Dialogic TX4000 PCI SS7 Single-node redundant signaling server, IP network configuration

TX 4000 PCI SS7 Network Interface Board Installation Manual Establishing network connections

Single-node redundant signaling server

The following illustration shows how to set up two TX 4000 boards based on the single-node signaling server in a TDM configuration. The boards are located in the same chassis to ensure board-level redundancy.

SS7 links

TX 4000	TX 4000
(primary)	(backup)
	Chassis 1

Ethernet 1

Ethernet 1

Private Ethernet connection

IP network configuration

To connect a TX 4000 board to its redundant mate in an IP network configuration, use a Category 5 shielded twisted pair (STP) crossover cable. Using the crossover cable, connect Ethernet 1 on the primary board to Ethernet 1 on the backup board. Using standard Ethernet cables, connect the Ethernet 2 connectors on both boards to the IP network connectors.

Note: Dialogic recommends using a private Ethernet link to connect the redundant boards to avoid loss or delay of vital checkpoint messages. However, if each board in the redundant pair requires multi-homing, you can use Ethernet 1 for both the redundant pathway and for SIGTRAN network access. In this configuration, the Ethernet 1 on each board is connected to what is shown as an IP network cloud in the illustrations that follow (just as the Ethernet 2 connectors are). Be aware that this greatly increases the chance of lost or delayed checkpoint messages which can result in the backup having outdated information.

You must specify the IP address of the TX board’s redundant mate using the mate command in the txconfig utility. You must also define the IP interface address using the ifcreate command (for interface 1) in the txconfig utility. For more information, refer to the Dialogic® NaturalAccess™ Signaling Software Configuration Manual.

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