Cisco Cisco Nexus 5010 Switch Guía De Diseño
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Figure 10. Summary vPC Best Practices
Spanning Tree Best Practices
This section summarizes the best practices for spanning-tree configurations in the presence of vPCs. For more
details, see “Spanning Tree Design Guidelines for Cisco NX-OS Software and Virtual PortChannels,” Chapter 4 in
details, see “Spanning Tree Design Guidelines for Cisco NX-OS Software and Virtual PortChannels,” Chapter 4 in
this guide.
When configuring spanning tree with a Cisco Nexus 7000 Series vPC deployment, remember that for vPC member
ports only, the vPC operational primary device generates and processes BPDUs. Also remember that the vPC peer
link is always forwarding, no matter which connectivity you put in place.
Spanning-tree best practices for a vPC configuration are as follows:
●
Choose the spanning-tree algorithm, keeping in mind that Multiple Spanning Tree (MST) scales better, but
that Rapid Per-VLAN Spanning Tree Plus (Rapid PVST+) is easier to deploy.
●
Verify the VLAN range that is used in the topology and make sure that all devices are configured for the
VLAN range that is common to all platforms. Cisco NX-OS platforms support this VLAN range:
1-3967,4048-4093.
●
Be mindful of non-vPC ports (orphaned ports) and consider the topology behavior for these ports when the
peer link is lost.