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Alcatel-Lucent omnistack 6148 User Manual

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Using the System Configuration Program
2-32
Displaying the Current STA for Ports
The parameters shown in the following figure and table are for port STA Information. 
Alcatel OmniStack 6148
< Spanning Tree Port State >
Unit 1 Port
1 - 12
Port
Type
Status
Designated
Designated
Designated
Cost
Bridge
Port
----------------------------------------------------------------------
1
10/100TX
NO LINK
0
32768.999999234457
128.1
2
10/100TX
NO LINK
0
32768.999999234457
128.2
3
10/100TX
NO LINK
0
32768.999999234457
128.3
4
10/100TX
NO LINK
0
32768.999999234457
128.4
5
10/100TX
NO LINK
0
32768.999999234457
128.5
6
10/100TX
NO LINK
0
32768.999999234457
128.6
7
10/100TX
NO LINK
0
32768.999999234457
128.7
8
10/100TX
NO LINK
0
32768.999999234457
128.8
9
10/100TX
NO LINK
0
32768.999999234457
128.9
10
10/100TX
NO LINK
0
32768.999999234457
128.10
11
10/100TX
NO LINK
0
32768.999999234457
128.11
12
10/100TX
NO LINK
0
32768.999999234457
128.12
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Parameter
Description
Type
Shows port type as:
10/100TX: 10BASE-T 
/ 
100BASE-TX
100FX: 100BASE-FX
1000SX: 1000BASE-SX
1000LX:
1000BASE-LX
1000T:
1000BASE-T
GBIC:
1000BASE-X Transceiver
Status
Displays current state of this port within the Spanning Tree:
No Link
No link has been established on this port.
Disabled
Port has been disabled by the user or has failed diagnostics.
Blocking
Port receives STA configuration messages, but does not forward 
packets.
Listening
Port will leave blocking state due to topology change, starts 
transmitting configuration messages, but does not yet forward 
packets.
Learning
Port has transmitted configuration messages for an interval set by the 
Forward Delay parameter without receiving contradictory information. 
Port address table is cleared, and the port begins learning addresses.
Forwarding
The port forwards packets, and continues learning addresses.
The rules defining port status are:
•
A port on a network segment with no other STA-compliant bridging device is 
always forwarding.
•
If two ports of a switch are connected to the same segment and there is no other 
STA device attached to this segment, the port with the smaller ID forwards packets 
and the other is blocked.
•
All ports are blocked when the switch is booted, then some of them change state 
to listening, to learning, and then to forwarding.