Table Of Contents

Start Here: Cisco IOS Software Release Specifics for IPv6 Features

Cisco IOS Software Platform Dependencies and Restrictions

Cisco IOS IPv6 Features and Supported Software Releases

Cisco Platforms Supporting IPv6 Hardware Forwarding

Supported Platforms

Additional 12.2S Release Trains

Additional References

Related Documents

RFCs

MIBs

Start Here: Cisco IOS Software Release Specifics for IPv6 Features

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This document lists the IP version 6 (IPv6) features supported in the 12.0S, 12.xT, 12.2S family, XE, 12.3, and 12.4 Cisco IOS software release trains.

The IPv6 for Cisco IOS Software feature documentation provides implementation and command reference information for IPv6 features supported in the Cisco IOS software. This Start Here document details only the Cisco IOS software release specifics for IPv6 features. Not all IPv6 features may be supported in your Cisco IOS software release. We strongly recommend that you read this entire document before reading the other IPv6 for Cisco IOS software feature documentation.

Finding Support Information for Platforms and Cisco IOS and Catalyst OS Software Images

Use Cisco Feature Navigator to find information about platform support and Cisco IOS and Catalyst OS software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

The Cisco IOS IPv6 Configuration Guide is located at the following website:

http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide

The Cisco IOS IPv6 Command Reference is located at the following website:

http://www.cisco.com/en/US/docs/ios/ipv6/command/reference

The following sections are included in this document:

•Cisco IOS Software Platform Dependencies and Restrictions

•Cisco IOS IPv6 Features and Supported Software Releases

•Cisco Platforms Supporting IPv6 Hardware Forwarding

•Additional References

Cisco IOS Software Platform Dependencies and Restrictions

IPv6 features are supported in the 12.0S, 12.xT, 12.2S, 12.2SB, 12.2SE, 12.2SG, 12.2SR, 12.2SX, XE, 12.3, and 12.4 Cisco IOS software release trains, starting at Cisco IOS Release 12.0(22)S, 12.2(2)T, 12.2(14)S, 12.2(28)SB, 12.2(25)SEA, 12.2(33)SRA, 12.2(17a)SX1, 12.3, and 12.4, respectively. See Table 1 to determine which IPv6 features are supported in each release of the 12.0S, 12.xT, 12.2S, 12.2SB, 12.2SR, 12.2SX, 12.3, and 12.4 Cisco IOS software trains.

•IPv6 was introduced on the 12.0(21)ST Cisco IOS software release train, which was merged with the 12.0S Cisco IOS software release train starting at Cisco IOS Release 12.0(22)S. The 12.0S Cisco IOS software release train provides IPv6 support on Cisco 12000 series Internet routers and Cisco 10720 Internet routers only.

•The 12.2S Cisco IOS release train comprises a family of release trains, each supporting different platforms as follows:

–The 12.2SB Cisco IOS release train comprises the Cisco 10000, 7304, 7301, and 7200 series. As of Cisco IOS Release 12.2(33)SB, the Cisco 7200 and 7301 series are not supported on the 12.2SB release train.

–The 12.2SE Cisco IOS release train consists of the Cisco Catalyst 3560, 3750, 3560E, and 3750E series.

–The 12.2SG Cisco IOS release train consists of the Cisco Catalyst 4500 and Cisco Catalyst 4900 series.

–The 12.2SR Cisco IOS release train consists of the Cisco 7600 and 7200 series routers.

–The 12.2SX Cisco IOS release train consists of the Cisco Catalyst 6500. Before the 12.2SR Cisco IOS release train, the 12.2SX release train also included the Cisco 7600 series.

•IPv6 is also supported in some special software release trains.

Cisco IOS IPv6 Features and Supported Software Releases

Table 1 lists the IPv6 features supported in the 12.0S, 12.xT, 12.2S, 12.2SB, 12.2SR, 12.2SX, 12.3, and 12.4 Cisco IOS software release trains.

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Note Table 1 identifies the earliest release for each software release train in which the feature became available. Unless noted otherwise in Table 1, subsequent releases of that Cisco IOS software release train also support that feature.

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Table 1

Feature	Where Documented	12.0S Release	12.xT Release	12.x Release	12.2SB Release	12.2SE Release	12.2SG Release	12.2SR Release	12.2SX Release
IPv6		(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6 address types: Unicast	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	(25)SEA	—	(33)SRA	(17a)SX1
IPv6: uRPF	Implementing IPv6 Addressing and Basic Connectivity	(31)	—	—	—	—	—	—	—
IPv6: ICMPv6	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)1	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6: IPv6 neighbor discovery	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6: IPv6 stateless autocon- figuration	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	—	(25)	(33)SRA	(17a)SX1
IPv6: IPv6 MTU path discovery	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6: ping	Implementing IPv6 for Network Management	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6: Telnet, DNS, TFTP client, traceroute	Implementing IPv6 Addressing and Basic Connectivity, Implementing IPv6 for Network Management	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6: ICMPv6 redirect	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(4)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6: ICMP rate limiting	Implementing IPv6 Addressing and Basic Connectivity	—	12.2(8)	12.3	—	—	—	—	—
IPv6: neighbor discovery duplicate address detection	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(4)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6: IPv6 static cache entry for neighbor discovery	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(8)	12.3	(28)	(25)SEA	—	(33)SRA	(17a)SX1
IPv6 address types: Anycast	Implementing IPv6 Addressing and Basic Connectivity	—	12.3(4)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6: NetFlow for IPv6 unicast traffic	Implementing NetFlow for IPv6	—	12.3(7)	12.4	—	—	—	(33)SRB	(33)SXH
IPv6: NetFlow: Flexible NetFlow for IPv6 replaces IPv6 NetFlow	Implementing NetFlow for IPv6	—	12.4(20)	—	—	—	—	—	—
IPv6: Mobile IPv6 home agent	Implementing Mobile IPv6	—	12.3(14)	12.4	—	—	—	—	—
IPv6: IPv6 default router preferences	Implementing IPv6 Addressing and Basic Connectivity	—	12.4(2)	—	(33)	—	—	(33)SRA	(33)SXH
IPv6: IPv6 ACL extensions for Mobile IPv6	Implementing Mobile IPv6	—	12.4(2)	—	—	—	—	(33)SRB	(33)SXI
IPv6: Mobile IP - Mobile v6 - Basic NEMO	Implementing Mobile IPv6	—	12.4(20)	—	—	—	—	—	—
IPv6: IP Receive ACL for IPv6 traffic	IP Receive ACL	(32)	—	—	—	—	—	—	—
IPv6: syslog over IPv6	Implementing IPv6 for Network Management	—	12.4(4)	—	(33)	—	—	(33)SRB	(33)SXI
IPv6: IPv6 VPN over MPLS	Implementing IPv6 VPN over MPLS	—	12.4(20)	—	(33)	—	—	(33)SRB	(33)SXI
IPv6: MPLS VPN 6VPE support over IP tunnels	Implementing IPv6 VPN over MPLS (6VPE)	—	—	—	—	—	—	(33)SRB1	(33)SXI
IPv6: CNS agents for IPv6	Implementing IPv6 for Network Management	—	12.4(20)	—	(33)	—	—	(33)SRC	—
IPv6: IP SLAs for IPv6	Implementing IPv6 for Network Management	—	12.4(20)	—	(33)	—	—	(33)SRC	—
IPv6: IPv6 for config logger	Implementing IPv6 for Network Management	—	12.4(20)	—	(33)	—	—	(33)SRC	—
IPv6: IPv6 Netconf support	Implementing IPv6 for Network Management	—	12.4(20)	—	(33)	—	—	(33)SRC	—
IPv6: IPv6 support for TCL	Implementing IPv6 for Network Management	—	12.4(20)	—	—	—	—	(33)SRC	—
IPv6: IPv6 support in SOAP	Implementing IPv6 for Network Management	—	12.4(20)	—	(33)	—	—	(33)SRC	—
IPv6: HTTP(S) IPv6 support (Infrastructure)	Implementing IPv6 for Network Management	—	12.4(20)	—	(33)	—	—	(33)SRC	—
IPv6: no ipv6 source-route command	Cisco IOS IPv6 Command Reference	—	12.3(4)	12.4	—	—	—	(33)SRB1	—
IPv6 Switching Services
IPv6 switching: automatic 6to4 tunnels	Implementing Tunneling for IPv6	(22)2	12.2(2)	12.3	(28)SB	—	—	(33)SRA	(17a)SX1
IPv6 switching: Cisco Express Forwarding/distributed Cisco Express Forwarding support	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(13)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6 switching: CEFv6 switched configured IPv6 over IPv4 tunnels	Implementing Tunneling for IPv6	—	12.2(13)	12.4	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 switching: provider edge router over MPLS (6PE)3 4	Implementing IPv6 over MPLS	(22)	12.2(15)	12.3	(31)	—	—	(33)SRA	(17b)SXA
IPv6 switching: CEFv6 switched ISATAP tunnels	Implementing Tunneling for IPv6	—	12.3(2)	12.4	(28)	—	(25)	(33)SRA	(17a)SX1
IPv6 switching: CEFv6 switched automatic IPv4- compatible tunnels	Implementing Tunneling for IPv6	—	12.3(2)	12.4	(28)	—	(25)	(33)SRA	(17a)SX1
IPv6 Routing
IPv6 routing: RIP for IPv6 (RIPng)	Implementing RIP for IPv6	(22)	12.2(2)5	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6 routing: static routing	Implementing Static Routes for IPv6	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6 routing: route redistribution	Implementing IS-IS for IPv6, Implementing RIP for IPv6	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(18)SXE
IPv6 routing: multiprotocol BGP extensions for IPv6	Implementing Multiprotocol BGP for IPv6	(22)	12.2(2)6	12.3	(28)	—	(25)	(33)SRA	(17a)SX1
IPv6 routing: multiprotocol BGP link-local address peering	Implementing Multiprotocol BGP for IPv6	(22)	12.2(4)	12.3	(28)	—	(25)	(33)SRA	(17a)SX1
IPv6 routing: IS-IS support for IPv6	Implementing IS-IS for IPv6	(22)	12.2(8)	12.3	(28)	—	(25)	(33)SRA	(17a)SX1
IPv6 routing: IS-IS multitopology support for IPv6	Implementing IS-IS for IPv6	(26)	12.2(15)	12.3	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 routing: OSPF for IPv6 (OSPFv3)	Implementing OSPF for IPv6	(24)	12.2(15)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6 routing: OSPF for IPv6 authentication support with IPSec	Implementing OSPF for IPv6	—	12.3(4)	12.4	—	—	—	—	—
IPv6 Routing: OSPF IPv6 (OSPFv3) IPSec ESP Encryption and Authentication	Implementing OSPF for IPv6	—	12.4(9)	—	—	—	—	—	—
OSPFv3 dynamic interface cost support	Implementing OSPF for IPv6	—	12.4(15)	—	—	—	—	—	—
IPv6 routing: IPv6 policy-based routing	Implementing Policy-Based Routing for IPv6	—	12.3(7)	12.4	—	—	—	—	—
IPv6 routing: EIGRP support	Implementing EIGRP for IPv6	—	12.4(6)	—	—	(40)SE	—	(33)SRB	(33)SXI
IPv6 routing: OSPFv3 Fast Convergence - LSA and SPF throttling	Implementing OSPF for IPv6	—	—	—	(33)	—	—	(33)SRC	—
IPv6 Services and Management
IPv6 services: AAAA DNS lookups over an IPv4 transport	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(17a)SX1
IPv6 services: standard access control lists	Implementing Traffic Filters and Firewalls for IPv6 Security	(22)	12.2(2)	12.3	(28)	(25)SED	(25)	(33)SRA	(17a)SX1
IPv6 services: IPv6 ACL extensions for IPsec authentication header	Implementing Traffic Filters and Firewalls for IPv6 Security	—	12.4(20)	—	—	—	—	—	—
IPv6 services: DNS lookups over an IPv6 transport	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(8)	12.3	(28)	(25)SED	(25)	(33)SRA	(17a)SX1
IPv6 services: Secure Shell (SSH) support over IPv6	Implementing IPv6 for Network Management	(22)	12.2(8)	12.3	(28)	(25)SEE	(25)	(33)SRA	(17a)SX1
IPv6 services: Cisco Discovery Protocol— IPv6 address family support for neighbor information	Implementing IPv6 Addressing and Basic Connectivity	—	12.2(8)	12.3	(28)	(25)SEE	(25)	(33)SRA	(18)SXE
IPv6 services: CISCO-IP- MIB support	Implementing IPv6 for Network Management	(22)	12.2(15)	12.3	(28)	(25)SEE	(25)	(33)SRA	(18)SXE
IPv6 services: CISCO-IP-FORWARDING- MIB support	Implementing IPv6 for Network Management	(22)	12.2(15)	12.3	(28)	(25)SEE	(25)	(33)SRA	(18)SXE
IPv6 services: IP tunnel MIB support	Implementing IPv6 Addressing and Basic Connectivity	—	—	—	—	—	—	(33)SRB	—
IPv6 services: RFC 4293 IP-MIB (IPv6 only) and RFC 4292 IP-FORWARD-MIB (IPv6 only)	Implementing IPv6 for Network Management	—	—	—	—	—	—	(33)SRC	—
IPv6 services: extended access control lists4	Implementing Traffic Filters and Firewalls for IPv6 Security	(23)	12.2(13)	12.3	(28)	(25)SED	(25)	(33)SRA	(17a)SX1
IPv6 services: generic prefix	Implementing IPv6 Addressing and Basic Connectivity	—	12.3(4)	12.4	—	—	—	—	—
IPv6 services: SNMP over IPv67	Implementing IPv6 for Network Management	(27)	12.3(14)	12.4	(33)	—	—	(33)SRB	(33)SXI
SNMPv3 - 3DES and AES Encryption Support	Implementing IPv6 for Network Management	—	12.4(2)	—	(33)	—	—	(33)SRB	(33)SXI
IPv6 services: IPv6 IOS Firewall	Implementing Traffic Filters and Firewalls for IPv6 Security	—	12.3(7)	12.4	—	—	—	—	—
IPv6 services: IPv6 IOS Firewall FTP application support	Implementing Traffic Filters and Firewalls for IPv6 Security	—	12.3(11)	—	—	—	—	—	—
IPv6 services: IPv6 IPSec VPN	Implementing IPSec in IPv6 Security	—	12.4(4)	—	—	—	—	—	—
IPv6 Secure Neighbor Discovery (SeND)	Implementing Secure Neighbor Discovery in IPv6	—	12.4(24)	—	—	—	—	—	—
IPv6 services: IPv6 over DMVPN	Implementing Dynamic Multipoint VPN over IPv6	—	12.4(20)	—	—	—	—	—	—
IPv6 services: HSRP for IPv6	Configuring First Hop Redundancy Protocols in IPv6	—	12.4(4)	—	—	—	—	(33)SRB	(33)SXI
IPv6 services: FHRP - GLBP for IPv6	Configuring First Hop Redundancy Protocols in IPv6	—	12.4(6)	—	—	—	—	—	(33)SXI
IPv6 over Frame Relay	Implementing IPv6 over Frame Relay	(33)	—	—	—	—	—	—	—
NTPv4 in IPv6	Implementing NTPv4 in IPv6	—	12.4(20)	—	—	—	—	—	—
IPv6 Broadband Access
IPv6 access services: PPPoA	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)	12.3	—	—	—	—	—
IPv6 access services: PPPoE	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)	12.3	—	—	—	—	—
IPv6 access services: prefix pools	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)	12.3	—	—	—	—	—
IPv6 access services: AAA support for Cisco VSA IPv6 attributes	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)	12.3	—	—	—	—	—
IPv6 access services: remote bridged encapsulation	Implementing IPv6 Addressing and Basic Connectivity	—	12.3(4)	12.4	—	—	—	—	—
IPv6 access services: AAA support for RFC 3162 IPv6 RADIUS attributes	Implementing ADSL and Deploying Dial Access for IPv6	—	12.3(4)	12.4	—	—	—	—	—
DHCP for IPv6
IPv6 access services: stateless DHCPv6	Implementing DHCP for IPv6	(32)8	12.3(4)	12.4	(28)	—	—	(33)SRA	(18)SXE
IPv6 access services: DHCPv6 prefix delegation	Implementing DHCP for IPv6, Implementing ADSL and Deploying Dial Access for IPv6	(32)8	12.3(4)	12.4	(28)	—	—	(33)SRA	(18)SXE
IPv6 access services: DHCP for IPv6 relay agent	Implementing DHCP for IPv6	—	12.3(11)	12.4	(28)	(46)	(50)	(33)SRC	(33)SXI
IPv6 access services: DHCPv6 prefix delegation via AAA	Implementing ADSL and Deploying Dial Access for IPv6	—	12.3(14)	12.4	(28)9	—	—	—	—
IPv6 access services: DHCPv6 Server Stateless Auto Configuration	Implementing DHCP for IPv6	—	12.4(15)	—	—	—	—	—	—
IPv6 access services: DHCPv6 Client Information Refresh Option	Implementing DHCP for IPv6	—	12.4(15)	—	—	—	—	—	—
IPv6 access services: DHCPv6 relay agent notification for prefix delegation10	Implementing DHCP for IPv6	—	—	—	—	(46)	—	(33)SRC	(33)SXI
IPv6 access services: DHCPv6 relay - reload persistent interface ID option	Implementing DHCP for IPv6	—	—	—	(33)	(46)	—	(33)SRC	(33)SXI
IPv6 access services: DHCPv6 Ethernet remote ID option	Implementing DHCP for IPv6	—	—	—	—	(46)	—	(33)SRC	(33)SXI
DHCP - DHCPv6 Individual Address Assignment	Implementing DHCP for IPv6	—	12.4(24)	—	—	(46)	—	—	—
IPv6 Multicast		(26)11	12.3(2)	12.4	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 multicast: Multicast Listener Discovery (MLD) protocol, versions 1 and 2	Implementing IPv6 Multicast	(26)11	12.3(2)	12.4	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 multicast: PIM sparse mode (PIM-SM)	Implementing IPv6 Multicast	(26)11	12.3(2)	12.4	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 multicast: PIM Source Specific Multicast (PIM-SSM)	Implementing IPv6 Multicast	(26)11	12.3(2)	12.4	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 multicast: scope boundaries	Implementing IPv6 Multicast	(26)11	12.3(2)	12.4	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 multicast: MLD access group	Implementing IPv6 Multicast	(26)11	12.3(4)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6 multicast: PIM accept register	Implementing IPv6 Multicast	(26)11	12.3(4)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6 multicast: PIM embedded RP support	Implementing IPv6 Multicast	(26)11	12.3(4)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6 multicast: RPF flooding of bootstrap router (BSR) packets	Implementing IPv6 Multicast	(26)11	12.3(4)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6 multicast: routable address hello option	Implementing IPv6 Multicast	(26)11	12.3(4)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6 multicast: static multicast routing (mroute)	Implementing IPv6 Multicast	(26)11	12.3(4)	12.4	(28)	—	—	(33)SRA	(33)SXH
IPv6 multicast: address family support for multiprotocol Border Gateway Protocol (MBGP)	Implementing IPv6 Multicast	(26)11	12.3(4)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6 multicast: Explicit tracking of receivers	Implementing IPv6 Multicast	—	12.3(7)	12.4	(28)	—	(25)	(33)SRA	(33)SXH
IPv6 multicast: IPv6 bidirectional PIM	Implementing IPv6 Multicast	—	12.3(7)	12.4	(28)	—	(25)	(33)SRA	—
IPv6 multicast: MFIB display enhancements	Implementing IPv6 Multicast	—	12.3(7)	12.4	—	—	—	—	—
IPv6 multicast: IPv6 BSR	Implementing IPv6 Multicast	(28)	12.3(11)	12.4	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 multicast: IPv6 BSR bidirectional support	Implementing IPv6 Multicast	—	12.3(14)	12.4	—	—	—	—	—
IPv6 multicast: IPv6 BSR scoped-zone support	Implementing IPv6 Multicast	—	—	—	—	—	—	—	(18)SXE
IPv6 multicast: SSM mapping for MLDv1 SSM	Implementing IPv6 Multicast	—	12.4(2)	—	—	—	—	(33)SRA	(18)SXE
IPv6 multicast: IPv6 BSR—ability to configure RP mapping	Implementing IPv6 Multicast	—	12.4(2)	—	—	—	—	—	—
IPv6 multicast: MLD group limits	Implementing IPv6 Multicast	—	12.4(2)	—	—	—	—	—	—
IPv6 multicast: multicast user authentication and profile support	Implementing IPv6 Multicast	—	12.4(4)	—	—	—	—	—	—
IPv6 multicast: MLD snooping	Implementing IPv6 Multicast	—	—	—	—	(25)SED	—	(33)SRA	(18)SXE
IPv6 multicast: Address Group Range Support	Implementing IPv6 Multicast	—	—	—	—	—	—	—	(33)SXI
NAT Protocol Translation (NAT-PT)		—	12.2(13)	12.3	—	—	—	—	—
NAT-PT: support for DNS ALG	Implementing NAT Protocol Translation	—	12.2(13)	12.3	—	—	—	—	—
NAT-PT: support for overload (PAT)	Implementing NAT Protocol Translation	—	12.3(2)	12.4	—	—	—	—	—
NAT-PT: support for FTP ALG	Implementing NAT Protocol Translation	—	12.3(2)	12.4	—	—	—	—	—
NAT-PT: support for fragmentation	Implementing NAT Protocol Translation	—	12.3(2)	12.4	—	—	—	—	—
IPv6 Tunnel Services
IPv6 tunneling: automatic 6to4 tunnels	Implementing Tunneling for IPv6	(22)	12.2(2)	12.3	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 tunneling: automatic IPv4- compatible tunnels	Implementing Tunneling for IPv6	(22)	12.2(2)	12.3	(28)	—	(25)	(33)SRA	(18)SXE
IPv6 tunneling: manually configured IPv6 over IPv4 tunnels	Implementing Tunneling for IPv6	(23)2	12.2(2)	12.3	(28)	—	(25)	(33)SRA	(17a)SX1
IPv6 tunneling: IPv6 over IPv4 GRE tunnels	Implementing Tunneling for IPv6	(22)12	12.2(4)	12.3	(28)	—	—	(33)SRA	(17a)SX1
IPv6 tunneling: IPv6 over UTI using a tunnel line card13	Implementing Tunneling for IPv6	(23)2	—	—	—	—	—	—	—
IPv6 tunneling: ISATAP tunnel support	Implementing Tunneling for IPv6	—	12.2(15)	12.3	(28)SB	—	(25)	(33)SRA	(17a)SX1
IPv6 tunneling: IPv6 over IPv6 tunnels	Implementing Tunneling for IPv6	—	12.3(7)	12.4	—	—	—		—
IPv6 tunneling: IP over IPv6 GRE tunnels	Implementing Tunneling for IPv6	—	12.3(7)	12.4	—	—	—	—	—
IPv6 tunneling: IPv6 GRE tunnels in CLNS	Implementing Tunneling for IPv6	—	12.3(7)	12.4	(28)SB	—	—	(33)SRA	—
IPv6 QoS (Quality of Service)		(28)	12.2(13)	12.3	—	—	—	(33)SRA	(18)SXE
IPv6 QoS: MQC packet classification	Implementing QoS for IPv6	—	12.2(13)	12.3	—	—	—	(33)SRA	(18)SXE
IPv6 QoS: MQC traffic shaping	Implementing QoS for IPv6	(28)	12.2(13)	12.3	—	—	—	(33)SRA	(18)SXE
IPv6 QoS: MQC traffic policing	Implementing QoS for IPv6	(28)	12.2(13)	12.3	—	—	—	(33)SRA	(18)SXE
IPv6 QoS: MQC packet marking/re- marking	Implementing QoS for IPv6	(28)	12.2(13)	12.3	—	—	—	(33)SRA	(18)SXE
IPv6 QoS: queueing	Implementing QoS for IPv6	—	12.2(13)	12.3	—	—	—	(33)SRA	(18)SXE
IPv6 QoS: MQC weighted random early detection (WRED)-based drop	Implementing QoS for IPv6	(28)	12.2(13)	12.3	—	—	—	(33)SRA	(18)SXE
IPv6 High Availability
IPv6: Base protocols High Availability	Implementing IPv6 Addressing and Basic Connectivity	—	—	—	—	—	—	—	—
IPv6 routing: RIPng nonstop forwarding	Implementing RIP for IPv6	—	—	—	—	—	—	—	—
IPv6 routing: NSF and graceful restart for MP-BGP IPv6 address family	Implementing Multiprotocol BGP for IPv6	—	—	—	—	—	—	—	—
OSPFv3 graceful restart	Implementing OSPF for IPv6	—	—	—	—	—	—	—	—
IPv6 Voice
RTP/RTCP over IPv6	Implementing Voice over IPv6	—	12.4(22)	—	—	—	—	—	—
IPv6 Data Link Layer
IPv6 data link: ATM PVC and ATM LANE	Implementing IPv6 Addressing and Basic Connectivity	(22)14	12.2(2)	12.3	(28)	—	—	(33)SRA	—
IPv6 data link: Ethernet, Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	(25)SEA	—	(33)SRA	—
IPv6 data link: Frame Relay PVC	Implementing IPv6 Addressing and Basic Connectivity	(22)15	12.2(2)	12.3	(28)	—	—	(33)SRA	—
IPv6 data link: High-Level Data Link Control	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	—	—	(33)SRA	—
IPv6 data link: PPP service over packet over SONET, ISDN, and serial (synchronous and asynchronous) interfaces	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)16	—	—	(33)SRA	—
IPv6 data link: VLANs using IEEE 802.1Q encapsulation	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(18)SXE
IPv6 data link: VLANs using Cisco Inter-Switch Link (ISL)	Implementing IPv6 Addressing and Basic Connectivity	(22)	12.2(2)	12.3	(28)	(25)SEA	(25)	(33)SRA	(18)SXE
IPv6 data link: dynamic packet transport (DPT)	Implementing IPv6 Addressing and Basic Connectivity	(23)	—	—	—	—	—	—	—

1 A ping in the fast-path mode is not supported. The support rate is limited to 10 pings per second per interface. 2 In Cisco IOS Release 12.0(23)S, the Cisco 12000 series Internet router provides enhanced performance for IPv6 manually configured tunnels by processing traffic on the line card. 3 The Cisco 10720 Internet router is supported in Cisco IOS Release 12.0(26)S. 4 IPv6 extended access control lists and IPv6 provider edge routers over MPLS are implemented with IPv6 hardware acceleration on the Cisco 12000 series Internet router IP service engine (ISE) line cards in Cisco IOS routers in Cisco IOS Release 12.0(25)S and later releases. 5 The RIP for IPv6 feature was updated in Cisco IOS Release 12.2(13)T. 6 Enhancements were made to several multiprotocol BGP commands. 7 SNMP versions 1, 2, and 3 are supported over an IPv6 transport. 8 In Cisco IOS Release 12.0(32)S, the Dynamic Host Configuration Protocol (DHCP) for IPv6 prefix delegation is supported on shared port adaptors (SPAs) in the 10G Engine 5 SPA Interface Processor (SIP) on the Cisco 12000 series Internet router only for stateless address assignment. 9 This feature may not be useful without either the IPv6 over PPPoE or IPv6 over PPPoA features, and the IPv6 over PPPoE or IPv6 over PPPoA features are not supported in Cisco IOS Release 12.2(28)SB. 10 Support for this feature is provided in Cisco IOS Release 12.2(33)SCA (see Table 3). 11 Feature is supported on Cisco 12000 series Internet routers in Cisco IOS Release 12.0(26)S. 12 IPv6 over IPv4 GRE tunnels are not supported on the Cisco 12000 series Internet router. 13 Feature is supported on the Cisco 12000 series Internet router only. 14 Only ATM PVCs are supported on the Cisco IOS 2.0S software release train. ATM LANE is not supported. 15 Frame Relay PVCs are not supported by distributed Cisco Express Forwarding switching for IPv6 in the 12.0S Cisco IOS software train. In the Cisco 12000 series Internet routers, Frame Relay encapsulated IPv6 packets are process switched on the Route Processor. 16 In 12.2(28)SB, PPPoA, PPPoE, and PPP over a VLAN are not supported. PPP over a serial link is supported.

Supported IPv6 Feature

Cisco Platforms Supporting IPv6 Hardware Forwarding

Supported Platforms

Table 1 lists the Cisco platforms that have IPv6 hardware forwarding and the Cisco IOS software release trains that introduce the feature.

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Note Table 2 lists only the Cisco IOS software release that introduced support for a given feature in a given Cisco IOS software release train. Unless noted otherwise in Table 2, subsequent releases of that Cisco IOS software release train also support that feature.

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Table 2 Minimum Required Release for Cisco Platforms Supporting IPv6 Hardware Forwarding

Hardware and Feature	Cisco IOS Software Release
Cisco 12000 Series
IP ISE line card IPv6 forwarding	12.0(23)S
IP ISE line card extended ACLs	12.0(25)S
IP ISE line card IPv6 over MPLS (6PE)	12.0(25)S
IP ISE line card IPv6 Multicast assist	12.0(26)S
IP ISE line card IPv6 QoS	12.0(28)S
Engine 5 line card IPv6 hardware forwarding	12.0(31)S
IP Receive ACL for IPv6 traffic	12.0(32)S
Cisco 10000 Series
Cisco 10000 series Performance Routing Engine 2 (PRE-2)	12.2(28)SB
Cisco 10000 series PRE-3	12.2(31)SB
Cisco 10000 series 6PE support	12.2(31)SB
Cisco 10000 series PRE-4	12.2(33)SB
Cisco 10720 Series
PxF accelerated for IPv6 forwarding	12.0(26)S, 12.2(28)SB
PxF accelerated for IPv6 extended ACLs	12.0(26)S
PxF accelerated for IPv6 over MPLS (6PE)	12.0(26)S
PRE-2 hardware forwarding	12.2(28)SB
Cisco 7600 Series, Cisco Catalyst 6500, Cisco Catalyst 3700, and Cisco Catalyst 3500
IPv6: Express setup	12.2(35)SE
Cisco Catalyst 3560 series	12.2(25)SEA
Cisco Catalyst 3750 series	12.2(25)SEA
IPv6: IPv6 and IPv4 TCAM templates	12.2(25)SEA
IPv6: IPv6 neighbor discovery throttling	12.2(25)SEA
Cisco Catalyst 3560E series	12.2(35)SE2
Cisco Catalyst 3570E series	12.2(35)SE2
Cisco Catalyst 3560 series: IPv6 multicast hardware layer	12.2(25)SED
Supervisor Engines 720 and 720-3bxl	12.2(33)SRA
Route/switch processor 720 on Cisco 7600 series	12.2(33)SRB
Supervisor Engine 720 IPv6 forwarding	12.2(17a)SX1
Supervisor Engine 720 IPv6 extended ACLs	12.2(17a)SX1
Supervisor Engine 720 IPv6 over MPLS (6PE)	12.2(17b)SXA
Supervisor Engine 720 IPv6 multicast hardware forwarding	12.2(18)SXE
Supervisor Engine 720 IPv6 multicast RPR/RPR+ support	12.2(18)SXE
Supervisor Engine 720 IPv6 multicast hardware-assisted egress replication	12.2(18)SXE
Supervisor Engine 32/MSFC2A	12.2(18)SXF
Cisco ASR 1000 Series
ASR1000 series RP1	Cisco IOS XE Release 2.1

Additional 12.2S Release Trains

Several early-deployment Cisco IOS software Release 12.2S trains synchronize to the Cisco IOS software mainline Release 12.2S train. The following table lists information about the release trains on which IPv6 hardware is used.

Table 3 Minimum Required Release for IPv6 Hardware on Early-Deployment 12.2S Cisco IOS Software Release Trains

Early-Deployment Cisco IOS Software Release and Hardware	Release Description
12.2(28)SB and 12.2(33)SB on Cisco 10000 series	Not all features for Cisco IOS Release 12.2(28)SB or Cisco IOS Release 12.2(33)SB are supported on the Cisco 10000 series routers. For further information on Cisco IOS Release 12.2(28)SB or Cisco IOS Release 12.2(33)SB, see the release notes at the following URLs: http://www.cisco.com/en/US/docs/ios/12_2sb/release/notes/122SB.html
12.2(25)SEA on Cisco Catalyst 3560 and 3570 series	12.2(25)SEA supports a subset of the 12.2S IPv6 feature set. IPv6 multicast is not supported.
12.2(33)SRA on Cisco 7600 series	12.2(33)SRA includes all IPv6 features from Cisco IOS software releases 12.2S and 12.2SX.
12.2SX on Cisco Catalyst 6500	12.2(17)SX includes the entire Cisco IOS software Release 12.2(14)S feature set, plus OSPFv3.
12.2(17d)SXB on Cisco Catalyst 6500 Supervisor Engine 2/MSFC2	IPv6 support provided on 12.2(17)SXB for Cisco Catalyst 6500 Supervisor Engine 2/MSFC2.
12.2(18)SXE on Cisco Catalyst 6500 and Cisco 7600 series	12.2(18)SXE supports IPv6 multicast hardware forwarding.
12.2(18)SXF on Supervisor Engine 32/MSFC2A
12.2(35)SE2 on Cisco Catalyst 3560E and 3570E series
12.2(40)SE on Cisco Catalyst 2960	IPv6 support provided for MLD snooping.
12.2(33)SCA on UBR	Support is provided for DHCPv6 relay agent notification for prefix delegation.

Additional References

The following sections provide references related to Cisco IOS IPv6 features:

Related Documents

Related Topic	Document Title
IPv6 commands: complete command syntax, command mode, defaults, usage guidelines, and examples	Cisco IOS IPv6 Command Reference

RFCs

RFCs	Title
RFC 1886	DNS Extensions to Support IP version 6
RFC 1981	Path MTU Discovery for IP version 6
RFC 2080	RIPng for IPv6
RFC 2375	IPv6 Multicast Address Assignments
RFC 2401	Security Architecture for the Internet Protocol
RFC 2402	IP Authentication Header
RFC 2404	The Use of Hash Message Authentication Code Federal Information Processing Standard 180-1 within Encapsulating Security Payload and Authentication Header
RFC 2406	IP Encapsulating Security Payload (ESP)
RFC 2407	The Internet Security Domain of Interpretation for ISAKMP
RFC 2408	Internet Security Association and Key Management Protocol
RFC 2409	Internet Key Exchange (IKE)
RFC 2460	Internet Protocol, Version 6 (IPv6) Specification
RFC 2461	Neighbor Discovery for IP Version 6 (IPv6)
RFC 2462	IPv6 Stateless Address Autoconfiguration
RFC 2463	Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification
RFC 2464	Transmission of IPv6 Packets over Ethernet
RFC 2467	Transmission of IPv6 Packets over FDDI
RFC 2472	IP Version 6 over PPP
RFC 2474	Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers
RFC 2475	An Architecture for Differentiated Services Framework
RFC 2492	IPv6 over ATM
RFC 2545	Use of BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing
RFC 2590	Transmission of IPv6 Packets over Frame Relay Specification
RFC 2597	Assured Forwarding PHB
RFC 2598	An Expedited Forwarding PHB
RFC 2697	A Single Rate Three Color Marker
RFC 2698	A Two Rate Three Color Marker
RFC 2710	Multicast Listener Discovery (MLD) for IPv6
RFC 2711	IPv6 Router Alert Option
RFC 2740	OSPF for IPv6
RFC 2766	Network Address Translation-Protocol Translation (NAT-PT)
RFC 2858	Multiprotocol Extensions for BGP-4
RFC 2893	Transition Mechanisms for IPv6 Hosts and Routers
RFC 3056	Connection of IPv6 Domains via IPv4 Clouds
RFC 3068	An Anycast Prefix for 6to4 Relay Routers
RFC 3147	Generic Routing Encapsulation over CLNS
RFC 3162	RADIUS and IPv6
RFC 3315	Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
RFC 3319	Dynamic Host Configuration Protocol (DHCPv6) Options for Session Initiated Protocol (SIP) Servers
RFC 3392	Capabilities Advertisement with BGP-4
RFC 3484	Default Address Selection for Internet Protocol version 6 (IPv6)
RFC 3513	Internet Protocol Version 6 (IPv6) Addressing Architecture
RFC 3576	Change of Authorization
RFC 3587	IPv6 Global Unicast Address Format
RFC 3596	DNS Extensions to Support IP Version 6
RFC 3633	DHCP IPv6 Prefix Delegation
RFC 3646	DNS Configuration options for Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
RFC 3736	Stateless DHCP Service for IPv6
RFC 3775	Mobility Support in IPv6
RFC 3810	Multicast Listener Discovery Version 2 (MLDv2) for IPv6
RFC 3879	Deprecating Site Local Addresses
RFC 3954	Cisco Systems NetFlow Services Export Version 9
RFC 3956	Embedding the Rendezvous Point (RP) Address in an IPv6 Multicast Address
RFC 3963	Network Mobility (NEMO) Basic Support Protocol
RFC 4007	IPv6 Scoped Address Architecture
RFC 4087	IP Tunnel MIB
RFC 4109	Algorithms for Internet Key Exchange version 1 (IKEv1)
RFC 4191	Default Router Preferences and More-Specific Routes
RFC 4193	Unique Local IPv6 Unicast Addresses
RFC 4214	Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
RFC 4291	IP Version 6 Addressing Architecture
RFC 4292	IP Forwarding Table MIB
RFC 4293	Management Information Base for the Internet Protocol (IP)
RFC 4302	IP Authentication Header
RFC 4306	Internet Key Exchange (IKEv2) Protocol
RFC 4308	Cryptographic Suites for IPsec
RFC 4382	MPLS/BGP Layer 3 Virtual Private Network (VPN) Management Information Base
RFC 4443	Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification
RFC 4552	Authentication/Confidentiality for OSPFv3
RFC 4659	BGP-MPLS IP Virtual Private Network (VPN) Extension for IPv6 VPN
RFC 4724	Graceful Restart Mechanism for BGP
RFC 4798	Connecting IPv6 Islands over IPv4 MPLS Using IPv6 Provider Edge Routers (6PE)
RFC 5095	Deprecation of Type 0 Routing Headers in IPv6
RFC 5120	M-ISIS: Multi Topology (MT) Routing in Intermediate System to Intermediate Systems (IS-ISs)
RFC 5308	Routing IPv6 with IS-IS

The draft RFCs supported are as follows:

•draft-bonica-internet-icmp, ICMP Extensions for Multiprotocol Label Switching

•draft-ietf-pim-sm-v2-new, Protocol Independent Multicast - Sparse Mode PIM-SM: Protocol Specification (Revised), March 6, 2003

•draft-ietf-pim-sm-bsr-03.txt, Bootstrap Router (BSR) Mechanism for PIM Sparse Mode, February 25, 2003

•draft-suz-pim-upstream-detection, PIM Upstream Detection Among Multiple Addresses, February 2003

MIBs

MIBs	MIBs Link
•CISCO-CONFIG-COPY-MIB •CISCO-CONFIG-MAN-MIB •CISCO-DATA-COLLECTION-MIB •CISCO-FLASH-MIB •CISCO-IETF-IP-FORWARDING-MIB (not available as of Cisco IOS Release 12.2(33)SRC) •CISCO-IETF-IP-MIB (not available as of Cisco IOS Release 12.2(33)SRC) •CISCO-IP-FORWARD-MIB •CISCO-IP-MIB •CISCO-SNMP-TARGET-EXT-MIB •ENTITY-MIB •NOTIFICATION-LOG-MIB •SNMP-TARGET-MIB •TUNNEL-MIB	To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at the following URL: http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

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