HP Cisco MDS 9216i Cisco MDS 9000 Family Fabric Manager Configuration Guide - - Page 1338

Default Port Tracking Settings Chapter 65 Configuring Port Tracking Send documentation comments to [email protected] About Monitoring Ports in a VSAN You can optionally configure one VSAN from the set of all operational VSANs on the tracked port with the linked port by specifying the required VSAN. This level of flexibility provides higher granularity in tracked ports. In some cases, when a tracked port is a TE port, the set of operational VSANs on the port can change dynamically without bringing down the operational state of the port. In such cases, the port VSAN of the linked port can be monitored on the set of operational VSANs on the tracked port. If you configure this feature, the linked port is up only when the VSAN is up on the tracked port. Tip The specified VSAN does not have to be the same as the port VSAN of the linked port. Monitoring Ports in a VSAN To monitor a tracked port in a specific VSAN, see "Operationally Binding a Tracked Port" section on page 65-3. About Forceful Shutdown If a tracked port flaps frequently, then tracking ports using the operational binding feature may cause frequent topology change. In this case, you may choose to keep the port in the down state until you are able to resolve the reason for these frequent flaps. Keeping the flapping port in the down state forces the traffic to flow through the redundant path until the primary tracked port problems are resolved. When the problems are resolved and the tracked port is back up, you can explicitly enable the interface. Tip If you configure this feature, the linked port continues to remain in the shutdown state even after the tracked port comes back up. You must explicitly remove the forced shut state (by administratively bringing up this interface) of the linked port once the tracked port is up and stable. Forcefully Shutting Down a Tracked Port To forcefully shut down a tracked port, see "Operationally Binding a Tracked Port" section on page 65-3. Default Port Tracking Settings Table 65-1 lists the default settings for port tracking parameters. Table 65-1 Default Port Tracking Parameters Parameters Port tracking Operational binding Default Disabled. Enabled along with port tracking. 65-6 Cisco MDS 9000 Family Fabric Manager Configuration Guide OL-17256-03, Cisco MDS NX-OS Release 4.x