Cisco ONS 15327, User Documentation

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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 9 Ethernet Operation
Spanning Tree (IEEE 802.1D)
9.6.3 Spanning-Tree Configuration
To view the spanning-tree configuration, at the node view click the Provisioning tab and Etherbridge
subtab. Table 9-6 lists spanning-tree configuration information.
9.6.4 Spanning-Tree Map
The Circuit window shows forwarding spans and blocked spans on the spanning tree map.
Procedure: View the Spanning Tree Map
On the circuit window (Figure 9-24) , double-click an Ethernet circuit.
Figure 9-24 The Spanning-tree map on the Circuit window
HelloTime Time interval, in seconds, between the transmission of configuration BPDUs by a
bridge that is the spanning-tree root or is attempting to become the spanning-tree
root.
HoldTime Minimum time period, in seconds, that elapses during the transmission of
configuration information on a given port.
ForwardDelay Time spent by a port in the listening state and the learning state.
Table 9-5 Spanning-Tree Parameters (continued)
Table 9-6 Spanning-Tree Configuration
Column Default Value Value Range
Priority 32768 0–65535
Bridge maximum age 20 seconds 6–40 seconds
Bridge Hello Time 2 seconds 1–10 seconds
Bridge Forward Delay 15 seconds 4–30 seconds