High Availability For Stp - Cisco Nexus 9000 Series Configuration Manual

High Availability for STP

High Availability for STP
The software supports high availability for STP. However, the statistics and timers are not restored when STP
restarts. The timers start again and the statistics begin from 0.
Note See the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide, for complete information
on high-availability features.
Licensing Requirements for STP Extensions
The following table shows the licensing requirements for this feature:
Product
Cisco NX-OS
Prerequisites for STP Extensions
STP has the following prerequisites:
• You must be logged onto the device.
• You must have STP configured already.
Guidelines and Limitations for Configuring STP Extensions
STP extensions have the following configuration guidelines and limitations:
• show commands with the internal keyword are not supported.
• Connect STP network ports only to switches.
• You should configure host ports as STP edge ports and not as network ports.
• If you enable STP network port types globally, ensure that you manually configure all ports connected
• You should configure all access and trunk ports connected to Layer 2 hosts as edge ports.
• Bridge Assurance runs only on point-to-point spanning tree network ports. You must configure each
• We recommend that you enable Bridge Assurance throughout your network.
Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
158
to hosts as STP edge ports.
side of the link for this feature.
Configuring STP Extensions Using Cisco NX-OS
License Requirement
STP extensions require no license. Any feature not
included in a license package is bundled with the
Cisco NX-OS system images and is provided at no
extra charge to you.