The Definition of an Address Pair Address pair A pair of addresses (src, dst) used in communications between two peers Operational address pair Both addresses are locally operational Traffic flows when the pair is used Note 1: due to NATs, firewalls, etc. the operational status may depend on the type of traffic (IKEv2, HTTP etc) Note 2: there can be many address pairs if both peers have multiple addresses -- and hard to know a priori which ones work |