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Cisco High Availability Features Roadmap
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Cisco High Availability Features Roadmap

Table Of Contents

Cisco High Availability Features Roadmap


Cisco High Availability Features Roadmap


First Published: December 31, 2007
Last Updated: December 4, 2010

This feature roadmap lists the Cisco IOS XE features documented in the Cisco IOS XE High Availability Configuration Guide and maps them to the documents in which they appear. The roadmap is organized so that you can select your release train and see the features in that release. Find the feature name you are searching for and click on the URL in the "Where Documented" column to access the document containing that feature.

Many legacy features have been incorporated into the configuration files, and these features may not have entries in this roadmap. For the latest feature information and caveats, see the release notes for your platform and software release.

Feature and Release Support

Table 1 lists High Availability feature support for the following Cisco IOS XE software release trains:

Cisco IOS XE Release 3.1S

Cisco IOS XE Release 2.5

Cisco IOS XE Release 2.3

Cisco IOS XE Release 2.1

Use Cisco Feature Navigator to find information about platform support and software image support. Cisco Feature Navigator enables you to determine which Cisco IOS XE software images support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.


Note Table 1 lists only the Cisco IOS XE software release that introduced support for a given feature in a given Cisco IOS XE software release train. Unless noted otherwise, subsequent releases of that Cisco IOS XE software release train also support that feature.


Table 1 lists the most recent release of each software train first and the features in alphabetical order within the release.

Table 1 Supported High Availability Features 

Release
Feature Name
Feature Description
Where Documented
Cisco IOS XE Release 2.1

Cisco IOS XE Release 2.1

AAA High Availability Support for Local PPPoX Sessions

This feature enhances the authentication, authorization, and accounting (AAA) capability to meet high availability (HA) criteria for locally terminated Point-to-Point Protocol (PPP) over Ethernet (PPPoE) and PPPoEoX sessions, where X represents VLAN, or QinQ.

AAA High Availability Support for Local PPPoX Sessions

Dual Cisco IOS processes on the same RP

This features allows a standby IOS process to be available on the same Route Processor as the active IOS process. This standby IOS process can be switched to in the event of an IOS failure, and can also be used to upgrade sub-package software in some scenarios as the standby IOS process in an ISSU upgrade. On the Cisco ASR 1000 Series Routers, IOS runs as one of many processes within the operating system.

Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide

Enhanced SNMP Support for High Availability

This document describes the enhancements and modifications made to the Cisco IOS Simple Network Management Protocol (SNMP) infrastructure to support SSO for Route Processors (RPs).

Configuring Stateful Switchover

IPv6: Base protocols high availability

This feature extends high availability (HA) features, nonstop forwarding and stateful switchover (NSF/SSO) and In Service Software Upgrade (ISSU), functionality to IPv6 protocols and applications.

Implementing IPv6 Addressing and Basic Connectivity

IPv6: NSF and Graceful Restart for MP-BGP IPv6 Address Family

The graceful restart capability is supported for IPv6 BGP unicast, multicast, and VPNv6 address families, enabling Cisco nonstop forwarding (NSF) functionality for BGP IPv6. The BGP graceful restart capability allows the BGP routing table to be recovered from peers without keeping the TCP state. NSF continues forwarding packets while routing protocols converge, therefore avoiding a route flap on switchover.

Implementing Multiprotocol BGP for IPv6

Cisco IOS XE Release 2.1

IPv6: RIPng Nonstop Forwarding

IPv6 Routing Information Protocol (RIP) supports nonstop forwarding (NSF). RIP registers as an IPv6 NSF client. Doing so has the benefit of using RIP routes installed in the Cisco Express Forwarding table until RIP has converged on the standby.

Implementing RIP for IPv6

IPv6: Static Route Nonstop Forwarding

IPv6 static routes support Cisco nonstop forwarding (NSF). NSF continues forwarding packets while routing protocols converge, therefore avoiding a route flap on switchover.

Implementing Static Routes for IPv6

ISSU

The In Service Software Upgrade (ISSU) feature allows Cisco IOS XE software to be updated or otherwise modified while packet forwarding continues. In most networks, planned software upgrades are a significant cause of downtime. ISSU allows Cisco IOS XE software to be modified while packet forwarding continues, which increases network availability and reduces downtime caused by planned software upgrades.

Cisco IOS XE In Service Software Upgrade Process

ISSU - ARP

This feature provides In Service Software Upgrade (ISSU) support for Address Resolution Protocol High Availability.

Cisco IOS XE In Service Software Upgrade Process

ISSU - Frame Relay

This feature delivers In Service Software Upgrade (ISSU) support for Frame Relay connections during a planned software upgrade on a dual-RP HA platform utilizing ISSU capability.

Cisco IOS XE In Service Software Upgrade Process

ISSU - GLBPv6

This feature delivers In Service Software Upgrade (ISSU) support for GLBPv6

Cisco IOS XE In Service Software Upgrade Process

ISSU - HDLC

This feature provides In Service Software Upgrade (ISSU) support for the High-Level Data Link Control (HDLC) protocol.

Cisco IOS XE In Service Software Upgrade Process

ISSU - HSRPv6

This feature provides In Service Software Upgrade (ISSU) support for Hot Standby Router Protocol for IPv6 (HSRPv6).

Cisco IOS XE In Service Software Upgrade Process

ISSU - IGMP snooping

This feature adds In Service Software Upgrade (ISSU) support for Internet Group Management Protocol (IGMP) Snooping.

Cisco IOS XE In Service Software Upgrade Process

ISSU - IPv6 uRPF

This feature adds In Service Software Upgrade (ISSU) support for IPv6 Unicast Reverse Path Forwarding (uRPF).

Cisco IOS XE In Service Software Upgrade Process

Cisco IOS XE Release 2.1

ISSU - IS-IS

This feature adds In Service Software Upgrade (ISSU) support for the Intermediate System-to-Intermediate System (IS-IS) protocol.

Cisco IOS XE In Service Software Upgrade Process

ISSU - Managed LNS MPLS

This feature adds In Service Software Upgrade (ISSU) support for Managed L2TP network server (LNS) Multiprotocol Label Switching Protocol (MPLS), also know as VRF-Lite MPLS.

Cisco IOS XE In Service Software Upgrade Process

ISSU - MLD Access Group

This feature adds In Service Software Upgrade (ISSU) support for Multicast Listener Discovery Protocol (ML) access groups.

Cisco IOS XE In Service Software Upgrade Process

ISSU - Multicast MPLS VPN

This feature adds In Service Software Upgrade (ISSU) support for multicast Multiprotocol Label Switching Protocol (MPLS) Virtual Private Networks (VPNs).

Cisco IOS XE In Service Software Upgrade Process

ISSU - NAT

This feature adds In Service Software Upgrade (ISSU) support for Network Address Translation (NAT).

Cisco IOS XE In Service Software Upgrade Process

ISSU - PPP/MLP

This feature adds In Service Software Upgrade (ISSU) support for Point-to-Point Protocol/Multilink PPP (PPP/MLP).

Cisco IOS XE In Service Software Upgrade Process

ISSU - QoS

This feature provides In Service Software Upgrade (ISSU) support for quality of service (QoS).

Cisco IOS XE In Service Software Upgrade Process

ISSU - SNMP

This feature adds In Service Software Upgrade (ISSU) support for the Simple Network Management Protocol (SNMP).

Cisco IOS XE In Service Software Upgrade Process

NSF Awareness (Nonstop Forwarding Awareness)

The NSF Awareness feature provides Nonstop Forwarding (NSF) support for routing protocols—Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), and Intermediate System-to-Intermediate System (IS-IS).

Configuring Nonstop Forwarding

NSF Awareness - EIGRP

This feature provides Nonstop Forwarding (NSF) support for Enhanced Interior Gateway Routing Protocol (EIGRP).

Configuring Nonstop Forwarding

NSF - BGP

This feature provides Border Gateway Protocol (BGP) support for Nonstop Forwarding (NSF).

Configuring Nonstop Forwarding

NSF - EIGRP

This feature provides Enhanced Interior Gateway Routing Protocol (EIGRP) support for Nonstop Forwarding (NSF).

Configuring Nonstop Forwarding

Cisco IOS XE Release 2.1

NSF - IS-IS

This feature provides Intermediate System-to-Intermediate System (IS-IS) support for Nonstop Forwarding (NSF).

Configuring Nonstop Forwarding

NSF - OSPF

This features adds Open Shortest Path First (OSPF) support for high availability (HA) Nonstop Forwarding (NSF).

Configuring Nonstop Forwarding

NSF—OSPF (RFC 3623 OSPF Graceful Restart

This document focuses on nonstop forwarding (NSF) for OSPFv2 in Cisco IOS XE software, using the IETF standardized graceful restart functionality as described in RFC 3623.

Configuring Nonstop Forwarding

NSF/SSO - GLBPv6

This feature provides high availability (HA) support for Cisco Gateway Load Balancing Protocol Version 6 (GLBPv6).

Configuring Nonstop Forwarding

ConfiguringStateful Switchover

NSF/SSO - HSRPv6

This feature provides high availability (HA) support for Hot Standby Router Protocol Version 6 (HSRPv6).

Configuring Nonstop Forwarding

Configuring Stateful Switchover

NSF/SSO - IPsec

This feature provides high availability (HA) support for IP security (IPsec).

Configuring Nonstop Forwarding

Configuring Stateful Switchover

NSF/SSO - IPv6 uRPF

This feature provides high availability (HA) support for IPv6 Unicast Reverse Path Forwarding (uRFP).

Configuring Nonstop Forwarding

Configuring Stateful Switchover

NSF/SSO - Managed LNS MPLS

This feature provides high availability (HA) support for Managed L2TP network server (LNS) Multiprotocol Label Switching Protocol (MPLS), also know as VRF-Lite MPLS.

Configuring Nonstop Forwarding

Configuring Stateful Switchover

NSF/SSO - MLD Access Group

This feature provides high availability (HA) support for Multicast Listener Discovery Protocol (MLD) Access Group.

Configuring Nonstop Forwarding

Configuring Stateful Switchover

NSF/SSO—MPLS VPN

This feature allows a provider edge (PE) router (with redundant Route Processors) to preserve data forwarding information in a Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) when the primary Route Processor restarts.

Configuring NSF/SSO—MPLS VPN

Cisco IOS XE Release 2.1

NSF/SSO (Nonstop Forwarding with Stateful Switchover)

Cisco Nonstop Forwarding (NSF) works with the Stateful Switchover (SSO) feature in Cisco IOS XE Software. NSF works with SSO to minimize the amount of time a network is unavailable to its users following a switchover. Stateful Switchover (SSO) maintains the layer two connectivity protocols between devices while Nonstop Forwarding (NSF) continues to forward IP packets during the route convergence time. The result is a transparent Route Processor (RP) failure; there are no loss sessions or route flaps in the network.

Configuring Nonstop Forwarding

Configuring Stateful Switchover

SSO - Frame Relay

This feature provides stateful switchover (SSO) support for Frame Relay. With SSO, Frame Relay dynamic state information is synchronized between the active Route Processor (RP) and standby RP.

Configuring Stateful Switchover

SSO - GLBP

This feature provides stateful switchover (SSO) support for the Cisco Gateway Load Balancing Protocol (GLBP). With SSO, GLBP can detect when a router is failing over to the secondary Route Processor (RP) and continue in its current GLBP group state.

Configuring Stateful Switchover

SSO - HDLC

This feature provides stateful switchover (SSO) support for High-Level Data Link Control (HDLC). HDLC SSO will synchronize dynamic HDLC information between a Primary Route Processor (RP) and a Secondary RP.

Configuring Stateful Switchover

SSO - IGMP Snooping

This feature provides stateful switchover (SSO) support for Internet Group Management Protocol (IGMP) snooping. SSO with Layer 2 multicast state between the primary and the secondary supervisors. This feature allows the user to see virtually no interruption in multicast streams upon supervisor switchover.

Configuring Stateful Switchover

SSO - Multilink PPP (MLP)

This feature provides stateful switchover (SSO) support for Multilink Point-to-Point Protocol (PPP). With SSO, specific PPP state information is synchronized between the active Route Processor (RP) and standby RP. Single-link PPP and Multilink PPP (MLP) sessions are maintained during RP switchover for IP connections only.

Configuring Stateful Switchover

Cisco IOS XE Release 2.1

SSO - PPP

This feature provides stateful switchover (SSO) support for Point-to-Point Protocol (PPP). With SSO, specific PPP state information is synchronized between the active Route Processor (RP) and standby RP.

Configuring Stateful Switchover

SSO - QoS

This feature provides stateful switchover (SSO) support for quality of service (QoS).

Configuring Stateful Switchover

Stateful Switchover

Development of the stateful switchover (SSO) feature is an incremental step within an overall program to improve the availability of networks constructed with Cisco IOS XE routers.

Configuring Stateful Switchover

Cisco IOS XE Release 2.3

Cisco IOS XE Release 2.3

ISSU - ATM

This feature provides In Service Software Upgrade (ISSU) support for ATM.

Cisco IOS XE In Service Software Upgrade Process

SSO - ATM

ATM Stateful Switchover (SSO) allows a router with redundant Route Processors (RPs) to exchange ATM state information to minimize the outage time due to RP failover.

Configuring Stateful Switchover

Cisco IOS XE Release 2.5

Cisco IOS XE Release 2.5

NSF/SSO - Multicast MPLS VPN

This feature is supported in Cisco IOS XE Release 2.5.

Configuring Nonstop Forwarding

Configuring Stateful Switchover

ISSU - Multicast MPLS VPN

This feature is supported in Cisco IOS XE Release 2.5.

Cisco IOS XE In Service Software Upgrade Process

Cisco IOS XE Release 3.1S

Cisco IOS XE 3.1S

ISSU - HSRPv6 on VRF interfaces

This feature provides ISSU - HSRPv6 on VRF interfaces for Cisco ASR 1000 Series Aggregation Services Routers.

Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide

NSF/SSO - HSRPv6 on VRF interfaces

This feature provides NSF/SSO support for HSRPv6 on VRF interfaces for Cisco ASR 1000 Series Aggregation Services Routers.

Configuring Nonstop Forwarding

Configuring Stateful Switchover