General DataComm SpectraComm IP T1, Руководство по установке и эксплуатации

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Additional Features LAN-X Traffic Control Features
5-16 SpectraComm IP T1 Router Card 076R200-000
Installation and Operation Manual Issue 13
Spanning Tree Protocol
In LAN-X applications, SCIP with Spanning Tree Protocol complies with IEEE 802.1D 1998 and
has been tested with third-party bridges such as the CISCO IOS, Version 12.0 (7). Spanning Tree
Protocol determines the active topology of a bridged LAN so that there is no more than one active
data path between any two workstations in that bridged LAN. The chosen data path for each LAN
segment shall have at least Root Path Cost. Spanning Tree Protocol automatically reconfigures the
active topology of a bridged LAN when there is a breakdown in the active data path. The chosen
data path for each LAN segment shall have at least Root Path Cost.
• For help in setting Spanning Tree parameters, type:
configure span-tree ?
• To show the status of Spanning Tree parameters, type
show span-tree
Figure 5-10 Help and Status Displays for Spanning Tree
SCIP-T1% configure span-tree ?
___________Help for "configure span-tree "______________________
fwd-delay-time Configure Bridge Forward Delay Time; requires 1 parameter(s)
hello-time Configure Bridge Hello Time; requires 1 parameter(s)
max-age-time Configure Bridge Max Age Time; requires 1 parameter(s)
ports Configure Bridge Port Parameters
priority Configure Bridge Priority; requires 1 parameter(s)
enable Enable Spanning Tree
disable Disable Spanning Tree
SCIP-T1% show span-tree
__________Spanning Tree Status & Parameters (Spanning Tree is Enabled.) _____
This Bridge Root Bridge
Bridge ID (MAC) 00-C0-64-02-08 00-60-B0-A3-50-80
Bridge ID (Priority): 32768 1
Hello Time(seconds): 2 2
Max Age(seconds): 20 20
Forwarding Delay(seconds): 15 15
For interface ethernet0 (Root Port):
Designated Root/Priority: 00-60-B0-A3-50-80
Designated Bridge/Priority: 00-04-C1-48-77-00/32768
Port Number: 1 Port Priority: 128
Designated Cost: 127 Path Cost: 100
Port State: Forwarding
BPDUs (RX/TX): 7248
For interface serial0 (Designated Port):
Designated Root/Priority: 00-C0-64-02-00-80/32768
Designated Bridge/Priority: 00-C0-64-02-00-80/32768
Port Number: 2 Port Priority: 128
Designated Cost: 0 Path Cost: 350
Port State: Disabled
BPDUs (RX/TX): 0