Siemens RUGGEDCOM ROX II User Manual page 578

Chapter 5
Setup and Configuration
A table or list similar to the following example appears:
ruggedcom# show switch spanning-tree port-rstp-stats | tab
RX TX
SLOT PORT STP STATE
TCNS TCNS
---------------------------------------------------------------------------------------------
lm1 1 forwarding
0
lm1 2 linkDown
0
This table or list provides the following information:
Parameter
slot
port
stp-state
stp-role
cost
desg-bridge-priority
desg-bridge-mac
oper-edge
540
DESG
STP BRIDGE
ROLE COST PRIORITY
root 19 32768
---- 0 0
Description
Synopsis: { sm, lm1, lm2, lm3, lm4, lm5, lm6, swport, eth, serport, celport, trnk }
The slot of the module that contains this port.
Synopsis: An integer between 1 and 16
The port number as seen on the front plate silkscreen of the module.
Synopsis: { disabled, blocking, listening, learning, forwarding, linkDown, discarding }
Describes the status of this interface in the spanning tree: <itemizedlist><listitem>Disabled:
Spanning Tree Protocol (STP) is disabled on this port.</listitem> <listitem>Link Down:
STP is enabled on this port but the link is down.</listitem> <listitem>Discarding: The link
is not used in the STP topology but is standing by.</listitem> <listitem>Learning: The port
is learning MAC addresses in order to prevent flooding when it begins forwarding traffic.</
listitem> <listitem>Forwarding : The port is forwarding traffic.</listitem></itemizedlist>
Synopsis: { ----, root, designated, alternate, backup, master }
The role of this port in the spanning tree: <itemizedlist><listitem>Designated: The port
is designated for (i.e. carries traffic towards the root for) the Local Area Network (LAN) it
is connected to.</listitem> <listitem>Root: The single port on the bridge, which provides
connectivity towards the root bridge.</listitem> <listitem>Backup: The port is attached to
a LAN that is serviced by another port on the bridge. It is not used but is standing by.</
listitem> <listitem>Alternate: The port is attached to a bridge that provides connectivity to
the root bridge. It is not used but is standing by.</listitem> <listitem>Master: Only exists in
Multiple Spanning Tree Protocol (MSTP). The port is a Multiple Spanning Tree (MST) region
boundary port and the single port on the bridge, which provides connectivity for the Multiple
Spanning Tree Instance (MSTI) towards the Common Spanning Tree (CST) root bridge (i.e.
this port is the root port for the Common Spanning Tree Instance).</listitem></itemizedlist>
The cost offered by this port. If the Bridge RSTP Parameters Cost Style is set to STP,
1Gbps ports will contribute a cost of four, 100 Mbps ports will contribute 19 and 10 Mbps
ports contribute 100. If the Cost Style is set to RSTP, 1Gbps will contribute 20,000, 100
Mbps ports will contribute a cost of 200,000 and 10 Mbps ports contribute a cost of
2,000,000. Note that even if the Cost style is set to RSTP, a port that migrates to STP will
have its cost limited to a maximum of 65535.
Synopsis: An integer between 0 and 65535
Provided on the root ports of the designated bridges, the bridge identifier of the bridge this
port is connected to.
Synopsis: A string
Provided on the root ports of the designated bridges, the bridge identifier of the bridge this
port is connected to.
Synopsis: true or false
Whether or not the port is operating as an edge port.
OPER
DESG BRIDGE MAC EDGE
00:0a:dc:78:fc:40 false
00:00:00:00:00:00 false
RUGGEDCOM ROX II
CLI User Guide
RX TX RX TX
RSTS RSTS CONFIGS CONFIGS
432 0 0 0
0 0 0 0
Viewing RSTP Per-Port Statistics
0
0