Cisco ONS 15454 SDH - “Path in Use Error” When Creating a Circuit; Calculate and Design IP Subnets; Ethernet Connections

7-20
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
Chapter 7 Configuring STP and RSTP
Configuring the Forwarding-Delay Time for a Bridge Group
Configuring the Forwarding-Delay Time for a Bridge Group
Beginning in privileged EXEC mode, follow these steps to configure the forwarding-delay time for a
bridge group:
To return the switch to its default setting, use the no bridge bridge-group-number forward-time seconds
command.
Configuring the Maximum-Aging Time for a Bridge Group
Beginning in privileged EXEC mode, follow these steps to configure the maximum-aging time for a
bridge group:
To return the switch to its default setting, use the no bridge bridge-group-number max-age seconds
command.
Verifying and Monitoring STP and RSTP Status
To display the STP or RSTP status, use one or more of the privileged EXEC commands in Table 7-6:
Command Purpose
Step 1
Router# configure terminal
Enters global configuration mode.
Step 2
Router(config)# bridge
bridge-group-number
forward-time seconds
Configures the forward time of a VLAN. The forward delay is the
number of seconds a port waits before changing from its
spanning-tree learning and listening states to the forwarding state.
For seconds, the range is 4 to 200; the default is 15.
Step 3
Router(config)# end
Returns to privileged EXEC mode.
Command Purpose
Step 1
Router# configure terminal
Enters global configuration mode.
Step 2
Router(config)# bridge
bridge-group-number max-age
seconds
Configures the maximum-aging time of a bridge group. The
maximum-aging time is the number of seconds a switch waits
without receiving spanning-tree configuration messages before
attempting a reconfiguration.
For seconds, the range is 6 to 200; the default is 20.
Step 3
Router(config)# end
Returns to privileged EXEC mode.
Table 7-6 Commands for Displaying Spanning-Tree Status
Command Purpose
ML_Series# show spanning-tree
Displays detailed STP or RSTP information.
ML_Series# show spanning-tree
brief
Displays summary of STP or RSTP information.