Chapter 6 IPv6 VPN over MPLS

IPv6 Addressing

The Cisco ANA NetworkVision VRF table does not display IPv6 VRF routing information.

If an interface or subinterface does not have an IPv4 or IPv6 IP address, the interface is not discovered and not shown in Cisco ANA NetworkVision.

The Layer 1 topology between 6VPE and an IPv6 CE is discovered only when CDP is enabled.

BGP neighbor discovery does not occur between PE and CE interfaces configured with IPv6 addresses only.

Correlation flows between IPv6-only interfaces is not supported.

IPv6 Addressing

IPv6 addresses are 128-bit identifiers for interfaces and sets of interfaces. Cisco ANA supports the following IPv6 address types:

Unicast—Identifier for a single interface. A packet sent to a unicast address is delivered to the interface identified by that address.

Anycast—Identifier for a set of interfaces (typically belonging to different nodes). A packet sent to an anycast address is delivered to one of the interfaces identified by that address (the “nearest” one, according to how the routing protocol measures distance.

Multicast—Identifier for a set of interfaces (typically belonging to different nodes). A packet sent to a multicast address is delivered to all interfaces identified by that address.

Cisco ANA supports interfaces with multiple IPv6 addresses. The lowest IPv6 address is presented in the Cisco ANA tables; all addresses are shown in the detailed interface properties view. Cisco ANA does not model link-local unicast addresses because they are not used in the routing and forwarding tables.

The following sections provide additional IPv6 address format information:

IPv6 Address Representation, page 6-6

IPv6 Address Prefix Text Representation, page 6-7

Note For more IPv6 addressing information, see “RFC2460 - Internet Protocol, Version 6 (IPv6 Specification.”

IPv6 Address Representation

IPv6 has three conventional text string representation forms. The preferred form is x:x:x:x:x:x:x:x, where x is the hexadecimal value of the eight 16-bit address pieces, for example:

FEDC:BA98:7654:3210:FEDC:BA98:7654:3210

1080:0:0:0:8:800:200C:417A

Because IPv6 addresses frequently contain long strings of zero bits, two colons (::) can be used to indicate multiple 16-bit groups of zeros. Table 6-3shows examples.

Cisco Active Network Abstraction 3.6.6 MPLS User Guide

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Cisco Systems 3.6.6 manual IPv6 Addressing, IPv6 Address Representation

3.6.6 specifications

Cisco Systems has continually evolved its networking solutions to address the demands of modern enterprises, with the introduction of the Cisco Systems 3.6.6 version being no exception. This version integrates cutting-edge technologies designed to enhance network performance, security, and management efficiency, catering to the increasingly complex needs of businesses across various sectors.

One of the standout features of Cisco Systems 3.6.6 is its enhanced support for automation and orchestration. This version incorporates advanced automation tools, allowing IT teams to deploy and configure network resources more rapidly and efficiently. With features such as Cisco DNA Center’s intent-based networking, organizations can streamline operations and reduce manual intervention, leading to quicker service delivery and reduced operational costs.

Security remains a top priority, and Cisco Systems 3.6.6 includes improved security protocols that help protect sensitive data and critical infrastructure. The integration of Cisco SecureX provides a unified view of security across the network, enabling organizations to respond to threats in real-time, manage vulnerabilities proactively, and maintain compliance with regulatory standards. The incorporation of machine learning and AI-driven analytics ensures that potential threats are identified and mitigated before they can escalate.

Interoperability is another key characteristic of version 3.6.6, allowing existing Cisco hardware and software to work seamlessly together. This flexibility ensures that enterprises can leverage their current investments while adopting newer technologies without the need for a complete overhaul of their existing network architecture.

Additionally, Cisco Systems 3.6.6 has enhanced support for IoT devices, integrating robust frameworks that enable organizations to manage and secure an increasing number of connected devices. With the proliferation of IoT in various industries, this feature is vital for maintaining efficiency and security, as it allows for better monitoring and control over the connected ecosystem.

In conclusion, Cisco Systems 3.6.6 embodies a comprehensive approach to modern networking challenges. Its emphasis on automation, advanced security features, interoperability, and IoT support positions it as a pivotal solution for businesses looking to enhance their operational capabilities and embrace digital transformation. As organizations worldwide adapt to an ever-evolving technological landscape, Cisco Systems 3.6.6 stands out as a reliable partner in navigating these complexities.