Command Reference Guide

Error! Use the Home tab to apply 見出し 1 to the text that you want to appear here. 112
CIST port configuration
Command: /cfg/l2/mrst/cist/port <port number>
[CIST Port 1 Menu]
prior - Set port Priority (0-240)
cost - Set port Path Cost (1-200000000, 0 for auto)
hello - Set CIST port Hello Time (1-10 secs)
link - Set MSTP link type (auto, p2p, or shared; default: auto)
edge - Enables or disables edge port
on - Turn port's Spanning Tree ON
off - Turn port's Spanning Tree OFF
cur - Display current port Spanning Tree parameters
CIST port parameters are used to modify MST operation on an individual port basis. CIST parameters do
not affect operation of STP/PVST+.
Port parameters include:
Port priority
Port path cost
Port Hello time
Link type
Edge
On and off
Current port configuration
The following table describes the commands used to configure CIST Port Configuration Menu options.
Table 110 CIST Port Configuration Menu options
Command
Description
prior <0-240>
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 240, in steps of 16 (0, 16, 32...), and the default is 128.
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 2000 for10 Gb ports.
hello <1-10>
Configures the CIST port Hello time. The Hello time specifies how often the
root bridge transmits a configuration bridge protocol data unit (BPDU). Any
bridge that is not the root bridge uses the root bridge Hello value. The
range is 1 to 10 seconds, and the default is 2 seconds.
link auto|p2p|shared
Defines the type of link connected to the port, as follows:
auto: Configures the port to detect the link type, and automatically
match its settings.
p2p: Configures the port for Point-To-Point protocol.
shared: Configures the port to connect to a shared medium (usually a
hub).
The default link type is auto.
edge disable|enable
Enables or disables this port as an edge port. An edge port is not
connected to a bridge, and can begin forwarding traffic as soon as the
link is up. Configure server ports as edge ports (enabled). By default, Ports
1-16 are configured as edge ports.
On
Enables CIST on the port. This is the default for Ports 18 - 21.
Off
Disables CIST on the port.
Cur
Displays the current CIST port configuration.