Siemens RUGGEDCOM ROX II, User Manual

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RUGGEDCOM ROX II
CLI User Guide
Chapter 14
Network Redundancy
Viewing RSTP Per-Port Statistics 655
Parameter Description
This parameter is mandatory.
total-top-changes Synopsis: A 32-bit unsigned integer
A count of topology changes in the network, as detected on this bridge through link failures
or as signaled from other bridges. Excessively high or rapidly increasing counts signal
network problems.
This parameter is mandatory.
Section 14.3.9
Viewing RSTP Per-Port Statistics
To view Rapid Spanning Tree Protocol (RSTP) statistics for each port, type:
show switch spanning-tree port-rstp-stats
A table or list similar to the following example appears:
ruggedcom# show switch spanning-tree port-rstp-stats | tab
DESG
STP BRIDGE OPER RX TX RX TX
RX TX
SLOT PORT STP STATE ROLE COST PRIORITY DESG BRIDGE MAC EDGE RSTS RSTS CONFIGS CONFIGS
TCNS TCNS
---------------------------------------------------------------------------------------------
lm1 1 forwarding root 19 32768 00:0a:dc:78:fc:40 false 432 0 0 0 0
0
lm1 2 linkDown ---- 0 0 00:00:00:00:00:00 false 0 0 0 0 0
0
This table or list provides the following information:
Parameter Description
slot Synopsis: { { sm, lm1, lm2, lm3, lm4, lm5, lm6, swport, eth, serport, celport, wlanport }
{ trnk } }
The slot of the module that contains this port.
port Synopsis: A 32-bit signed integer between 1 and 16
The port number as seen on the front plate silkscreen of the module.
stp-state Synopsis: { disabled, blocking, listening, learning, forwarding, linkDown, discarding }
Describes the status of this interface in the spanning tree:
• Disabled: Spanning Tree Protocol (STP) is disabled on this port.
• Link Down: STP is enabled on this port but the link is down.
• Discarding: The link is not used in the STP topology but is standing by.
• Learning: The port is learning MAC addresses in order to prevent flooding when it begins
forwarding traffic.
• Forwarding : The port is forwarding traffic.
This parameter is mandatory.
stp-role Synopsis: { ----, root, designated, alternate, backup, master }
The role of this port in the spanning tree:
• Designated: The port is designated for (i.e. carries traffic towards the root for) the Local
Area Network (LAN) it is connected to.
• Root: The single port on the bridge, which provides connectivity towards the root bridge.