Lantronix SISPM1040-xxxx-L3 Web User Guide
33856 Rev. A https://www.lantronix.com/ 147
Bridge Priority: Controls the bridge priority. Lower numeric values have better priority. The bridge priority plus
the MSTI instance number, concatenated with the 6-byte MAC address of the switch forms a Bridge Identifier.
For MSTP operation, this is the priority of the CIST. Otherwise, this is the priority of the STP/RSTP bridge.
Hello Time: The interval between sending STP BPDU's. Valid values are 1 - 10 seconds; the default is 2
seconds. Note: Changing this parameter from the default value is not recommended and may have adverse
effects on your network.
Forward Delay: The delay used by STP Bridges to transit Root and Designated Ports to Forwarding (used in STP
compatible mode). Valid values are 4 - 30 seconds.
Max Age: The maximum age of the information transmitted by the Bridge when it is the Root Bridge. Valid values
are 6 - 40 seconds, and MaxAge must be <= (FwdDelay-1)*2.
Maximum Hop Count: This defines the initial value of remaining Hops for MSTI information generated at the
boundary of an MSTI region. It defines how many bridges a root bridge can distribute its BPDU information to.
Valid values are 6 - 40 hops.
Transmit Hold Count: The number of BPDU's a bridge port can send per second. When exceeded, transmission
of the next BPDU will be delayed. Valid values are 1 - 10 BPDU's per second.
Advanced Settings
Edge Port BPDU Filtering: Control whether a port explicitly configured as Edge will transmit and receive BPDUs.
Edge Port BPDU Guard: Control whether a port explicitly configured as Edge will disable itself upon reception of
a BPDU. The port will enter the error-disabled state and will be removed from the active topology.
Port Error Recovery: Control whether a port in the error-disabled state automatically will be enabled after a
certain time. If recovery is not enabled, ports have to be disabled and re-enabled for normal STP operation.
The condition is also cleared by a system reboot.
Port Error Recovery Timeout: The time to pass before a port in the error-disabled state can be enabled.
Valid values are 30 - 86400 seconds (24 hours).
Root Guard
Port: This is the logical port number for this row.
Root Guard: Root guard allows the device to participate in STP as long as the device does not try to become the
root. If root guard blocks the port, subsequent recovery is automatic. Recovery occurs as soon as the offending
device ceases to send superior BPDUs.
Buttons
Apply: Click to save changes.
Reset: Click to undo any changes made locally and revert to previously saved values.
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