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, include the mapping-agent-election statement for an auto-RP mapping agent:
- [edit protocols pim rp]
- 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, include the no-mapping-agent-election statement for an auto-RP mapping agent:
- [edit protocols pim rp]
- auto-rp {
- mapping;
- no-mapping-agent-election;
- }
You can include these statements at the following hierarchy levels: