Specifications

Watson Ethernet
Operating Manual
Watson-Ethernet-Manual.doc
Version 3.3-01
7-20
Revision: 2010-01-20
7.2.12 Spanning Tree Configuration
The Rapid Spanning Tree Protocol (RSTP) is available on the Watson Ethernet
plug-in only. The Watson Ethernet tabletop modem is transparent for spanning
tree bridge protocol data units (BPDUs) but will not interpret them.
STP
Displays the current STP configuration. Data for both the bridge and for the root
bridge are shown. The bridge is identified by its ADMIN-NAME.
LTU_01_CM> STP
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Configuration of Rapid Spanning Tree Protocol
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Spanning Tree protocol: RSTP
Topology Change Count: 0
Time Since Last Topology Change: 0 days, 0:01:11
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bridge: Root BRIDGE-1
Bridge Priority: 32768 32768
Bridge ID: 8000-00:80:6B:6B:04:86 8000-00:80:6B:6B:04:86
Hello Time (sec): 2 2
MaxAge (sec): 20 20
Forwarding Delay (sec): 15 15
Transmit Hold Count: 6
Cost to Bridge: 0
Root Port:
Spanning Tree protocol
Currently active STP version (STP IEEE 802.1d or
RSTP IEEE 802.1w)
Topology Change Count
Number of topology changes
Time Since Last Topolo-
gy Change
Time since last topology change (days, h:m:s)
Bridge Priority
Bridge priority
Bridge ID
Bridge identifier (Bridge priority and MAC Address of
interface MGMT3)
Hello Time
Hello timer. Determines how often the bridge broad-
casts its hello message to other bridge.
MaxAge
Maximum age timer. Determines the maximum age of
a BPDU
Forwarding Delay
Forwarding delay timer. Determines (in STP mode)
the time before a port will change from learning to
listening and from listening to forwarding states
Transmit Hold Count
Transmit hold counter. The maximum number of
BPDUs transmitted per second.
Cost to Bridge
Path cost to the root bridge
Root Port
Selected root port. This is the port providing the low-
est path cost to the root bridge. Left empty on the root
bridge.