1. 20021120 55 th IETF NEMO WG 1 NEMO RO Problem Space Prepared for 55 th IETF By Pascal Thubert (Cisco), Ng Chan Wah & Takeshi Tanaka (Panasonic) 20021120

2. 55 th IETF NEMO WG 2 Routes in NEMO  Nesting Basic support of Nemo leads to:  Processing overhead at MR and HA  Packets delivery latency  Packet fragmentation  … MR1 MR2CNVMN HA1 HA2 CR Internet HA-VMN HA1:HA of MR1 HA2:HA of MR2 HA-VMN:HA of VMN CR:Correspondent Router

3. 20021120 55 th IETF NEMO WG 3 Types of RO for NEMO  The Route Optimization problem space can be split into 4 possible types:  RO for nested mobile network  RO with visiting mobile host  RO with correspondent node  RO within routing infrastructure

4. 20021120 55 th IETF NEMO WG 4 RO for nested mobile network  Reduce the number of tunnels  Should impact only operations of MR and HA  Packets still experience ‘dog-leg’ routing MR1 MR2CNVMN HA1 HA2 CR Internet HA-VMN HA1:HA of MR1 HA2:HA of MR2 HA-VMN:HA of VMN CR:Correspondent Router

5. 20021120 55 th IETF NEMO WG 5 RO with VMH  Visiting mobile hosts participates in NEMO RO  May further reduce the number of tunnels required  Impact the operations of VMH, MR, and HA MR1 MR2CNVMN HA1 HA2 CR Internet HA-VMN HA1:HA of MR1 HA2:HA of MR2 HA-VMN:HA of VMN CR:Correspondent Router

6. 20021120 55 th IETF NEMO WG 6 RO with CN  Route Optimized between CN and MR/VMH  MIPv6 RR test between MR and CN is broken  May impact the operations of CN, in addition to VMH, MR and HA. MR1 MR2CNVMN HA1 HA2 CR Internet HA-VMN HA1:HA of MR1 HA2:HA of MR2 HA-VMN:HA of VMN CR:Correspondent Router

7. 20021120 55 th IETF NEMO WG 7 RO within routing infrastructure  Route Optimized between Correspondent Router and MR/VMH  May impact the operations of VMH, MR and HA  Correspondent Node can be a plain IPv6 host MR1 MR2CNVMN HA1 HA2 CR Internet HA-VMN HA1:HA of MR1 HA2:HA of MR2 HA-VMN:HA of VMN CR:Correspondent Router

8. 20021120 55 th IETF NEMO WG 8 Conclusion  Basic is sufficient for limited applications  RO is wanted for nested configurations  RO is critical for large deployments

9. 20021120 55 th IETF NEMO WG 9 Nemo RO Drafts so far  Informational  draft-thubert-nemo-ro-taxonomy-00.txt  Solutions  draft-ng-nemo-access-router-option-00.txt  draft-thubert-nemo-reverse-routing-header-01.txt