Diameter Peers

Nodes with a direct TCP or SCTP transport connection are Peers.

• A node SHOULD have a connection with at least two peers per realm (primary and secondary).

• Peers may be statically configured or dynamically discovered

• Static configuration requires: - either the IP address, or - the FQDN (DNS can then resolve FQDN into IP-address)

• Dynamic discovery based on: - DNS procedures using NAPTR and/or SRV queries

A new Peer creates an entry in the

- Peer Table, and

- Routing Table (for other realms)

Entries created via DNS MUST be refreshed periodically.

When no transport connection exists with a peer, an attempt to connect SHOULD be made periodically (recommended every 30 s).