can bring down fabric links. When all links connecting a
traffic manager to a backplane are down, the traffic manager will drop incoming traffic. If the port
is still up, the traffic manager will continue to drop data. NetIron R05.3.00 and later solve this
problem continuously running a software task on the LP that monitors link status. If it detects that
if the fabric links between the traffic manager and the backplane are down, the software shuts
down the ports connected to that traffic manager, resulting in no continuous traffic drop. If all of
the following criteria are met, the software brings the ports back up:
• all the links come back up
• at least 30 percent of the total links are in the “up” state
• the port is enabled and there are no additional blocking conditions
Enabling monitoring link status
This feature is included by default in NetIron R05.3.00 and later; no configuration is required to
enable it.
Disabling monitoring link status
To disable the link status monitoring feature, enter the following command:
no system-monitoring tm port-control
Displaying fabric link status
To display the fabric link status, enter the following command:
MLX#show sfm-links 1
SFM#/FE# | FE link# | LP#/TM# | TM link# | link state
----------+-----------+---------+-----------+---------
1 / 1 | 13 | 2 / 1 | 13 | UP
1 / 1 | 17 | 2 / 2 | 01 | DOWN
1 / 1 | 14 | 2 / 1 | 01 | UP
Syntax: show sfm-links sfm-number | all [ errors ]
The sfm-number variable specifies an SFM that you want to display link information for.
The all option displays link information for all SFMs in the chassis.
The errors option only displays information for SFM links that are in the DOWN state.
The output of this command can also be filtered using an output modifier. To use an output
modifier, type a vertical bar ( | ) followed by a space and one of the following parameters:
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