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Information Menu 40
Rapid Spanning Tree and Multiple Spanning Tree information
Command: /info/l2/stp
Spanning Tree Group 1: On (RSTP)
VLANs: 1
Current Root: Path-Cost Port Hello MaxAge FwdDel Aging
8000 00:00:01:00:19:00 0 0 9 20 15 300
Parameters: Priority Hello MaxAge FwdDel Aging
32768 9 20 15 300
Port Prio Cost State Role Designated Bridge Des Port Type
---- ---- ---- ------ ---- --------------------- -------- ----
1 0 0 DSB
2 0 0 DSB
3 0 0 DSB
4 0 0 DSB
5 0 0 DSB
6 0 0 DSB
7 0 0 DSB
8 0 0 DSB
9 0 0 DSB
10 0 0 DISC
11 0 0 FWD DESG 8000-00:00:01:00:19:00 8017 P2P2,Edge
12 0 0 FWD DESG 8000-00:00:01:00:19:00 8018 P2P
The switch software can be set to use the IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) or the IEEE 802.1s
Multiple Spanning Tree Protocol (MSTP). If RSTP/MSTP is turned on, you can view the following RSTP bridge
information for the Spanning Tree Group:
• Current root MAC address
• Path-Cost
• Port
• Hello interval
• Maximum age value
• Forwarding delay
• Aging time
You can also refer to the following port-specific RSTP information:
• Port number and priority
• Cost
• State
• Role
• Designated bridge and port
• Link type
The following table describes the STP parameters in RSTP or MSTP mode.
Table 26 Rapid Spanning Tree parameter descriptions
Parameter Description
Current Root Shows information about the root bridge for the Spanning Tree. Information includes the
priority (hex) and MAC address of the root.
Path-Cost Path-cost is the total path cost to the root bridge. It is the summation of the path cost
between bridges (up to the root bridge).
Port The current root port refers to the port on the GbE2 Interconnect Switch that receives data
from the current root. Zero (0) indicates the root bridge of the STP.
Priority (bridge) The bridge priority parameter controls which bridge on the network will become the STP
root bridge.
Hello
The hello time parameter specifies, in seconds, how often the root bridge transmits a
configurationbridge protocol data unit (BPDU). Any bridge that is not the root
bridge uses the root bridge hello value.