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

Supported RFCs

MIBs

Related Documents

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, 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.

The Cisco IOS IPv6 Configuration Library, which includes this document, is located at the following website:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/hipv6_c/index.htm

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

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/hipv6_r/index.htm

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

•Supported RFCs

•Related Documents

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, 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.

Not all features for Cisco IOS Release 12.2(28)SB are supported on the Cisco 10000 series routers. For further information on Cisco IOS Release 12.2(28)SB, see the release notes at the following URL: http://www.cisco.com/univercd/cc/td/doc/product/software/ios122sb/122sbrln/122sbrln.htm

–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 series.

–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	12.2(SG) Release	12.2SR Release	12.2SX Release
IPv6		12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 address types: Unicast	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	—	12.2(33)SRA	12.2(17a)SX1
IPv6: ICMPv6	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB1	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6: IPv6 neighbor discovery	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6: IPv6 stateless autoconfiguration	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6: IPv6 MTU path discovery	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6: ping	Managing Cisco IOS Applications over IPv6	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6:	Implementing IPv6 Addressing and Basic Connectivity, Managing Cisco IOS Applications over IPv6	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6: ICMPv6 redirect	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(4)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6: neighbor discovery duplicate address detection	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(4)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6: IPv6 static cache entry for neighbor discovery	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(8)T	12.3	12.2(28)SB	12.2(25)SEA	—	12.2(33)SRA	12.2(17a)SX1
IPv6 address types: Anycast	Implementing IPv6 Addressing and Basic Connectivity	—	12.3(4)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6: NetFlow for IPv6 unicast traffic	Implementing NetFlow for IPv6	—	12.3(7)T	12.4	—	—	—	12.2(33)SRB	12.2(33) SXH
IPv6: Mobile IPv6 home agent	Implementing Mobile IPv6	—	12.3(14)T	12.4	—	—	—	—	—
IPv6: IPv6 default router preferences	Implementing IPv6 Addressing and Basic Connectivity	—	12.4(2)T	—	—	—	—	12.2(33)SRA	12.2(33) SXH
IPv6: IPv6 ACL extensions for Mobile IPv6	Implementing Mobile IPv6	—	12.4(2)T	—	—	—	—	12.2(33)SRB	—
IPv6: IP Receive ACL for IPv6 traffic	IP Receive ACL	12.0(32)S	—	—	—	—	—	—	—
IPv6: syslog over IPv6	Implementing IPv6 Addressing and Basic Connectivity	—	12.4(4)T	—	—	—	—	12.2(33)SRB	—
IPv6: IPv6 VPN over MPLS (6VPE)	Implementing IPv6 VPN over MPLS (6VPE)	—	—	—	—	—	—	12.2(33)SRB	—
IPv6: MPLS VPN 6VPE support over IP tunnels	Implementing IPv6 VPN over MPLS (6VPE)	—	—	—	—	—	—	12.2(33)SRB1	—
IPv6 Switching Services
IPv6 switching: automatic 6to4 tunnels	Implementing Tunneling for IPv6	12.0(22)S2	12.2(2)T	12.3	12.2(28)SB	—	—	12.2(33)SRA	12.2(17a)SX1
IPv6 switching: CEF/dCEF support	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(13)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 switching: CEFv6 switched configured IPv6 over IPv4 tunnels	Implementing Tunneling for IPv6	—	12.2(13)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 switching: provider edge router over MPLS (6PE)3 4	Implementing IPv6 over MPLS	12.0(22)S	12.2(15)T	12.3	12.2(31)SB	—	—	12.2(33)SRA	12.2(17b)SXA
IPv6 switching: CEFv6 switched ISATAP tunnels	Implementing Tunneling for IPv6	—	12.3(2)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 switching: CEFv6 switched automatic IPv4-compatible tunnels	Implementing Tunneling for IPv6	—	12.3(2)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 Routing
IPv6 routing: RIP for IPv6 (RIPng)	Implementing RIP for IPv6	12.0(22)S	12.2(2)T5	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 routing: static routing	Implementing Static Routes for IPv6	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 routing: route redistribution	Implementing IS-IS for IPv6, Implementing RIP for IPv6	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 routing: multiprotocol BGP extensions for IPv6	Implementing Multiprotocol BGP for IPv6	12.0(22)S	12.2(2)T6	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 routing: multiprotocol BGP link-local address peering	Implementing Multiprotocol BGP for IPv6	12.0(22)S	12.2(4)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 routing: IS-IS support for IPv6	Implementing IS-IS for IPv6	12.0(22)S	12.2(8)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 routing: IS-IS multitopology support for IPv6	Implementing IS-IS for IPv6	12.0(26)S	12.2(15)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 routing: OSPF for IPv6 (OSPFv3)	Implementing OSPF for IPv6	12.0(24)S	12.2(15)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 routing: OSPF for IPv6 authentication support with IPSec	Implementing OSPF for IPv6	—	12.3(4)T	12.4	—	—	—	—	—
IPv6 Routing: OSPF IPv6 (OSPFv3) IPSec ESP Encryption and Authentication	Implementing OSPF for IPv6	—	12.4(9)T	—	—	—	—	—	—
OSPFv3 dynamic interface cost support	Implementing OSPF for IPv6	—	12.4(15)T	—	—	—	—	—	—
IPv6 routing: IPv6 policy-based routing	Implementing Policy-Based Routing for IPv6	—	12.3(7)T	12.4	—	—	—	—	—
IPv6 routing: EIGRP support	Implementing EIGRP for IPv6	—	12.4(6)T	—	—	12.2(40)SE	—	12.2(33)SRB	—
IPv6 Services and Management
IPv6 services and management: AAAA DNS lookups over an IPv4 transport	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 services and management: standard access control lists	Implementing Traffic Filters and Firewalls for IPv6 Security	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SED	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 services and management: DNS lookups over an IPv6 transport	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(8)T	12.3	12.2(28)SB	12.2(25)SED	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 services and management: Secure Shell (SSH) support over IPv6	Managing Cisco IOS Applications over IPv6	12.0(22)S	12.2(8)T	12.3	12.2(28)SB	12.2(25)SEE	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 services and management: Cisco Discovery Protocol—IPv6 address family support for neighbor information	Implementing IPv6 Addressing and Basic Connectivity	—	12.2(8)T	12.3	12.2(28)SB	12.2(25)SEE	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 services and management: CISCO-IP-MIB support	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(15)T	12.3	12.2(28)SB	12.2(25)SEE	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 services and management: CISCO-IP-FOR WARDING- MIB support	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(15)T	12.3	12.2(28)SB	12.2(25)SEE	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 services and management: IP tunnel MIB support	Implementing IPv6 Addressing and Basic Connectivity	—	—	—	—	—	—	12.2(33)SRB	—
IPv6 services and management: extended access control lists4	Implementing Traffic Filters and Firewalls for IPv6 Security	12.0(23)S	12.2(13)T	12.3	12.2(28)SB	12.2(25)SED	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 services and management: generic prefix	Implementing IPv6 Addressing and Basic Connectivity	—	12.3(4)T	12.4	—	—	—	—	—
IPv6 services and management: SNMP over IPv67	Managing Cisco IOS Applications over IPv6	12.0(27)S	12.3(14)T	12.4	—	—	—	12.2(33)SRB	—
IPv6 services and management: IPv6 IOS Firewall	Implementing Traffic Filters and Firewalls for IPv6 Security	—	12.3(7)T	12.4	—	—	—	—	—
IPv6 services and management: IPv6 IOS Firewall FTP application support	Implementing Traffic Filters and Firewalls for IPv6 Security	—	12.3(11)T	—	—	—	—	—	—
IPv6 services and management: IPv6 IPSec VPN	Implementing IPSec in IPv6 Security	—	12.4(4)T	—	—	—	—	—	—
IPv6 services and management: HSRP for IPv6	Implementing IPv6 Addressing and Basic Connectivity	—	12.4(4)T	—	—	—	—	12.2(33)SRB	—
IPv6 services and management: FHRP - GLBP for IPv6	Implementing GLBP for IPv6	—	12.4(6)T	—	—	—	—	—	—
IPv6 Broadband Access
IPv6 access services: PPPoA	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)T	12.3	—	—	—	—	—
IPv6 access services: PPPoE	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)T	12.3	—	—	—	—	—
IPv6 access services: prefix pools	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)T	12.3	—	—	—	—	—
IPv6 access services: AAA support for Cisco VSA IPv6 attributes	Implementing ADSL and Deploying Dial Access for IPv6	—	12.2(13)T	12.3	—	—	—	—	—
IPv6 access services: remote bridged encapsulation	Implementing IPv6 Addressing and Basic Connectivity	—	12.3(4)T	12.4	—	—	—	—	—
IPv6 access services: AAA support for RFC 3162 IPv6 RADIUS attributes	Implementing ADSL and Deploying Dial Access for IPv6	—	12.3(4)T	12.4	—	—	—	—	—
IPv6 access services: stateless DHCPv6	Implementing DHCP for IPv6	12.0(32)S8	12.3(4)T	12.4	12.2(28)SB	—	—	—	—
IPv6 access services: DHCPv6 prefix delegation	Implementing DHCP for IPv6, Implementing ADSL and Deploying Dial Access for IPv6	12.0(32)S8	12.3(4)T	12.4	12.2(28)SB	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 access services: DHCP for IPv6 relay agent	Implementing DHCP for IPv6	—	12.3(11)T	12.4	12.2(28)SB	—	—	—	—
IPv6 access services: DHCPv6 prefix delegation via AAA	Implementing ADSL and Deploying Dial Access for IPv6	—	12.3(14)T	12.4	12.2(28)SB	—	—	—	—
IPv6 access services: DHCPv6 Server Stateless Auto Configuration	Implementing DHCP for IPv6	—	12.4(15)T	—	—	—	—	—	—
IPv6 access services: DHCPv6 Client Information Refresh Option	Implementing DHCP for IPv6	—	12.4(15)T	—	—	—	—	—	—
IPv6 Multicast		12.0(26)S9	12.3(2)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 multicast: Multicast Listener Discovery (MLD) protocol, versions 1 and 2	Implementing IPv6 Multicast	12.0(26)S9	12.3(2)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 multicast: PIM sparse mode (PIM-SM)	Implementing IPv6 Multicast	12.0(26)S9	12.3(2)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 multicast: PIM Source Specific Multicast (PIM-SSM)	Implementing IPv6 Multicast	12.0(26)S9	12.3(2)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 multicast: scope boundaries	Implementing IPv6 Multicast	12.0(26)S9	12.3(2)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 multicast: MLD access group	Implementing IPv6 Multicast	12.0(26)S9	12.3(4)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: PIM accept register	Implementing IPv6 Multicast	12.0(26)S9	12.3(4)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: PIM embedded RP support	Implementing IPv6 Multicast	12.0(26)S9	12.3(4)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: RPF flooding of bootstrap router (BSR) packets	Implementing IPv6 Multicast	12.0(26)S9	12.3(4)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: routable address hello option	Implementing IPv6 Multicast	12.0(26)S9	12.3(4)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: static multicast routing (mroute)	Implementing IPv6 Multicast	12.0(26)S9	12.3(4)T	12.4	12.2(28)SB	—	—	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: address family support for multiprotocol Border Gateway Protocol (MBGP)	Implementing IPv6 Multicast	12.0(26)S9	12.3(4)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: Explicit tracking of receivers	Implementing IPv6 Multicast	—	12.3(7)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(33) SXH
IPv6 multicast: IPv6 bidirectional PIM	Implementing IPv6 Multicast	—	12.3(7)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	—
IPv6 multicast: MFIB display enhancements	Implementing IPv6 Multicast	—	12.3(7)T	12.4	—	—	—	—	—
IPv6 multicast: IPv6 BSR	Implementing IPv6 Multicast	12.0(28)S	12.3(11)T	12.4	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 multicast: IPv6 BSR bidirectional support	Implementing IPv6 Multicast	—	12.3(14)T	12.4	—	—	—	—	—
IPv6 multicast: IPv6 BSR scoped-zone support	Implementing IPv6 Multicast	—	—	—	—	—	—	—	12.2(18) SXE
IPv6 multicast: SSM mapping for MLDv1 SSM	Implementing IPv6 Multicast	—	12.4(2)T	—	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 multicast: IPv6 BSR—ability to configure RP mapping	Implementing IPv6 Multicast	—	12.4(2)T	—	—	—	—	—	—
IPv6 multicast: MLD group limits	Implementing IPv6 Multicast	—	12.4(2)T	—	—	—	—	—	—
IPv6 multicast: multicast user authentication and profile support	Implementing IPv6 Multicast	—	12.4(4)T	—	—	—	—	—	—
IPv6 multicast: MLD snooping	Cisco IOS IPv6 Command Reference	—	—	—	—	12.2(25)SED	—	12.2(33)SRA	12.2(18) SXE
NAT Protocol Translation (NAT-PT)		—	12.2(13)T	12.3	—	—	—	—	—
NAT-PT: support for DNS ALG	Implementing NAT Protocol Translation	—	12.2(13)T	12.3	—	—	—	—	—
NAT-PT: support for overload	Implementing NAT Protocol Translation	—	12.3(2)T	12.4	—	—	—	—	—
NAT-PT: support for FTP ALG	Implementing NAT Protocol Translation	—	12.3(2)T	12.4	—	—	—	—	—
NAT-PT: support for fragmentation	Implementing NAT Protocol Translation	—	12.3(2)T	12.4	—	—	—	—	—
NAT-PT: support for translations in CEF switching	Implementing NAT Protocol Translation	—	12.3(14)T	12.4	—	—	—	—	—
IPv6 Tunnel Services
IPv6 tunneling: automatic 6to4 tunnels	Implementing Tunneling for IPv6	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 tunneling: automatic IPv4-compatible tunnels	Implementing Tunneling for IPv6	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(18) SXE
IPv6 tunneling: manually configured IPv6 over IPv4 tunnels	Implementing Tunneling for IPv6	12.0(23)S2	12.2(2)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 tunneling: IPv6 over IPv4 GRE tunnels	Implementing Tunneling for IPv6	12.0(22)S10	12.2(4)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 tunneling: IPv6 over UTI using a tunnel line card11	Implementing Tunneling for IPv6	12.0(23)S2	—	—	—	—	—	—	—
IPv6 tunneling: ISATAP tunnel support	Implementing Tunneling for IPv6	—	12.2(15)T	12.3	12.2(28)SB	—	12.2(25)SG	12.2(33)SRA	12.2(17a) SX1
IPv6 tunneling: IPv4 over IPv6 tunnels	Implementing Tunneling for IPv6	—	12.3(7)T	12.4	—	—	—	12.2(33)SRA	—
IPv6 tunneling: IP over IPv6 GRE tunnels	Implementing Tunneling for IPv6	—	12.3(7)T	12.4	—	—	—	12.2(33)SRA	—
IPv6 tunneling: IPv6 GRE tunnels in CLNS networks	Implementing Tunneling for IPv6	—	12.3(7)T	12.4	12.2(28)SB	—	—	12.2(33)SRA	—
IPv6 QoS (Quality of Service)		12.0(28)S	12.2(13)T	12.3	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 QoS: MQC packet classification	Implementing QoS for IPv6 for Cisco IOS Software	—	12.2(13)T	12.3	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 QoS: MQC traffic shaping	Implementing QoS for IPv6 for Cisco IOS Software	12.0(28)S	12.2(13)T	12.3	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 QoS: MQC traffic policing	Implementing QoS for IPv6 for Cisco IOS Software	12.0(28)S	12.2(13)T	12.3	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 QoS: MQC packet marking/re-marking	Implementing QoS for IPv6 for Cisco IOS Software	12.0(28)S	12.2(13)T	12.3	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 QoS: queueing	Implementing QoS for IPv6 for Cisco IOS Software	—	12.2(13)T	12.3	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 QoS: MQC weighted random early detection (WRED)-based drop	Implementing QoS for IPv6 for Cisco IOS Software	12.0(28)S	12.2(13)T	12.3	—	—	—	12.2(33)SRA	12.2(18) SXE
IPv6 Data Link Layer
IPv6 data link: ATM PVC and ATM LANE	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S12	12.2(2)T	12.3	12.2(28)SB	—	—	12.2(33)SRA	—
IPv6 data link: Ethernet, Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	12.2(25)SEA	—	12.2(33)SRA	—
IPv6 data link: Frame Relay PVC	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S13	12.2(2)T	12.3	12.2(28)SB	—	—	12.2(33)SRA
IPv6 data link: High-Level Data Link Control	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB	—	—	12.2(33)SRA	—
IPv6 data link: PPP service over packet over SONET, ISDN, and serial (synchronous and asynchronous) interfaces	Implementing IPv6 Addressing and Basic Connectivity	12.0(22)S	12.2(2)T	12.3	12.2(28)SB14	—	—	12.2(33)SRA	—
IPv6 data link: VLANs using IEEE 802.1Q encapsulation </