Channel Selection Internal Channels Within a Cluster

Configuring Network Resources 4-7 ■ Other types of network traffic, for example replication data, need to occur over a separate network connection. ■ Certain types of network traffic need to be monitored.

4.2.4.1 Channel Selection

All internal traffic is handled via a network channel. If you have not created a custom network channel to handle administrative or clustered traffic, WebLogic Server automatically selects a default channel based on the protocol required for the connection. For more information on default channels, see Section 4.2.3.1, The Default Network Channel .

4.2.4.2 Internal Channels Within a Cluster

Within a cluster, internal channels can be created to handle to the following types of server-to-server connections: ■ Multicast traffic ■ Replication traffic ■ Administration traffic For more information on configuring channels within a cluster, see Section 4.3.2, Configuring Network Channels For a Cluster .

4.3 Configuring a Channel

You can configure a network channel using Servers Protocols Channels page in the Administration Console or using the NetworkAccessPointMBean. To configure a channel for clustered Managed Servers see, Section 4.3.2, Configuring Network Channels For a Cluster . For a summary of key facts about network channels, and guidelines related to their configuration, see Section 4.3.1, Guidelines for Configuring Channels .

4.3.1 Guidelines for Configuring Channels

Follow these guidelines when configuring a channel.

4.3.1.1 Channels and Server Instances

■ Each channel you configure for a particular server instance must have a unique combination of listen address, listen port, and protocol. ■ A channel can be assigned to a single server instance. ■ You can assign multiple channels to a server instance. ■ If you assign non-SSL and SSL channels to the same server instance, make sure that they do not use the same combination of address and port number.

4.3.1.2 Dynamic Channel Configuration

■ In WebLogic Server, you can configure a network channel without restarting the server. Additionally, you can start and stop dynamically configured channels while the server is running. However, when you shutdown a channel while the server is running, the server does not attempt to gracefully terminate any work in progress.