Specifications

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249
Item Meaning Displayed information
Regional Root Regional root bridge
information stored in the
BPDU
If Protocol Version is MSTP, information about
the CIST and MSTI regional root bridge is
displayed.
If Mode Version is STP or Rapid STP, this
information is not displayed.
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC MAC address MAC address of the regional root bridge that sent
BPDUs
Internal Root Cost Internal root path cost If Protocol Version is MSTP, the internal root
path cost is displayed.
If Mode Version is STP or Rapid STP, this
information is not displayed.
Designated Bridge Information about the
neighboring bridge that
sent the BPDU
--
Priority Bridge priority 0 to 65535
The lower the value, the higher the priority.
MAC MAC address MAC address of the bridge that sent BPDUs
Port ID Information about the port
that sent the BPDU
--
Priority Port priority 0 to 255
The lower the value, the higher the priority.
Number Port number 0 to 892
Message Age Timer Valid time of the received
BPDUs
Indicates how long received BPDUs are valid.
A hyphen (-) is displayed if this period has expired.
<current-time>(<time-BPDU-received>)/<maximu
m-time>
<current-time>:
The time at which the BPDU is received plus
the time that has elapsed
<time-BPDU-received>:
The time that has already elapsed when the
BPDU is received (Message Age of the
received BPDU)
<maximum-time>:
Valid time (Max Age of the received BPDU)
Remaining Hops Number of remaining hops 0 to 40
Displays the number of remaining hops for BPDUs
that the MST bridge sends.
A hyphen (-) is displayed if Mode Version is STP
or Rapid STP.