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Configuring Auto-RP Mapping Agent Election

Auto-RP specifications state that mapping agents should not send mapping messages if they receive messages from a mapping agent with a higher IP address. This process is called mapping agent election. However, some vendors' mapping agents continue to announce mappings, even in the presence of higher-addressed mapping agents. In other words, some mapping agents will always send mapping messages.

For compatibility, you can suppress mapping messages with the mapping-agent-election statement. When this option is configured, the mapping agent will stop sending mapping messages if it receives messages from a mapping agent with a higher IP address.

The default auto-RP operation is to perform mapping agent election. To explicitly enable mapping agent election, configure the mapping-agent-election statement at the [edit protocols pim rp auto-rp] hierarchy level of an auto-RP mapping agent:



auto-rp {
mapping;

mapping-agent-election;
}

Mapping message suppression is disabled with the no-mapping-agent-election statement. When this option is configured, the mapping agent will always send mapping messages even in the presence of higher-addressed mapping agents.

To explicitly disable mapping agent election for compatibility with other vendors' equipment, configure the no-mapping-agent-election statement at the [edit protocols pim rp auto-rp] hierarchy level of an auto-RP mapping agent:



auto-rp {
mapping;
no-mapping-agent-election;
}

You can include this statement at the following hierarchy levels:

[edit protocols]
[edit routing-instances routing-instance-name protocols]
[edit logical-systems logical-system-name protocols]
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols]

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