bridge hello-time
Use this command to set the hello-time, the time in seconds after which (if this bridge is the root bridge) all the bridges in a bridged LAN exchange Bridge Protocol Data Units (BPDUs). A very low value of this parameter leads to excessive traffic on the network, while a higher value delays the detection of topology change.This value is used by all instances.
Configure the bridge instance name before using this command. The allowable range of values is 1-10 seconds. However, make sure that the value of hello time is always greater than the value of hold time (2 seconds by default).
Use the no parameter to restore the default value of the hello time.
Note: A Bridge enforces the following relationships for Hello-time, Max-age and Forward-delay.
• 2 × (Bridge_Forward_Delay – 1.0 seconds) >= Bridge_Max_Age
• Bridge_Max_Age >= 2 × (Bridge_Hello_Time + 1.0 seconds)
Note: Hello-time is allowed only on RSTP, IEEE and Provider-RSTP types of bridges. For MSTP and Provider-MSTP hello timer is restricted.
Command Syntax
bridge <1-32> hello-time <1-10>
no bridge <1-32> hello-time
Parameters
<1-32>
Specify the bridge group ID.
<1-10>
Specify the hello BPDU interval in seconds.
Default
By default, value is 2 seconds
Command Mode
Configure mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#configure terminal
(config)#bridge 3 hello-time 3
(config)#no bridge 3 hello-time
Last modified date: 10/12/2023