Media State Checkpointing

By default, the Oracle® Enterprise Session Border Controller performs media checkpointing across the HA node for all signaling protocols. You can keep the default port set for redundancy media flows.

H.323 media high availability is supported through a TCP socket keep-alive, which determines whether or not the other end of a TCP/IP network connection is still in fact connected. This type of checkpointing prevents the listening side of a connection from waiting indefinitely when a TCP connection is lost. When there is a switchover in the HA node, the system that has just become active takes over sending TCP keep-alives. Media continues to flow until the session ends or the flow guard timers expire.

This parameter will appear in the ACLI as follows:

	red-flow-port                  1985

Media State Checkpointing Configuration

To configure media state checkpointing across an HA node in the ACLI:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal

2. Type media-manager and press Enter to access the system-level configuration elements.

   ORACLE(configure)# media-manager

3. Type media-manager-config and press Enter.

   ORACLE(media-manager)# media-manager-config

4. red-flow-port—Enter the port number for checkpointing media flows associated with the HA interface. This is the port where media flow checkpoint message are sent and received.

   Setting this field to 0 disables media state checkpointing. The default value is 1985. The valid range is:

   • Minimum—0, 1025

   • Maximum—65535