Configuration Guide User guide

BigIron RX Series Configuration Guide 1149
53-1002484-04
802.1s Multiple Spanning Tree Protocol
41
The ethernet <slot/port> parameter displays the mstp protocol information for the specified
Ethernet interface.
TABLE 186 CLI display of MSTP information for the specified Ethernet interface
This field... Displays...
<slot/port>
The MSTP protocol information for the specified ethernet interface.
NOTE: If the Ethernet interface is not added to any MSTP enabled
VLANs, the command displays the following message instead:
"No MSTP-configured VLANs for the port
<slot/port>”.
MSTP (IEEE 802.1s) port parameters
Port Num The port number shown in a slot#/port# format.
Pri The configured priority of the port. The default is 128 or 0x80.
Port Path Cost The configured path cost on a link connected to this port.
P2P Mac Indicates if the point-to-point-mac parameter is configured to be a
point-to-point link:
• T – The link is configured as a point-to-point link.
• F – The link is not configured as a point-to-point link. This is the
default.
Edge port Indicates if the port is configured as an operational Edge port:
• T – The port is configured as an Edge port.
• F – The port is not configured as an Edge port. This is the default.
Role The current role of the port:
• Root
• Designated
• Alternate
• Backup
• Disabled
Refer to “Bridges and bridge port roles” on page 359 for definitions of
the roles.
State The port’s current RSTP state. A port can have one of the following
states:
• Forwarding
• Discarding
• Learning
• Disabled
Refer to “Bridge port states” on page 363 and “Edge port and non-edge
port states” on page 364
Designated Cost The best root path cost that this port received, including the best root
path cost that it can transmit.
Designated Bridge The ID of the bridge that sent the best RST BPDU that was received on
this port.