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Cluster --> Configuration --> Multicast

Tasks     Related Topics     Attributes

Overview

Use this tab to configure the address and port upon which the server instances in a cluster broadcast service availability and heart beat messages. It is most efficient to dedicate the multicast address and port to a single cluster, although multiple WebLogic Server clusters can share a single multicast address and port. No other applications should broadcast or subscribe to the multicast address and port used by your cluster or clusters.

Tasks

Configuring a Cluster

Related Topics

"One-to-Many Communication Using IP Multicast" in Using WebLogic Server Clusters

"Cluster Multicast Address and Port" in Using WebLogic Server Clusters

Attributes

Table 2-2

Attribute Label

Description

Value Constraints

Multicast Address

The multicast address used by cluster members to communicate with each other.

MBean: weblogic.management.
configuration.ClusterMBean

Attribute: MulticastAddress

Default: "237.0.0.1"

Configurable: yes

Multicast Port

The multicast port used by cluster members to communicate with each other.

MBean: weblogic.management.
configuration.ClusterMBean

Attribute: MulticastPort

Minimum: 1

Maximum: 65535

Default: 7001

Configurable: yes

Multicast Send Delay

The number of milliseconds to delay sending message fragments over multicast in order to avoid OS-level buffer overflow.

MBean: weblogic.management.
configuration.ClusterMBean

Attribute: MulticastSendDelay

Minimum: 0

Maximum: 100

Default: 3

Configurable: yes

Multicast TTL

The time-to-live value for the cluster's multicast address.

MBean: weblogic.management.
configuration.ClusterMBean

Attribute: MulticastTTL

Minimum: 1

Maximum: 255

Default: 1

Configurable: yes

Multicast Buffer Size

The multicast socket send/receive buffer size.

MBean: weblogic.management.
configuration.ClusterMBean

Attribute: MulticastBufferSize

Units: kilobytes

Minimum: 64

Default: 64

Configurable: yes

 

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