Configuring Port Tracking - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Configuring Port Tracking

In the following figure, when the direct link 1 to the host fails, recovery can be immediate. However, when
the ISL 2 fails between the two switches, recovery depends on TOVs, RSCNs, and other factors.
Figure 78: Traffic Recovery Using Port Tracking
The port tracking feature monitors and detects failures that cause topology changes and brings down the links
connecting the attached devices. When you enable this feature and explicitly configure the linked and tracked
ports, the switch software monitors the tracked ports and alters the operational state of the linked ports on
detecting a link state change.
The following terms are used in this chapter:
• Tracked ports—A port whose operational state is continuously monitored. The operational state of the
• Linked ports—A port whose operational state is altered based on the operational state of the tracked
Port tracking has the following features:
• The application brings the linked port down when the tracked port goes down. When the tracked port
• You can forcefully continue to keep the linked port down, even though the tracked port comes back up.
Related Topics
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Configuring Port Tracking
Before configuring port tracking, consider the following guidelines:
• Verify that the tracked ports and the linked ports are on the same Cisco switch.
• Be aware that the linked port is automatically brought down when the tracked port goes down.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
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tracked port is used to alter the operational state of one or more ports. Fibre Channel, VSAN, SAN port
channel, or a Gigabit Ethernet port can be tracked. Generally, ports in E and TE port modes can also be
F ports.
ports. Only physical Fibre Channel ports can be linked ports.
recovers from the failure and comes back up again, the linked port is also brought up automatically
(unless otherwise configured).
In this case, you must explicitly bring up the linked port when required.
About RSCN Information, page 596
Fibre Channel Timeout Values, page 607
Configuring Port Tracking
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