Rules for Configuring the TEDG


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Using the BEA Tuxedo TOP END Domain Gateway

You must adhere to the following rules when configuring the TEDG.

A single copy of the TEDG can support simultaneous connections to multiple NI processes on different nodes of a single BEA TOP END system. Multiple copies of the TEDG can run within a BEA Tuxedo domain, even on a single node. This flexibility allows a given BEA Tuxedo domain to connect to more than one BEA TOP END system. It also enables the administrator to divide the connections to a BEA TOP END system among multiple TEDG processes for workload balancing and/or redundancy. The following illustration shows a valid TEDG configuration.
Valid TEDG Configuration
BEA TOP END does not permit multiple network connections between any pair of nodes within a single BEA TOP END system, as shown in the following figure.
Invalid Multi-node TEDG Configuration

As you can see in the diagram, a single physical node, NODE 1, can support two logical nodes: the TEDG on the BEA Tuxedo system and NI₁ on the BEA TOP END system. In this scenario, the TEDG on NODE 1 is capable of functioning as an NI to NI₂ on NODE 2. The TEDG cannot be used to connect to NI₂ on NODE2, however, if another NI (in this case NI₁ on the BEA TOP END system on NODE 1) is connected to that node.
Due to the way in which network connections and node names are managed in the BEA TOP END system, a BEA Tuxedo TEDG cannot communicate with a BEA TOP END system on the same node, as shown in the following figure. The TEDG and BEA TOP END NI are free to communicate with other BEA TOP END nodes as long as they do not communicate with the same node, as shown in the previous figure, Invalid Multi-node TEDG Configuration.
Invalid Single-node Configuration
If multiple network adapters are used on a BEA TOP END node, the BEA TOP END nodemap file should be used to map the node names associated with the IP addresses of those network adapters to a single BEA TOP END node ID for the machine.