WebSphere Application Server Network Deployment, Version 6.0.x     Operating Systems: AIX, HP-UX, Linux, Solaris, Windows

Advanced core group bridge configurations

This topic describes advanced core group bridge configurations.

Advanced configuration scenarios

Communication between core groups that are in the same cell

All core groups that are in the same cell must be configured to communicate with each other. To configure core group communication within a cell, create one access point group with one core group access point for each core group. Select one or more servers to be core group bridge servers, and define a bridge interface for each server. The following image shows an example of three core groups that are in the same cell and are connected by one access point group. The sample configuration shows how communication between core groups in the same cell is configured in the administrative console.
Figure 1. Communication between core groups that are in the same cell
See Configuring communication between core groups that are in the same cell for more information.

Communication within the cell and outside of the cell

Following is an example of a configuration between three core groups that are in three different cells. Each cell has one access point group for communication between core groups in the cell. Each cell also has a defined access point group, access_point_group_xyz, which contains one core group access point group for the core group that is in the cell, and one core group access point for each of the core groups in the other two cells.

The following sample shows the relationship between bridge interfaces and peer ports for the communication between cell_x and cell_z. In cell_x, there are two bridge interfaces defined. In cell_z, there is a peer access point for x_core_group_ap_2 that has peer ports defined that correspond to the bridge interface information that is defined in cell_x.

As a result, core_group_x , core_group_y and core_group_z can communicate with each other.

Communication between core groups across different networks

In this scenario, one core group is configured to communicate with two or more core groups in different cells across two or more networks. For example, a core group in cell_x needs to communicate with core groups in cell_y and cell_z. Create two access point groups in cell_x. The first access point group, access_point_group_xy, in cell_x contains a core group access point and a peer access point for the core group in cell_y. The second access point group in cell_x, access_point_group_xz, contains a core group access point and a peer access point for the core group in cell_z. Cell_y has an access point group named access_point_group_xy, which has a core group access point and a peer access point for cell_x. Cell_z has an access point group named access_point_group_xz which has a core group access point and a peer access point for cell_x.
See Creating advanced core group bridge configurations for more information.

Communication between core groups using a proxy peer access point

Use a proxy peer when the core groups cannot directly communicate. The two core groups must have access to a single core group that can pass information between the two core groups. To understand what a proxy peer access point does, consider a connecting flight when flying on an airplane. To fly from Pittsburgh to London you first have to fly to New York City, where you change planes and then fly to London. New York City is the proxy peer access point for London.

When defining a proxy peer, x_core_group_2 in cell_x cannot communicate directly with the core group in cell_z. However, both core groups can communicate with the core group in cell_y. To configure communication between cell_x and cell_z, you must configure two access point groups. The core group access point in cell_y is in both of these access point groups, named access_point_group_xy and access_point_group_yz. The following image shows an overview of a proxy peer configuration.
Figure 1. Core group communication using a proxy peer access point
See Configuring core group communication using a proxy peer access point for more information.



Related tasks
Configuring the core group bridge between core groups that are in different cells

Concept topic    

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Last updated: Mar 17, 2005 4:28:29 AM CST
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