IPv6--Base Protocols High Availability |
Cisco IOS XE Release 2.1 |
IPv6 Neighbor Discovery supports SSO. |
IPv6--ICMPv6 |
Cisco IOS XE Release 2.1 |
ICMP for IPv6 generates error messages, such as ICMP destination unreachable messages, and informational messages, such as ICMP echo request and reply messages. Additionally, ICMP packets in IPv6 are used in the IPv6 Neighbor Discovery process, path MTU discovery, and the MLD protocol for IPv6. |
IPv6--ICMPv6 Redirect |
Cisco IOS XE Release 2.1 |
A value of 137 in the Type field of the ICMP packet header identifies an IPv6 neighbor redirect message. Routers send neighbor redirect messages to inform hosts of better first-hop nodes on the path to a destination. |
IPv6--ICMP Rate Limiting |
Cisco IOS XE Release 2.1 |
The IPv6 ICMP rate limiting feature implements a token bucket algorithm for limiting the rate at which IPv6 ICMP error messages are sent out on the network. |
IPv6--IPv6 Default Router Preferences |
Cisco IOS XE Release 2.1 |
The DRP extension provides a coarse preference metric (low, medium, or high) for default routers. |
IPv6--IPv6 MTU Path Discovery |
Cisco IOS XE Release 2.1 |
Path MTU discovery in IPv6 allows a host to dynamically discover and adjust to differences in the MTU size of every link along a given data path. |
IPv6--IPv6 Neighbor Discovery |
Cisco IOS XE Release 2.1 |
The IPv6 Neighbor Discovery process uses ICMP messages and solicited-node multicast addresses to determine the link-layer address of a neighbor on the same network (local link), verify the reachability of a neighbor, and track neighboring routers. |
IPv6--IPv6 Neighbor Discovery Duplicate Address Detection |
Cisco IOS XE Release 2.1 |
IPv6 Neighbor Discovery duplicate address detection is performed first on a new, link-local IPv6 address before the address is assigned to an interface (the new address remains in a tentative state while duplicate address detection is performed). |
IPv6--IPv6 Stateless Autoconfiguration |
Cisco IOS XE Release 2.1 |
The IPv6 stateless autoconfiguration feature can be used to manage link, subnet, and site addressing changes. |
IPv6--Per-Interface Neighbor Discovery Cache Limit |
Cisco IOS XE Release 2.6 |
The per-interface Neighbor Discovery cache limit feature provides the ability to limit the number of Neighbor Discovery cache entries on a per interface basis. The following sections provide information about this feature: The following commands were introduced or modified for this feature: ipv6 nd cache interface-limit (global) , ipv6 nd cache interface-limit (interface), show ipv6 neighbors. |
IPv6--IPv6 Static Cache Entry for Neighbor Discovery |
Cisco IOS XE Release 2.1 |
The IPv6 static cache entry for Neighbor Discovery feature allows static entries to be made in the IPv6 neighbor cache. |
IPv6 Data Link--Cisco High-Level Data Link Control (HDLC) |
Cisco IOS XE Release 2.1 |
In IPv6 networks, a data link is a network sharing a particular link-local prefix. HDLC is a type of data link supported for IPv6. |
IPv6 Data Link--Fast Ethernet |
Cisco IOS XE Release 2.1 |
In IPv6 networks, a data link is a network sharing a particular link-local prefix. Fast Ethernet data links supported for IPv6. |
IPv6 Data Link--FDDI |
Cisco IOS XE Release 2.1 |
In IPv6 networks, a data link is a network sharing a particular link-local prefix. FDDI is a type of data link supported for IPv6. |
IPv6 Data Link--Frame Relay PVC |
Cisco IOS XE Release 2.1 |
In IPv6 networks, a data link is a network sharing a particular link-local prefix. Frame relay PVC is a type of data link supported for IPv6. |
IPv6 Data Link--PPP Service over Packet over SONET, ISDN, and Serial (Synchronous and Asynchronous) Interfaces |
Cisco IOS XE Release 2.1 |
In IPv6 networks, a data link is a network sharing a particular link-local prefix. PPP service over Packet over SONET, ISDN, and serial interfaces is a type of data link supported for IPv6. |
IPv6 Data Link--VLANs Using IEEE 802.1Q Encapsulation |
Cisco IOS XE Release 2.1 |
In IPv6 networks, a data link is a network sharing a particular link-local prefix. VLANs using IEEE 802.1Q encapsulation is a type of data link supported for IPv6. |
IPv6 Services--AAAA DNS Lookups over an IPv4 Transport |
Cisco IOS XE Release 2.1 |
IPv6 basic connectivity can be enhanced by configuring support for AAAA record types in the DNS name-to-address and address-to-name lookup processes. |
IPv6 Services--Cisco Discovery Protocol--IPv6 Address Family Support for Neighbor Information |
Cisco IOS XE Release 2.1 |
The Cisco Discovery Protocol IPv6 address support for neighbor information feature adds the ability to transfer IPv6 addressing information between two Cisco devices. |
IPv6 Services--DNS Lookups over an IPv6 Transport |
Cisco IOS XE Release 2.1 |
IPv6 supports DNS record types that are supported in the DNS name-to-address and address-to-name lookup processes. |
IPv6 Switching--Cisco Express Forwarding and Distributed Cisco Express Forwarding Support |
Cisco IOS XE Release 2.1 |
Cisco Express Forwarding for IPv6 is advanced, Layer 3 IP switching technology for the forwarding of IPv6 packets. Distributed Cisco Express Forwarding for IPv6 performs the same functions as CEFv6 but for distributed architecture platforms. |
SSO/ISSU Support for per-User IPv6 ACL for PPP Sessions |
Cisco IOS XE 3.2.1S |
Reproducing IPv6 ACLs on the active RP to the standby RP provides a consistent SSO and ISSU experience for active sessions. |
Unicast Reverse Path Forwarding for IPv6 |
Cisco IOS XE Release 2.1 |
The Unicast RPF feature mitigates problems caused by malformed or forged (spoofed) IPv6 source addresses that pass through an IPv6 router. |