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Default
The redundancy hello packet sending interval for the primary KS is 20 seconds. A secondary KS
initiates primary KS re-election when it failed to receive redundancy hello packets from the primary
KS for 3 times consecutively.
Views
GDOI KS group view
Default command level
2: System level
Parameters
interval
interval
: Specifies the redundancy hello packet sending interval in the range of 20 to 60
seconds.
number
number
: Specifies the maximum number of consecutive failures allowed in receiving
redundancy hello packets, in the range of 3 to 10.
Usage guidelines
The primary KS periodically sends hello packets to all secondary KSs to inform the secondary KSs of
the keepalive status. The secondary KSs are not required to respond to the hello packets.
After primary KS selection, the primary KS informs the secondary KS of the keepalive time. If a
secondary KS does not receive the redundancy hello packets from the primary KS after the
configured number of attempts, it considers itself disconnected from the primary KS, and triggers
primary KS re-election.
When the primary KS detects a disconnection from a secondary KS, it informs the secondary KS of
the disconnection through hello packets. The secondary KS tries to re-establish a connection with
the primary KS if it receives the hello packet. If the connection cannot be established, primary KS
re-election is triggered.
Do not set a long hello packet sending interval. Otherwise, secondary KSs cannot timely detect a
primary KS failure or a link failure.
You can increase the value of the
number
argument for KSs connected to not-so-good links to avoid
unnecessary primary KS re-elections caused by link transmission failures.
Examples
# Set the redundancy hello packet sending interval to 30 seconds, and the maximum number of
consecutive failures in receiving redundancy hello packets to 3.
<Sysname> system-view
[Sysname] gdoi ks group abc
[Sysname-gdoi-ks-group-abc] redundancy hello interval 30 number 3
Related commands
display gdoi ks
redundancy retransmit
Use
redundancy retransmit
to configure the redundancy protocol packet retransmission interval
and the maximum number of retransmissions.
Use
undo redundancy retransmit
to restore the default.
Syntax
redundancy retransmit
{
interval
interval
|
number
number
} *
undo redundancy retransmit
[
interval
|
number
]
