XG700 User's Guide
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All Rights Reserved, Copyright (C) PFU LIMITED 2005-2006
Mode
The mode of Spanning Tree Protocol corresponding to the switch port is displayed.
−
STP
The switch port is operating in STP (IEEE 802.1D Spanning Tree Protocol) mode.
−
RSTP
The switch port is operating in RSTP (IEEE 802.1w Rapid Spanning Tree Protocol) mode.
−
None
STP is not applicable to switch ports.
Cost
The path cost value of the port is displayed.
Pri
The priority value of the switch port is displayed.
PortID
The port ID of the switch port is displayed.
Flags
Flags indicating the state of the switch port is displayed. Each flag has the following meaning:
−
First flag (Port role)
Indicates the role of the port.
−
R
The Root port.
−
D
The Designated port.
−
A
The Alternate port.
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B
The Backup port.
−
Second flag (Config link type)
Indicates the link type of the line set in the XG700.
−
p
A point-to-point line.
−
s
A shared line.
In the XG700, Point-to point "p" is always used.
−
Third flag (Oper link type)
Indicates the link type, which is actually operating.
−
p
A point-to-point line.
−
s
A shared line.
−
Fourth flag (Proposal state)
Indicates that it is in a state in which building of Spanning Tree is proposed to the adjacent switch.
−
p
Building of Spanning Tree is proposed.
−
(None)
Building of Spanning Tree is agreed with the adjacent switch.
−
Fifth flag (Received BPDU)
The mode of Spanning Tree Protocol of the received BPDU.
−
d
STP(IEEE802.1D).
−
w
RSTP(IEEE802.1w).
Even when RSTP mode is set to the switch port of the XG700, if the switch port of the destination is
operating in STP (IEEE802.1D) mode, it will operate as STP.
Designated Switch
Displays the switch identifier of the specified switch (which sent BPDU to the port).
In the first four digits, the priority of the designated switch is displayed in a hexadecimal number. In the remaining 12
digits, the MAC address of the designated switch is displayed in a hexadecimal number.