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IntraCore IC3624PWR Layer 2 PoE Switch with Dual Gigabit
6.3.4.1 CIST Configuration
Use this submenu to configure the Common Internal Spanning Tree (CIST).
Map: Main Menu->Advanced Switch Configuration->MSTP Configuration->CIST Configuration
Status
Hello Time: Amount of time between configuration messages sent by the Spanning Tree algorithm
Maximum Age Amount of time before a configuration message is discarded by the system
Forward Delay Amount of time system spent transitioning from the ‘learning’ to the ‘listening’ to the ‘forwarding’
states
Bridge Priority Priority setting among other switches in the Spanning Tree
Cost & Priority: Refer to the following table for complete information
Parameters Range Description
Prty (Priority) 0-240 STP uses this to determine which path (port) to use for forwarding. The port
with the lowest number has the highest priority.
Cost 0-200000000
The switch uses this to determine which port is the forwarding port when the
priority is equal. The path with the lowest cost to the root bridge is the active
path. The estimated path cost is the industry standard for the port speed. The
default path cost is the maximum speed for the port.
Commands
Set Cist Bridge Priority: Sets the Cist bridge priority.
Set Cist Bridge Hello Time: Sets the interval between two hello packets.
Set Cist Bridge Maximum Age: Sets the maximum age time.
Set Cist bridge Forward Delay Sets the forward delay.
Set MSTP Max Hop Count
Delay:
Sets the maximum hop count delay.
Rapid Spanning Tree
When a port running the standard STP is connected, it goes through the STP negotiation (listening -> learning ->
forwarding or blocking) before it is available. If a client is trying to access a server through the switch running the STP
negotiation, it cannot connect to it immediately. RSPT solves the lag time issue by setting the port directly to
forwarding mode, which allows any server access request to be forwarded. RSPT is used on end node ports. For
example, ports connected to PCs or servers, and not on uplink ports to other switches.