Management Guide
2-37
Spanning Tree States
This menu displays the current Spanning Tree state for each port on the switch.
You can also change the administrative status of any port by first highlighting a
port, pressing Enter, and selecting Up or Down to enable or disable the port for
troubleshooting or security reasons.
+------------------------------------------------------------------------------+
| ES3616 CheetahSwitch Workgroup-3616
switch_a
|
| ~ced Management/Spanning Tree Protocol/Spanning Tree Port States
admin
|
+------------------------------------------------------------------------------+
+---------------------------------------+
|
Spanning Tree Port States
|
+---------------------------------------+
| |Port
1: Forwarding
|
| |Port
2: Disabled (Link Down)
|
| |Port
3: Forwarding
|
| |Port
4: Forwarding
|
| |Port
5: Forwarding
|
| |Port
6: Forwarding
|
| |Port
7: Forwarding
|
| |Port
8: Forwarding
|
| |Port
9: Forwarding
|
| |Port 10: Forwarding
|
| |Port 11: Forwarding
|
| |Port 12: Forwarding
|
|v|Port 13: Forwarding
|
+---------------------------------------+
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<UpArrow><DownArrow>Move
<Enter>Change Admin Status
<ESC>Previous
Parameter
Description
Status
Displays the current state of this port within the spanning tree:
Disabled
Port has been disabled by the user or has failed diagnostics.
Blocking
Port receives STP 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
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 STP compliant bridging device
is always forwarding.
• If two ports of a switch are connected to the same segment and there is
no other STP 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.
Summary of Contents for ES3616
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Page 10: ...1 4 CheetahSwitch Workgroup 3616 ...
Page 56: ...3 4 CheetahSwitch Workgroup 3616 ...
Page 70: ...A 2 CheetahSwitch Workgroup 3616 ...
Page 73: ...ES3616 E0998 R01 150100 102 ...