Default Settings For Mst - Cisco Nexus 9000 Series Configuration Manual
Nx-os layer 2 switching configuration
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- Configuration manual (562 pages) ,
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Configuring MST Using Cisco NX-OS
Default Settings for MST
This table lists the default settings for MST parameters.
Table 12: Default MST Parameters
Parameters
Spanning tree
Spanning tree mode
Name
VLAN mapping
Revision
Instance ID
MSTIs per MST region
Bridge priority (configurable per CIST port)
Spanning tree port priority (configurable per CIST
port)
Spanning tree port cost (configurable per CIST port)
Hello time
Forward-delay time
Maximum-aging time
Maximum hop count
Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
Default Settings for MST
Default
Enabled
Rapid PVST+ is enabled by default
Changing the spanning tree mode disrupts
Caution
the traffic because all spanning tree
instances are stopped for the previous
mode and started for the new mode.
Empty string
All VLANs mapped to a CIST instance
0
Instance 0; VLANs 1 to 3967 are mapped to Instance
0 by default
65
32768
128
Auto
The default port cost is determined by the port speed
as follows:
• 1 Gigabit Ethernet: 20,000
• 10 Gigabit Ethernet: 2,000
• 40 Gigabit Ethernet: 500
2 seconds
15 seconds
20 seconds
20 hops
125
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