Polycom 6400-S manual Configuring Vrrp, To configure Sofswitch Redundancy, enter the following

User Guide V2IU 6400-S Converged Network Appliance

Field	Description
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	the number of consecutively lost heartbeat
alarm	messages required for the 6400-S to
	declare a loss of connectivity to the
	remote softswitch.
Number of received messages to	the number of consecutively received
clear alarm	heartbeat messages required for the
	6400-S to declare successful connectivity
	to the remote softswitch.

4.To configure Sofswitch Redundancy, enter the following:

Field	Description
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.

5.Press Submit.

Configuring VRRP

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.

To configure VRRP:

1.In the navigation bar, select System.

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