AutoIP -A mechanism for IPv6 migration and IPv4 sunsetting by Shishio Tsuchiya [A]
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AutoIP is a mechanism for IPv6 migration and IPv4 sunsetting that dynamically creates an overlay tunnel topology using native IGPs to discover tunnel endpoints. It allows networks to transition from IPv4 to IPv6 in phases, first deploying IPv6 over IPv4 tunnels, then IPv4 over IPv6, before finally transitioning to a native IPv6 network. Cisco has implemented AutoIP in early field trial code that establishes OSPFv3-based tunnels for IPv6 and IPv4 routing using GRE tunnels.
![13© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public
EFT implementation for OSPFv3 cont’d
JP2#show
ip
ospf
neighbor
Neighbor
ID
Pri
State
Dead
Time
Address
Interface
192.168.255.1
0
FULL/
-
00:00:32
192.168.255.1
Virtual-Access1
JP2#show
ip
route
ospf
-snip-
O
E2
10.10.10.0/30
[110/1]
via
192.168.255.1,
00:15:01,
Virtual-Access1
O
E2
10.10.10.4/30
[110/1]
via
192.168.255.1,
00:15:01,
Virtual-Access1
-snip-
O
192.168.255.1
[110/3]
via
192.168.255.1,
00:15:01,
Virtual-Access1
O
192.168.255.3
[110/5]
via
192.168.255.1,
00:13:48,
Virtual-Access1
O
192.168.255.4
[110/4]
via
192.168.255.1,
00:15:01,
Virtual-Access1
-snip-](https://image.slidesharecdn.com/autoip-lt14236664531425507333-150304164507-conversion-gate01/85/AutoIP-A-mechanism-for-IPv6-migration-and-IPv4-sunsetting-by-Shishio-Tsuchiya-A-13-320.jpg)
![AutoIP -A mechanism for IPv6 migration and IPv4 sunsetting by Shishio Tsuchiya [A]](https://image.slidesharecdn.com/autoip-lt14236664531425507333-150304164507-conversion-gate01/85/AutoIP-A-mechanism-for-IPv6-migration-and-IPv4-sunsetting-by-Shishio-Tsuchiya-A-15-320.jpg)
AutoIP -A mechanism for IPv6 migration and IPv4 sunsetting by Shishio Tsuchiya [A]
- 1. A mechanism for IPv6 migration and IPv4 sunsetting AutoIP Shishio Tsuchiya – CSE shtsuchi@cisco.com Ole Trøan – Tech Lead Steve Simlo – Product Manager
- 2. 2© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • A mechanism for IPv6 migration and IPv4 sunsetting • Dynamically Create Overlay Tunnel Topology • Use Native IGP to discovery tunnel end point What is AutoIP?
- 3. 3© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public IPv6 Network Transition – AutoIP Phases When AutoIP will be needed IPv4 Access Network IPv4 Core Edge Network IPv4 only IPv6 Access Network IPv6 Core Edge Network IPv6-Only Dual Stack Core + Access Edge Network Dual Stack PE CE Edge Network v4 over v6 Dual Stack Core 4over6 AutoIP Phase CE Dual Stack Core v6 over v4 Edge Network AutoIP Phase 6over4 CE IPv6 Transition Technology 6 over 4 IPv4 Sunset Technology 4 over 6 IPv4 IPv6
- 4. 4© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • Current most of enterprise network status • What is problem to deploy IPv6 -Hardware not support IPv6 - Software not support IPv6 -Lack of IPv6 feature - Lack of resource to deploy new protocol(IPv6) and new routing protocol(ex.OSPFv3) IPv4 only IPv4 Access Network IPv4 Core Edge Network IPv4 only OSPFv2 OSPFv2 OSPFv2 OSPFv2
- 5. 5© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • IPv4/IPv6 enabled on dual Stack capable node/network • Enabled AutoIP, then it makes IPv6 over IPv4 tunnel automatically • Can use different routing protocol in each of address families. ex. EIGRP using in IPv4 but would like to use OSPFv3 in IPv6. AutoIP Phase IPv6 over IPv4 Dual Stack Core v6 over v4 Edge Network AutoIP Phase 6over4 CE OSPFv2 AutoIP OSPFv2 OSPFv2 AutoIP OSPFv2 OSPFv3 OSPFv3 OSPFv3 IPv6 unaware IPv6 over IPv4
- 6. 6© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • IPv6 enable on all of node/network • The Problem is …have to manage multiple routing protocols IPv4/IPv6 Dual Stack OSPFv3 Dual Stack Core + Access Edge Network Dual Stack CE OSPFv2 OSPFv2 OSPFv2 OSPFv2 OSPFv3 OSPFv3 OSPFv3
- 7. 7© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • AutoIP enable for IPv6 terminal undeveloped site or IPv4 necessary site • Established IPv4 over IPv6 tunnel automatically • routing metric for tunnel would be -1 than actual routing metric. so traffic does not transit at this point. AutoIP Phase IPv4 Sunset IPv4 over IPv6 Edge Network v4 over v6 Dual Stack Core 4over6 AutoIP Phase CE OSPFv3 OSPFv2 OSPFv2 OSPFv2 OSPFv2 OSPFv3 AutoIP OSPFv3 OSPFv3 AutoIP IPv4 over IPv6
- 8. 8© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • IPv4 routing protocol disabled on intermediate node • OSPFv2 only running over overlay topology AutoIP Phase IPv4 Sunset IPv4 over IPv6 OSPFv3 OSPFv2 OSPFv2 OSPFv3 AutoIP OSPFv3 OSPFv3 AutoIP IPv4 over IPv6 Edge Network v4 over v6 Dual Stack Core 4over6 AutoIP Phase CE
- 9. 9© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • Disable IPv4 on all of network when deployed all of IPv6 enable terminal IPv6 only network IPv6 Access Network IPv6 Core Edge Network IPv6-Only PE OSPFv3OSPFv3 OSPFv3 OSPFv3 Final
- 10. 10© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public AutoIP setup sequence End Point Discovery distribute node information in network by extension IGP OSPFv2 Router Information (RI) Opaque LSA OSPFv3 Router Information (RI) Opaque LSA(RFC4970) EIGRP:Community TLV Overlay Topology Calculation uses shortest tunnel （not full mesh ） Tunnel Setup Stateless: GRE/IPinIP Signaled: IKE/L2TP I can talk GRE I can talk GRE R1 Shortest Path via R1 Shortest Path via R1 R1 R1
- 11. 11© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • AutoIP is standard based technology set Routing Information LSA(RFC4970) Tunnel Attribute(RFC5512/RFC5566) Tunnel Setup(GRE/IPinIP/L2TP/IPSec) • Cisco already provide running code as EFT(Early Field Trial) http://6lab.cisco.com/autoip/ Support EIGRP for IPv4/IPv6 and OSPFv2/OSPFv3 GRE tunnel type support use tunnel template for tunnel create Running Code
- 12. 12© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public EFT implementation for OSPFv3 interface Virtual-Template1 type tunnel ip unnumbered Loopback0 ipv6 enable tunnel source Loopback0 tunnel mode gre ipv6 ! autoip ospfv3 1 area 0 ipv6 template Virtual-Template1 ! JP2#show ospfv3 database autoip OSPFv3 1 address-family ipv6 (router-id 192.168.255.2) AutoIP (Type-13) Link States (Area 0) LS age: 87 Link State ID: 0 (Interface ID) Advertising Router: 192.168.255.1 LS Seq Number: 80000036 Checksum: 0x73CA Length: 40 IPV6 Destination to this node: FD89:250E:192:168:FFFF::1 --snip--
- 13. 13© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public EFT implementation for OSPFv3 cont’d JP2#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 192.168.255.1 0 FULL/ - 00:00:32 192.168.255.1 Virtual-Access1 JP2#show ip route ospf -snip- O E2 10.10.10.0/30 [110/1] via 192.168.255.1, 00:15:01, Virtual-Access1 O E2 10.10.10.4/30 [110/1] via 192.168.255.1, 00:15:01, Virtual-Access1 -snip- O 192.168.255.1 [110/3] via 192.168.255.1, 00:15:01, Virtual-Access1 O 192.168.255.3 [110/5] via 192.168.255.1, 00:13:48, Virtual-Access1 O 192.168.255.4 [110/4] via 192.168.255.1, 00:15:01, Virtual-Access1 -snip-
- 14. 14© 2014 Cisco and/or its affiliates. All rights reserved. Cisco Public • AutoIP is a mechanism for IPv6 migration and IPv4 sunsetting • AutoIP is standard based technology • Running code exists. • If interested in, let us know and try EFTJ Summary