Руководство По Проектированию для Cisco Cisco Nexus 5010 Switch

 

 

Design Guide 

© 2010 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. 

Page 21 of 38 

 

Figure 14.    Worst Case of Dual-Active Failure 

 

The object tracking feature available in NXOS can be used to associate the vPC status of a vPC device with the 

status of the interfaces that are tracked. The following explample clarifies. At the time of this writing Object Tracking is 

only available on the Cisco Nexus 7000 Series. 

You can use a single 10 Gigabit Ethernet card on the Cisco Nexus 7000 Series for both core connectivity and the 

peer link, but this is not the best option. If you lose the 10 Gigabit Ethernet card on the vPC primary device, you lose 

not only core connectivity, but also the peer link. As a result, ports will be shut down on the peer vPC device, isolating 

the servers completely. 

You can address this specific configuration requirement with a tracking configuration. The objects being tracked are 

the uplinks to the core and the peer link. If these links are lost, vPCs local to the switch are shut down so that traffic 

can continue on the vPC peer. 

To configure this feature, use the following command syntax: 

! Track the vpc peer link 

track 1 interface port-channel110 line-protocol 

 

! Track the uplinks to the core 

track 2 interface Ethernet7/9 line-protocol 

track 3 interface Ethernet7/10 line-protocol 

 

! Combine all tracked objects into one. 

! “OR” means if ALL object are down, this object will go down 

! --> we have lost all connectivity to the core and the peer link