Specifications

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Cisco ONS 15454 Installation and Operations Guide, R3.2
March 2002
Chapter 9 Ethernet Operation
E Series Spanning Tree (IEEE 802.1D)
9.7.3 E Series Spanning Tree Configuration
To view the spanning tree configuration, at the node view click the Provisioning tab and Etherbridge
subtab.
9.7.4 E Series Spanning Tree Map
The Circuit screen shows forwarding spans and blocked spans on the spanning tree map.
Procedure: View the E Series Spanning Tree Map
Step 1 On the circuit screen (Figure 9-33), double-click an Ethernet circuit.
Figure 9-33 The spanning tree map on the circuit screen
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 9-9 Spanning Tree Parameters (continued)
Table 9-10 Spanning Tree Configuration
Column Default Value Value Range
Priority 32768 0 - 65535
Bridge max age 20 seconds 6 - 40 seconds
Bridge Hello Time 2 seconds 1 - 10 seconds
Bridge Forward Delay 15 seconds 4 - 30 seconds