1. Network Performance Test on IPv6 2003. 8. Technology Laboratory, KT Choi Sung Mi smchoi@kt.co.kr

2. 2 2 Contents Introduction IPv6 Performance Test Background Transition mechanism for test Equipment Test Configuration & Result Test summary conclusion

3. 3 3 Introduction IPv6 activities in KT 1999 KT have got first commercial IPv6 address allocation in Korea 1999 Korea’s first native IPv6 network on KOREN (Technology laboratory) 2001 Mobile IPv6 Test (Multimedia laboratory)

4. 4 4 Background We want to minimize the investment for IPv6 Consider using legacy network and idle equipment for IPv6 Need the information about IPv6 performance on legacy network Determine IPv6 deployment strategy based on the performance test result

5. 5 5 Transition Mechanism for Test Daul Stack Applications UDP/TCP IPv4 Physical Layer Applications UDP/TCP IPv6 Physical Layer Applications UDP/TCP IPv4 Physical Layer IPv6 6/4 6 4 IPv4/IPv6 Dual Network IPv4 IPv6

6. 6 6 Transition Mechanism for Test 6to4 Tunnel IPv6 Host 6/4 IPv6 Network IPv6 Network IPv4 Network SRC: 6to4 IPv6 DST: 6to4 IPv6 Payload IPv6 Header SRC: 6to4 IPv6 DST: 6to4 IPv6 Payload IPv6 Header SRCDST IPv4 Header 6to4 Router IPv6 Host   6to4 Address 2002 V4 address SLA ID Interface ID 163216 64 6/4

7. 7 7 Transition Mechanism for Test IPv6 over MPLS (Cisco 6PE) V6-h = IPv6 header V6-P = IPv6 payload L1 and L3 = V4 labels L2 = Aggregate IPv6 Label MPLS/IPv4 Network 6PE IPv6 Network IPv6 Network V6-h V6-p P1P2 L1 L2 V6-h V6-pL3 L2 V6-h V6-p L2 V6-h V6-pV6-h V6-p MP-IBGP

8. 8 8 Equipment DUT (Device under Test) Cisco 7513 with Fast Ethernet ports Cisco 12000 with Gigabit Ethernet and 2.5G POS ports Software SW IOS 12.0(19)S2 for Cisco 7513 SW IOS 12.0(22)S for Cisco 12000 Tester IXIA 400 Router Tester

9. 9 9 Test Configuration & Results Dual Stack (Cisco 7513)

10. 10 Test Configuration & Results Dual Stack (Cisco 7513)

11. 11 Test Configuration & Results Dual Stack (Cisco 12000) Router Tester 4/6 7513 Gigabit Ethernet interface Cisco 12008

12. 12 Test Configuration & Results Dual Stack Cisco 12000 (Gigabit Ethernet)

13. 13 Test Configuration & Results Dual Stack Cisco 12000 (POS 2.5G)

14. 14 Test Configuration & Results 6to4 Tunnel

15. 15 Test Configuration & Results 6to4 Tunnel

16. 16 Test Configuration & Results IPv6 over MPLS (Cisco 6PE)

17. 17 Test Configuration & Results IPv6 over MPLS (Cisco 6PE)

18. 18 Test Summary IPv6 performance is inferior to IPv4 The Cisco router enables IPv6 routing based on software not hardware 6to4 tunneling performance is very poor but Cisco 6PE performance is good The MPLS labeling doesn’t affect the performance of IPv6.

19. 19 Conclusion What we have done   Test and verification of IPv6 protocols   Test and verification of IPv4/IPv6 transition mechanisms   The performance evaluation of IPv6 equipment   Design and operation of the Korea’s first native IPv6 network What we will do   Provide IPv4/IPv6 migration plan and IPv6 deployment strategy   Develop IPv6 applications and services   Provide field trial prior to commercial service