ProLiant BL p-Class GbE2 Interconnect Switch Browser-based Interface Reference Guide

Configuring the switch 143
Ports Common Internal Spanning Tree Configuration
To display the following form, select Layer 2 > MSTP/RSTP > CIST-Ports.
Common Internal Spanning Tree Port Configuration
To display the following form, go to the Ports Common Internal Spanning Tree Configuration form. Select a CIST
Port number.
This form summarizes the port CIST parameters. Common Internal Spanning Tree port parameters are used to
modify MRST operation on an individual port basis. For each port, MSTP is turned on by default.
The following table describes the Common Internal Spanning Tree Port Configuration controls:
Table 116 Common Internal Spanning Tree Port Configuration controls
Control Description
Port Priority (0-255) Configures the CIST port priority. The port priority helps determine which bridge port
becomes the designated port. In a network topology that has multiple bridge ports
connected to a single segment, the port with the lowest port priority becomes the
designated port for the segment.
The range is 0 to 255, in steps of 16 (0, 16, 32...) and the default is 128.
Path Cost (1-200000000) Configures the CIST port path cost. The port path cost is used to help determine the
designated port for a segment. Generally speaking, the faster the port, the lower the
path cost.
The default is 20000 for Gigabit ports.