Technical Documentation



hello-time seconds;

Hierarchy Level

[edit protocols mstp],
[edit protocols rstp],
[edit protocols stp],
[edit protocols vstp vlan vlan-id]

Release Information

Statement introduced in JUNOS Release 9.0 for EX Series switches.

Statement updated in JUNOS Release 9.4 for EX Series switches to add VSTP support.


For Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), VLAN Spanning Tree Protocol (VSTP), or Multiple Spanning Tree Protocol (MSTP), specify the time interval at which the root bridge transmits configuration BPDUs.


2 seconds


seconds—Number of seconds between transmissions of configuration BPDUs.

Range: 1 through 10 seconds
Default: 2 seconds

Required Privilege Level

routing—To view this statement in the configuration.
routing-control—To add this statement to the configuration.

Published: 2009-07-28