The DSR supports Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) simultaneously for local DSR node addressing. Optionally, either an IPv4 or IPv6 address can be defined for each Diameter connection. The DSR supports both Layer 2 and Layer 3 connectivity at the customer demarcation using 1GB and optionally 10 GB (signaling only) uplinks.
The DSR supports establishing Diameter connections with IPv4 and IPv6 Peers as follows:
- Multiple IPv4 and IPv6 addresses can be hosted simultaneously on a DSR MP.
- Each Diameter Peer connection (SCTP or TCP) configured in the DSR will specify a local DSR node (FQDN) and an associated local IPv4 or IPv6 address set for use when establishing the connection with the Peer.
- Each Diameter Peer connection (SCTP or TCP) configured in the DSR will specify a Peer Node (FQDN) and optionally the Peer Node's IPv4 or IPv6 address set.
- If the Peer Node's IP address set is specified, it must be of the same type (IPv4 or IPv6) as the local DSR IP address set specified for the connection.
- If the Peer Node's IP address set is not specified, DSR will resolve the Peer Node's FQDN to an IPv4 or IPv6 address set by performing a DNS A or AAAA record lookup as appropriate based on the type (IPv4 or IPv6, respectively) of the local DSR IP address set specified for the connection.
The DSR supports IPv4/IPv6 adaptation by allowing connections to be established with IPv4 and IPv6 Diameter Peers simultaneously and allowing Diameter Requests and Answers to be routed between the IPv4 and IPv6 Peers.