Polycom 6400-S User Manual

User Guide V

2

IU 6400-S Converged Network Appliance

5 - 10

To configure Sofswitch Redundancy, enter the following:

Press Submit.

The Virtual Router Redundancy Protocol (VRRP) is designed to eliminate the 

6400-S as a single point of failure in a network configuration. Two 6400-S 

devices can be configured to perform as a redundant pair. One 6400-S is the 

Master, the other is the Backup. If the Master fails because of a network or 

hardware failure, the Backup takes over for the Master. 

In the navigation bar, select System.

Time (s) to declare heartbeat lost

The number of seconds between the 
heartbeats was sent until it should be 
declared lost if no response has been 
received. 

Number of lost messages to declare 
alarm

the number of consecutively lost heartbeat 
messages required for the 6400-S to 
declare a loss of connectivity to the 
remote softswitch. 

Number of received messages to 
clear alarm

the number of consecutively received 
heartbeat messages required for the 
6400-S to declare successful connectivity 
to the remote softswitch. 

Enable SIP server redundancy 

Enable the monitoring of multiple SIP 
servers, as returned by the DNS server, 
and use a lower priority SIP server if 
connectivity to the main SIP server is lost. 

Trigger on resends

Trigger the SIP server fail-over when an 
INVITE has been resent a number of 
times. 

Number of resends to declare alarm

The number of resends necessary before 
the connectivity to a SIP server is 
declared lost.