bringup delay
To configure a delay when an interface is first created before it is added to the MSTP topology, use the bringup
delay command in the MSTP configuration mode.
bringup delay for interval {seconds| minutes| hours}
no bringup delay for interval {seconds| minutes| hours}
Syntax Description
Length of time to delay adding the interface to the MSTP topology.
interval
Specifies the delay in seconds.seconds
Specifies the delay in minutes.minutes
Specifies the delay in hours.hours
Command Default
If no bringup delay is configured, interfaces are added to the MSTP topology as soon as they are created.
Command Modes
MSTP configuration
Command History
ModificationRelease
This command was introduced.Release 3.9.1
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
This command is used to change the behaviour of MSTP when interfaces are first functional (for example,
when a line card boots for the first time). By default, interfaces are added to the MSTP topology, and may be
placed in the forwarding state, as soon as the system declares that the interfaces are functional. However, at
this point the data plane may not be fully prepared to forward traffic on the interface. If a bringup delay is
configured, MSTP keeps the interface in blocked state for the specified delay, and adds it to the MSTP topology
only after the specified interval has occurred.
For information on configuring bringup delay, refer to the Implementing Multiple Spanning Tree Protocol
module of the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration
Guide.
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
6.1.x
469
Multiple Spanning Tree Protocol Commands
bringup delay
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