Alcatel-Lucent 7750 SR OS Service Manual page 383

Hello Time
The
hello-time
Virtual Private LAN Service (VPLS) STP instance.
The seconds parameter defines the default timer value that controls the sending interval between
BPDU configuration messages by this bridge, on ports where this bridge assumes the designated
role.
The active hello time for the spanning tree is determined by the root bridge (except when the STP
is running in RSTP mode, then the hello time is always taken from the locally configured
parameter).
The configured hello-time value can also be used to calculate the bridge forward delay, see
Forward Delay on page 382
CLI Syntax: config>service>vpls service-id# stp
Hold Count
The
hold-count
period of one second.
CLI Syntax: config>service>vpls service-id# stp
7750 SR OS Services Guide
command configures the Spanning Tree Protocol (STP) hello time for the
hello-time hello-time
Range:
1 to 10 seconds
Default:
2 seconds
Restore Default: no hello-time
command configures the peak number of BPDUs that can be transmitted in a
hold-count count-value
Range:
1 to 10
Default:
6
Restore Default: no hold-count
Virtual Private LAN Services
Page 383