Cisco IOS IPv6 Feature Mapping

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This table lists the IPv6 features supported in the 12.xT, 12.xM, 12.2SE, 12.2SG, 12.2SR, 12.2SX, 12.2SY, 15.xT, 15.xM, 15.xSG, 15S, 15.0SY, and 3.xSG Cisco IOS software release trains. It also identifies the earliest release for each software release train in which the feature became available. Unless noted otherwise, subsequent releases of that Cisco IOS software release train also support that feature.

1 IPv6 Features
2 IPv6 Switching Services Features
3 IPv6 Routing Features
4 IPv6 Services and Management Features
5 IPv6 Broadband Access Features
6 DHCP Features for IPv6
7 IPv6 Multicast Features
8 NAT Protocol Translation (NAT-PT) Features
9 IPv6 Tunnel Services Features
10 IPv6 Quality of Service (QoS) Features
11 IPv6 Voice Features
12 IPv6 Data Link Layer Features
13 Additional Information

IPv6 Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
IPv6—Base Protocols High Availability	Implementing IPv6 Addressing and Basic Connectivity	—	—	—	—	12.2(33) SRE	—
IPv6—CNS Agents for IPv6	Implementing IPv6 for Network Management	12.4(20)	15.0	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
IPv6 Device Tracking	Implementing First Hop Security in IPv6	—	—	—	—	—	12.2(50)SY
Enhanced IPv6 Neighbor Discovery Cache Management	Implementing IPv6 Addressing and Basic Connectivity	—	—	—	—	—	12.2(33)SXI7
IPv6—Full Selective Packet Discard Support	Implementing Selective Packet Discard in IPv6	15.1(3)	—	—	—	—	—
IPv6—HTTP(S) IPv6 Support (Infrastructure)	Implementing IPv6 for Network Management	12.4(20)	—	12.2(44)SE	12.2(44)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
IPv6—ICMP Rate Limiting	Implementing IPv6 Addressing and Basic Connectivity	12.2(8)	12.3	12.2(25)SE	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—ICMPv6	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	12.2(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—ICMPv6 Redirect	Implementing IPv6 Addressing and Basic Connectivity	12.2(4)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—IPv6 ICMP RFC 4443	Implementing IPv6 Addressing and Basic Connectivity	12.4(9)T	—	12.2(52)	12.2(50)SG 3.2.0SG 15.0(2)SG	—	12.2(33)SXI
IPv6—IP SLAs for IPv6	Implementing IPv6 for Network Management	12.4(20)	15.0	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
IPv6—IPv6 ACL Extensions for Mobile IPv6	Implementing Mobile IPv6	12.4(2)	—	—	—	12.2(33)SRB	12.2(33)SXI
IPv6—IPv6 Default Router Preferences	Implementing IPv6 Addressing and Basic Connectivity	12.4(2)	15.0	(46)	12.2(46)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6—IPv6 for Config Logger	Implementing IPv6 for Network Management	12.4(20)	15.0	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
IPv6—IPv6 MTU Path Discovery	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—IPv6 Neighbor Discovery	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—IPv6 NETCONF Support	Implementing IPv6 for Network Management	12.4(20)	15.0	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
IPv6—IPv6 Stateless Autoconfiguration	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—IPv6 Stateless Address Autoconfiguration RFC 4862	Implementing IPv6 Addressing and Basic Connectivity	12.4(9)T	—	12.2(52)	12.2(50)SG 3.2.0SG 15.0(2)SG	—	12.2(33)SXI
IPv6—IPv6 Static Cache Entry for Neighbor Discovery	Implementing IPv6 Addressing and Basic Connectivity	12.2(8)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—Per- Interface Neighbor Discovery Cache Limit	Implementing IPv6 Addressing and Basic Connectivity	15.1(3)	—	—	—	—	—
IPv6—IPv6 Support for TCL	Implementing IPv6 for Network Management	12.4(20)	15.0	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
IPv6—IPv6 Support in SOAP	Implementing IPv6 for Network Management	12.4(20)	15.0	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
TACACS over IPv6	Implementing ADSL and Deploying Dial Access for IPv6	15.2(1)	—	(58)	—	15.1(1)S	12.2(33)SXJ
IPv6—IPv6 VPN over MPLS	Implementing IPv6 VPN over MPLS	12.4(20)	15.0	—	—	12.2(33)SRB	12.2(33)SXI
IPv6—Mobile IP—Mobile v6 —Basic NEMO	Implementing Mobile IPv6	12.4(20)	15.0	—	—	—	—
IPv6—Mobile IPv6 Home Agent	Implementing Mobile IPv6	12.3(14)	12.4	—	—	—	—
IPv6—MPLS VPN 6VPE Support over IP Tunnels	Implementing IPv6 VPN over MPLS	—	—	—	—	12.2(33)SRB1	12.2(33)SXI
BGP IPv6 PIC Edge for IP/MPLS	Implementing IPv6 VPN over MPLS	—	—	—	—	15.1(2)S	—
BGP IPv6 Client for Single-Hop BFD	Configuring BGP Neighbor Session Options	—	—	—	—	15.1(2)S	—
IPv6—Neighbor Discovery Duplicate Address Detection	Implementing IPv6 Addressing and Basic Connectivity	12.2(4)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 ND Inspection	Implementing First Hop Security in IPv6	—	—	—	—	—	12.2(50)SY
IPv6—NetFlow—NetFlow v9 Replaces IPv6 NetFlow	NetFlow v9 for IPv6	12.4(20)	15.0	—	—	—	—
IPv6—NetFlow for IPv6 Unicast Traffic	NetFlow v9 for IPv6	12.3(7)	12.4	—	—	12.2(33)SRB	12.2(33)SXH
IPv6—no ipv6 source-route command	Cisco IOS IPv6 Command Reference	12.3(4)	12.4	—	—	12.2(33)SRB1	—
IPv6—Ping	Implementing IPv6 for Network Management	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—syslog over IPv6	Implementing IPv6 for Network Management	12.4(4)	15.0	(44)	12.2(44)SG 3.2.0SG 15.0(2)SG	12.2(33)SRB	12.2(33)SXI
IPv6—Telnet, DNS, TFTP Client, Traceroute	Implementing IPv6 Addressing and Basic Connectivity, Implementing IPv6 for Network Management	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6—uRPF	Implementing IPv6 Addressing and Basic Connectivity	—	—	—	—	—	12.2(50)SY
IPv6 Address Types— Anycast	Implementing IPv6 Addressing and Basic Connectivity	12.3(4)	12.4	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Address Types—Unicast	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	—	12.2(33)SRA	12.2(17a)SX1
IPv6 PACL Support	Implementing First Hop Security in IPv6	—	—	(46)	12.2(54)SG 3.2.0SG 15.0(2)SG	—	12.2(33)SXI4
IPv6 RA Guard	Implementing First Hop Security in IPv6	—	—	—	12.2(54)SG 3.2.0SG 15.0(2)SG	—	12.2(33)SXI4
IPv6 Selective Packet Discard	Implementing Selective Packet Discard in IPv6	—	—	—	—	12.2(33)SRC	12.2(33)SXH
IPv6 Support on BVI Interfaces	Implementing IPv6 Addressing and Basic Connectivity	15.1(2)	—	—	—	—	—
TFTP IPv6 Support	Implementing IPv6 for Network Management	15.2(1)	—	—	—	15.1(3)S	—

IPv6 Switching Services Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
CEFv6 Switched Configured IPv6 over IPv4 Tunnels	Implementing Tunneling for IPv6	15.1(3)	—	—	—	—	—
CEFv6 Switched Configured IPv6 over IPv6 GRE Tunnels	Implementing Tunneling for IPv6	15.1(3)	—	—	—	—	—
IPv6 Switching—CEFv6 Switched Automatic IPv4- Compatible Tunnels	Implementing Tunneling for IPv6	12.3(2)	12.4	—	—	12.2(33)SRA	12.2(17a)SX1
IPv6 Switching—CEFv6 Switched Configured IPv6 over IPv4 Tunnels	Implementing Tunneling for IPv6	12.2(13)	12.4	—	—	12.2(33)SRA	12.2(18)SXE
IPv6 Switching—CEFv6 Switched ISATAP	Implementing Tunneling for IPv6	12.3(2)	12.4	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Switching—Cisco Express Forwarding/Distributed Cisco Express Forwarding Support	Implementing IPv6 Addressing and Basic Connectivity	12.2(13)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Switching—Provider Edge Router over MPLS (6PE)^[1] ^[2]	Implementing IPv6 over MPLS	12.2(15)	12.3	—	—	12.2(33)SRA	12.2(17b)SXA

IPv6 Routing Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
BFD IPv6 Encapsulation Support	Implementing Bidirectional Forwarding Detection for IPv6	15.1(2)	—	—	—	12.2(33)SRE	15.0(1)SY
EIGRP IPv6 VRF Lite	Implementing EIGRP for IPv6	—	15.1(4)	—	—	15.1(1)S	15.0(1)SY1
IPv6 Routing—EIGRP Support	Implementing EIGRP for IPv6	12.4(6)	—	(40)	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRB	12.2(33)SXI
IPv6 Routing—IPv6 Policy-Based Routing	Implementing Policy-Based Routing for IPv6	12.3(7)	12.4	—	—	15.1(1)S	12.2(33)SXI4
IPv6 Routing—IS-IS Multitopology Support for IPv6	Implementing IS-IS for IPv6	12.2(15)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Routing—IS-IS Support for IPv6	Implementing IS-IS for IPv6	12.2(8)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Routing—IS-IS Local RIB	Implementing IS-IS for IPv6	12.3(4)T	12.4	—	—	12.2(33)SRA	12.2(33)SXH
IPv6 Routing— Multiprotocol BGP Extensions for IPv6	Implementing Multiprotocol BGP for IPv6	12.2(2)^[3]	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Routing— Multiprotocol BGP Link-Local Address Peering	Implementing Multiprotocol BGP for IPv6	12.2(4)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Routing—NSF and Graceful Restart for MP-BGP IPv6 Address Family	Implementing Multiprotocol BGP for IPv6	—	—	—	—	12.2(33)SRE	15.0(1)SY
IPv6 Routing—OSPFv3 Fast Convergence - LSA and SPF Throttling	Implementing OSPFv3	—	15.0(1)	—	—	12.2(33)SRC	15.0(1)SY
IPv6 Routing— OSPF for IPv6 (OSPFv3)	Implementing OSPFv3	12.2(15)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Routing—OSPF for IPv6 Authentication Support with IPsec	Implementing OSPFv3	12.3(4)	12.4	—	—	—	15.0(1)SY1
IPv6 Routing—OSPF IPv6 (OSPFv3) IPSec ESP Encryption and Authentication	Implementing OSPFv3	12.4(9)	15.0	—	—	—	15.0(1)SY1
IPv6 Routing—RIP for IPv6 (RIPng)	Implementing RIP for IPv6	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Routing—RIPng Nonstop Forwarding	Implementing RIP for IPv6	—	—	—	—	12.2(33)SRE	15.0(1)SY
IPv6 Routing—Route Redistribution	Implementing IS-IS for IPv6, Implementing RIP for IPv6	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Routing—Static Routing	Implementing Static Routes for IPv6	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
OSPFv3 Address Families	Implementing OSPFv3	15.2(1)	—	—	—	15.1(3)S	—
OSPFv3 Dynamic Interface Cost Support	Implementing OSPFv3	12.4(15)	15.0	—	—	—	—
OSPFv3 External Path Preference Option	Implementing OSPFv3	—	—	—	—	15.1(3)S	—
OSPFv3 for BFD	Implementing OSPFv3, Implementing Bidirectional Forwarding Detection for IPv6	15.1(2)	—	—	—	12.2(33)SRE	15.0(1)SY
OSPFv3 Graceful Restart	Implementing OSPFv3	—	15.0(1)M	(58)	—	12.2(33)SRE	15.0(1)SY
OSPFv3 Manet Extensions	OSPFv3 Extensions for Mobile Ad Hoc Networks	15.2(1)	—	—	—	—	—
OSPFv3 Max-Metric Router LSA	Implementing OSPFv3	—	—	—	—	15.1(3)S	—
Static Route Support for BFD over IPv6	Implementing Bidirectional Forwarding Detection for IPv6	15.1(2)	—	—	—	—	15.0(1)SY1
VRF Lite Support for IPv6	Implementing Multiprotocol BGP for IPv6	—	—	(58)	—	—	—

IPv6 Services and Management Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
ACL - Hardware and Software Counters Granularity for IPv4 and IPv6 ACL Statistics	Implementing Traffic Filters and Firewalls for IPv6 Security	—	—	—	—	—	12.2(50)SY
IPsec IPv6 Phase 2 Support	Implementing IPSec in IPv6 Security	12.4(4)	15.0	—	—	—	—
IPv6 Secure Neighbor Discovery (SeND)	Implementing First Hop Security in IPv6	12.4(24)	15.0	—	—	—	—
IPv6 Services—AAAA DNS Lookups over an IPv4 Transport	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(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	(25)SEE	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Services—CISCO-IP-FORWARDING-MIB Support	Implementing IPv6 for Network Management	12.2(15)	12.3	(25)SEE	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Services—CISCO-IP-MIB Support	Implementing IPv6 for Network Management	12.2(15)	12.3	(25)SEE	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Services—DNS Lookups over an IPv6 Transport	Implementing IPv6 Addressing and Basic Connectivity	12.2(8)	12.3	(25)SED	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRE2	12.2(17a)SX1
IPv6 Services—Extended Access Control Lists^[2]	Implementing Traffic Filters and Firewalls for IPv6 Security	12.2(13)	12.3	(25)SED	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Services—FHRP - GLBP for IPv6	Configuring First Hop Redundancy Protocols in IPv6	12.4(6)	15.0	(58)	—	—	12.2(33)SXI
IPv6 Services—Generic Prefix	Implementing IPv6 Addressing and Basic Connectivity	12.3(4)	12.4	—	—	—	—
IPv6 Services—HSRP for IPv6	Configuring First Hop Redundancy Protocols in IPv6	12.4(4)	15.0	(46)	12.2(52)SG 3.2.0SG 15.0(2)SG	12.2(33)SRB	12.2(33)SXI
HSRP—Global IPv6 Address	Configuring First Hop Redundancy Protocols in IPv6	—	—	—	—	—	12.2(33)SXI4
SSO - HSRP	Configuring First Hop Redundancy Protocols in IPv6	—	—	—	12.2(52)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
ISSU - HSRP	Configuring First Hop Redundancy Protocols in IPv6	—	—	—	12.2(52)SG 3.2.0SG 15.0(2)SG	—	12.2(33)SXI
IPv6 Services—IOS Zone-Based Firewall	Implementing Traffic Filters and Firewalls for IPv6 Security	15.1(2)	—	—	—	—	—
IPv6 Services—IPv6 ACL Extensions for IPsec Authentication Header	Implementing Traffic Filters and Firewalls for IPv6 Security	12.4(20)	15.0	—	—	—	—
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)	15.0	—	—	—	—
IPv6 Services—IPv6 over DMVPN	Implementing Dynamic Multipoint VPN over IPv6	12.4(20)	15.0	—	—	—	—
IPv6 Transport for DMVPN	Implementing Dynamic Multipoint VPN over IPv6	15.2(1)	—	—	—	—	—
IPv6 Services—RFC 4293 IP-MIB (IPv6 Only) and RFC 4292 IP-FORWARD-MIB (IPv6 Only)	Implementing IPv6 for Network Management	15.1(3)	—	(58)	12.2(54)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(50)SY
IPv6 Services—Secure Shell (SSH) Support over IPv6	Implementing IPv6 for Network Management	12.2(8)	12.3	(25)SEE	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Services—SNMP over IPv6^[5]	Implementing IPv6 for Network Management	12.3(14)	12.4	(44)	12.2(44)SG 3.2.0SG 15.0(2)SG	12.2(33)SRB	12.2(33)SXI
IPv6 Services—Standard Access Control Lists	Implementing Traffic Filters and Firewalls for IPv6 Security	12.2(2)	12.3	(25)SED	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IKEv2 Headend Support for Remote Access Clients	Configuring Internet Key Exchange VersionÂ 2 and FlexVPN	15.2(1)	—	—	—	—	—
NTPv4	Implementing NTPv4 in IPv6	12.4(20)	—	12.2(58)SE	—	15.1(2)S	12.2(33)SXJ
SNMPv3 - 3DES and AES Encryption Support	Implementing IPv6 for Network Management	12.4(2)	15.0	(52)	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRB	12.2(33)SXI

IPv6 Broadband Access Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
Broadband IPv6 Counter Support at LNS	Implementing ADSL and Deploying Dial Access for IPv6	12.2(13)	12.3	—	—	12.2(33)SRC	—
IPv6 Access Services— AAA Support for Cisco VSA IPv6 Attributes	Implementing ADSL and Deploying Dial Access for IPv6	12.2(13)	12.3	—	—	12.2(33)SRC^[6]	—
IPv6 Access Services— AAA Support for RFC 3162 IPv6 RADIUS Attributes	Implementing ADSL and Deploying Dial Access for IPv6	12.3(4)	12.4	(58)	—	12.2(33)SRC^[6]	—
IPv6 Access Services—PPPoA	Implementing ADSL and Deploying Dial Access for IPv6	12.2(13)	12.3	—	—	12.2(33)SRC^[6]	—
IPv6 Access Services—PPPoE	Implementing ADSL and Deploying Dial Access for IPv6	12.2(13)	12.3	—	—	12.2(33)SRC^[6]	—
IPv6 Access Services—Prefix Pools	Implementing ADSL and Deploying Dial Access for IPv6	12.2(13)	12.3	—	—	12.2(33)SRC^[6]	—
IPv6 Access Services—RBE	Implementing IPv6 Addressing and Basic Connectivity	12.3(4)	12.4	—	—	12.2(33)SRC^[6]	—
RADIUS over IPv6	Implementing ADSL and Deploying Dial Access for IPv6	15.2(1)	—	(58)	—	—	—

DHCP Features for IPv6

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
DHCP—DHCPv6 Individual Address Assignment	Implementing DHCP for IPv6	12.4(24)	—	(46)	—	—	—
DHCP—DHCPv6 Relay SSO/ISSU	Implementing DHCP for IPv6	—	—	—	—	12.2(33)SRE	—
DHCPv6 Bulk Lease Query	Implementing DHCP for IPv6	—	—	(58)	—	15.1(1)S	—
DHCPv6 Relay - Source Configuration	Implementing DHCP for IPv6	—	—	(58)	—	12.2(33)SRE	—
IPv6 Access Services—DHCP for IPv6 Relay Agent	Implementing DHCP for IPv6	12.3(11)	12.4	(46)	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(33)SXI
IPv6 Access Services—DHCPv6 Client Information Refresh Option	Implementing DHCP for IPv6	12.4(15)	15.0	—	—	—	—
IPv6 Access Services—DHCPv6 Ethernet Remote ID Option	Implementing DHCP for IPv6	—	—	(46)	12.2(52)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(33)SXI
IPv6 Access Services—DHCPv6 Prefix Delegation	Implementing DHCP for IPv6, Implementing ADSL and Deploying Dial Access for IPv6	12.3(4)	12.4	—	—	12.2(33)SRA	12.2(18)SXE
IPv6 Access Services—DHCPv6 Prefix Delegation via AAA	Implementing ADSL and Deploying Dial Access for IPv6	12.3(14)	12.4	—	—	—	—
IPv6 Access Services—DHCPv6 Relay Agent Notification for Prefix Delegation^[7]	Implementing DHCP for IPv6	—	—	(46)	12.2(52)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(33)SXI
IPv6 Access Services—DHCPv6 Relay - Reload Persistent Interface ID Option	Implementing DHCP for IPv6	—	—	(46)	12.2(52)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	12.2(33)SXI
IPv6 Access Services—DHCPv6 Server Stateless Auto Configuration	Implementing DHCP for IPv6	12.4(15)	—	(46)	12.2(52)SG 3.2.0SG 15.0(2)SG	12.2(33)SRC	—
IPv6 Access Services—Stateless DHCPv6	Implementing DHCP for IPv6	12.3(4)	12.4	—	—	12.2(33)SRA	12.2(18)SXE
DHCPv6 Server - MPLS VPN Support	Implementing DHCP for IPv6	—	—	—	—	15.1(2)S	—
DHCPv6 Relay - MPLS VPN Support	Implementing DHCP for IPv6	—	—	—	—	15.1(2)S	—
DHCPv6 Server-Relay-Client Support in a VRF Lite Environment	Implementing DHCP for IPv6	—	—	(58)	—	—	—

IPv6 Multicast Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
IPv6 Multicast—Address Family Support for Multiprotocol Border Gateway Protocol (MBGP)	Implementing IPv6 Multicast	12.3(4)	12.4	—	—	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast—Address Group Range Support	Implementing IPv6 Multicast	—	15.0(1)M	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRE	12.2(33)SXI
IPv6 Multicast—Bandwidth-Based Call Admission Control (CAC)	Implementing IPv6 Multicast	—	—	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRE	—
IPv6 Multicast—Explicit Tracking of Receivers	Implementing IPv6 Multicast	12.3(7)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast—IPv6 Bidirectional PIM	Implementing IPv6 Multicast	12.3(7)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	—
IPv6 Multicast—IPv6 BSR	Implementing IPv6 Multicast	12.3(11)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Multicast—IPv6 BSR—Ability to Configure RP Mapping	Implementing IPv6 Multicast	12.4(2)	—	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRE	12.2(50)SY
IPv6 Multicast—IPv6 BSR Bidirectional Support	Implementing IPv6 Multicast	12.3(14)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRE	—
IPv6 Multicast—IPv6 BSR Scoped-Zone Support	Implementing IPv6 Multicast	12.3(14)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	—	—
IPv6 Multicast—MFIB Display Enhancements	Implementing IPv6 Multicast	12.3(7)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	—	—
IPv6 Multicast—Multicast Listener Discovery (MLD) Protocol, versions 1 and 2	Implementing IPv6 Multicast	12.3(2)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Multicast—MLD Access Group	Implementing IPv6 Multicast	12.3(4)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast—MLD Group Limits	Implementing IPv6 Multicast	12.4(2)	—	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRE	12.2(50)SY
IPv6 Multicast—MLD Proxy	Implementing IPv6 Multicast	15.1(2)	—	—	—	—	—
IPv6 Multicast—MLD Snooping	Implementing IPv6 Multicast	—	—	(25)SED	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRB	12.2(18)SXE
IPv6 Multicast—Multicast User Authentication and Profile Support	Implementing IPv6 Multicast	12.4(4)	—	—	12.2(40)SG 3.2.0SG 15.0(2)SG	—	—
IPv6 Multicast—PIM Accept Register	Implementing IPv6 Multicast	12.3(4)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast—PIM Source Specific Multicast (PIM-SSM)	Implementing IPv6 Multicast	12.3(2)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Multicast—PIM Sparse Mode (PIM-SM)	Implementing IPv6 Multicast	12.3(2)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Multicast—Scope Boundaries	Implementing IPv6 Multicast	12.3(2)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Multicast—PIM Embedded RP Support	Implementing IPv6 Multicast	12.3(4)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast—Routable Address Hello Option	Implementing IPv6 Multicast	12.3(4)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast—RPF Flooding of Bootstrap Router (BSR) Packets	Implementing IPv6 Multicast	12.3(4)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast—SSM Mapping for MLDv1 SSM	Implementing IPv6 Multicast	12.4(2)	—	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Multicast—Static Multicast Routing (mroute)	Implementing IPv6 Multicast	12.3(4)	12.4	—	12.2(40)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(33)SXH
IPv6 Multicast VRF Lite	Implementing IPv6 Multicast	—	15.1(4)M	—	—	—	—
ISSU - IPv6 Multicast	Implementing IPv6 Multicast	—	—	—	—	—	15.0(1)SY
NSF/SSO—IPv6 Multicast	Implementing IPv6 Multicast	—	—	—	—	12.2(33)SRE	15.0(1)SY
PIMv6: Anycast RP Solution	PIMv6: Anycast RP Solution	—	—	—	—	15.1(3)S	—

NAT Protocol Translation (NAT-PT) Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
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 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	—	—	—	—
NAT-PT—Support for Overload (PAT)	Implementing NAT Protocol Translation	12.3(2)	12.4	—	—	—	—

IPv6 Tunnel Services Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
IPv6 Rapid Deployment	Implementing Tunneling for IPv6	15.1(3)	—	—	—	—	—
IPv6 Tunneling—Automatic 6to4 Tunnels	Implementing Tunneling for IPv6	12.2(2)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Tunneling—Automatic IPv4- Compatible Tunnels	Implementing Tunneling for IPv6	12.2(2)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Tunneling—CEF Switched Automatic 6to4 Tunnels	Implementing Tunneling for IPv6	12.3(2)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Tunneling—CLNS Support for GRE IPv6 and IPv4 Tunnels	Implementing Tunneling for IPv6	12.3(7)	12.4	—	—	12.2(33)SRA	12.2(33)SXH
IPv6 Tunneling—IP over IPv6 GRE Tunnels	Implementing Tunneling for IPv6	12.3(7)	12.4	—	—	—	—
IPv6 Tunneling—IPv6 over IPv4 GRE Tunnels	Implementing Tunneling for IPv6	12.2(4)	12.3	—	—	12.2(33)SRA	12.2(17a)SX1
IPv6 Tunneling—IPv6 over IPv6 Tunnels	Implementing Tunneling for IPv6	12.3(7)	12.4	—	—		—
IPv6 Tunneling—IPv6 over UTI Using a Tunnel Line Card^[8]	Implementing Tunneling for IPv6	—	—	—	—	—	—
IPv6 Tunneling—ISATAP Tunnel Support	Implementing Tunneling for IPv6	12.2(15)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
IPv6 Tunneling—Manually Configured IPv6 over IPv4 Tunnels	Implementing Tunneling for IPv6	12.2(2)	12.3	—	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(17a)SX1
mGRE Tunnel support over IPv6	Implementing Tunneling for IPv6	15.2(1)	—	—	—	—	—

IPv6 Quality of Service (QoS) Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Releas
IPv6—QoS Trust	Configuring QoS	—	—	(52)	12.2(50)SG 3.2.0SG 15.0(2)SG	—	—
IPv6 QoS—MQC Packet Classification	Implementing QoS for IPv6	12.2(13)	12.3	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 QoS—MQC Packet Marking/Re- Marking	Implementing QoS for IPv6	12.2(13)	12.3	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 QoS—MQC Traffic Policing	Implementing QoS for IPv6	12.2(13)	12.3	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 QoS—MQC Traffic Shaping	Implementing QoS for IPv6	12.2(13)	12.3	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 QoS—MQC Weighted Random Early Detection (WRED)-Based Drop	Implementing QoS for IPv6	12.2(13)	12.3	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 QoS—Queueing	Implementing QoS for IPv6	12.2(13)	12.3	—	12.2(50)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Support for NBAR		15.2(2)	—	—	—	—	—
NBAR IPv6 Transition Mechanism Detection		15.1(3)	—	—	—	—	—

IPv6 Voice Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Releas
CUBE RTCP Voice Pass-Through for IPv6		15.2(1)	—	—	—	—	—
RTP/RTCP Over IPv6	Implementing Voice over IPv6	12.4(22)	—	—	—	—	—
T.38 Fax Support on CUBE for IPv6		15.2(1)	—	—	—	—	—

IPv6 Data Link Layer Features

Feature	Where Documented	12.xT/ 15.xT Release	12.xM/15.xM Release	12.2SE Release	12.2SG, 15.xSG, and 3.xSG Release	12.2SR/ 15S Release	12.2SX/ 12.2SY/ 15.0SY Release
IPv6 Data Link— ATM PVC and ATM LANE	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	—	—	12.2(33)SRA	—
IPv6 Data Link—Dynamic Packet Transport (DPT)	Implementing IPv6 Addressing and Basic Connectivity	—	—	—	—	—	—
IPv6 Data Link—Ethernet, Fast Ethernet, Gigabit Ethernet, and 10-Gigabit Ethernet	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	—
IPv6 Data Link—Frame Relay PVC	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	—	—	12.2(33)SRA	—
IPv6 Data Link—High-Level Data Link Control	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	—	—	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	12.2(2)	12.3	—	—	12.2(33)SRA	—
IPv6 Data Link—VLANs Using Cisco Inter-Switch Link (ISL)	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE
IPv6 Data Link—VLANs Using IEEE 802.1Q Encapsulation	Implementing IPv6 Addressing and Basic Connectivity	12.2(2)	12.3	(25)SEA	12.2(25)SG 3.2.0SG 15.0(2)SG	12.2(33)SRA	12.2(18)SXE

^[1]The Cisco 10720 Internet router is supported in Cisco IOS Release 12.0(26)S.

^[2]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.

^[3]Enhancements were made to several multiprotocol BGP commands.

^[4]The RIP for IPv6 feature was updated in Cisco IOS Release 12.2(13)T.

^[5]SNMP versions 1, 2, and 3 are supported over an IPv6 transport.

^[6]IPv6 Broadband Access features are on Cisco IOS 7200 series routers only in the 12.2(33)SRC release.

^[7]Support for this feature is provided in Cisco IOS Release 12.2(33)SCA (see Table 3).

^[8]Feature is supported on the Cisco 12000 series Internet router only.

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