1. MICE Mobility with ICE draft-wing-mmusic-ice-mobility-02 IETF85 Nov 2012 1 Authors: D.Wing, P. Patil, T. Reddy, P. Martinsen

2. Agenda : Changes from -01 to -02  Break Before Make  Absence of other interfaces in Valid list  Presence of other interfaces in Valid list  Keeping unused relayed candidates active  Make Before Make 2

3. Absence of other interfaces in Valid list

4. Break Before Make - Absence of other interfaces in Valid list Alice Bob Wifi 3G celltower RTP ICE Checks Server ICE restart 4 In parallel, (a) do ICE restart (to SIP proxy) and (b) do Mobile ICE. Necessary to accommodate simultaneous mobility.

5. Presence of other interfaces in Valid list

6. Break Before Make - Presence of other interfaces in Valid list Alice Bob Wifi 3G celltower RTP ICE Binding Req/Resp – Keep Alive RTP ICE restart ICE Check 6 Optional: maintain unused candidates on other interfaces (e.g., 3G and WiFi)

7. Keeping unused relayed candidates active

8. Discussion : Break Before Make Maintain Relayed Candidates Alice Bob Wifi 3G celltower RTP ICE Checks TURN ICE Checks RTP SIP Server ICE Restart 8 Helps with (a) Simultaneous Mobility or (b) or Bob behind Address-Dependent filtering NAT

9. MAKE BEFORE BREAK

10. Mobility Using ICE – Make Before Break Alice Bob Wifi 3G celltower RTP ICE Checks SIP Server ICE restart 10

11. FINISHED