Cisco Systems DSC9148D8G48PK9 manual 1lists the default settings for port tracking parameters

Chapter 9 Configuring Port Tracking

Guidelines and Limitations

Figure 9-1 Traffic Recovery Using Port Tracking

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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 Cisco NX-OS 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 tracked port is used to alter the operational state of one or more ports. Fibre Channel, VSAN, PortChannel, FCIP, or a Gigabit Ethernet port can be tracked. Generally, ports in E and TE port modes can also be Fx ports.

•Linked ports—A port whose operational state is altered based on the operational state of the tracked ports. Only a Fibre Channel port can be linked.

Guidelines and Limitations

Before configuring port tracking, consider the following guidelines:

•Verify that the tracked ports and the linked ports are on the same Cisco MDS switch.

•Do not track a linked port back to itself (for example, Port fc1/2 to Port fc2/5 and back to Port fc1/2) to avoid recursive dependency.

•Be aware that the linked port is automatically brought down when the tracked port goes down. Be aware that the linked port is automatically brought down when the tracked port goes down.

Default Settings

Table 9-1lists the default settings for port tracking parameters.

Table 9-1	Default Port Tracking Parameters
Parameters		Default
Port tracking		Disabled.
Operational binding		Enabled along with port tracking.

Cisco MDS 9000 Family NX-OS Quality of Service Configuration Guide

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