Cli Configuration - Tripp Lite NGI-S04C2 Owner's Manual

Root Guard
The Root Guard feature forces an interface to become a designated port to prevent
surrounding switches from becoming a root switch. In other words, Root Guard
provides a way to enforce the root bridge placement in the network. The Root Guard
feature prevents a Designated Port from becoming a Root Port. If a port on which the
Root Guard feature receives a superior BPDU, it moves the port into a
root-inconsistent state (effectively equal to a listening state), thus maintaining the
current Root Bridge status. The port can be moved to forwarding state if no superior
BPDU received by this port for three hello time.
Default Settings
STP/RSTP

STP/RSTP mode

Forward Time

Hello Time

Maximum Age

System Priority

Transmission Limit

Per port STP state

Per port Priority

Per port Edge port

Per port BPDU filter

Per port BPDU guard

Per port BPDU Root guard: disabled.

Per port Path Cost

Example: Bandwidth -> STP Port Cost Value
10 Mbps -> 100
100 Mbps-> 19
1 Gbps
10 Gbps -> 2
4.3.2.1.
Node Command
enable show spanning-tree
active
enable show spanning-tree
blockedports
enable show spanning-tree
port detail PORT_ID
enable show spanning-tree
statistics PORT_ID
enable show spanning-tree
summary
enable clear spanning-tree
: disabled.
: RSTP.
: 15 seconds.
: 2 seconds.
: 20 seconds.
: 32768.
: 3 seconds.
: enabled.
: 128.
: disabled.
: disabled.
: disabled.
: depend on port link speed.
-> 4

CLI Configuration

This command displays the spanning tree
information for only active port(s)
This command displays the spanning tree
information for only blocked port(s)
This command displays the spanning tree
information for the interface port.
This command displays the spanning tree
information for the interface port.
This command displays the summary of port states
and configurations
This command clears spanning-tree statistics for
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Description