Default Settings For Mst - Cisco Nexus 7000 Series Configuration Manual

Default Settings for MST

Default Settings for MST

This table lists the default settings for MST parameters.
Table 15: 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
Cisco Nexus 7000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.x
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Configuring MST Using Cisco NX-OS
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 4094 are mapped to Instance
0 by default
65
32768
128
Auto
The default port cost is determined by the port speed
as follows:
• 10 Mbps: 2,000,000
• 100 Mbps: 200,000
• 1 Gigabit Ethernet: 20,000
• 10 Gigabit Ethernet: 2,000
2 seconds
15 seconds
20 seconds