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SRv6 in AI-ML Data Centers

Segment Routing for IPv6 (SRv6) is a method to enhance network traffic management. Network programming is the capability of a network to encode a network program into individual network instructions that are then inserted into the IPv6 packet headers. The IPv6 packet carrying the network instructions explicitly tells the network about the precise SRv6 nodes available for packet processing. The network instruction is the SRv6 SID that is represented by a 128-bit IPv6 address. The SIDs are distributed through the network in the IPv6 packet headers. I Along with the addressing, network instructions define a particular task or function for each SRv6-capable node in the SRv6 network.

SRv6 network programming provides the following benefits in an IPv6 network, such as one found in an AI-ML data center:

  • Seamless deployment: Network programming depends entirely on the IPv6 header and the header extension to transport a packet, eliminating protocols such as MPLS. This eases deployment without the need for any major hardware or software upgrade in a core IPv6 network.

  • Flexible deployment:An SRv6 ingress node can transport packets even if transit routers aren't SRv6-capable. This eliminates the need to deploy segment routing on all nodes in an IPv6 network.

  • Single-device versatality: Junos OS supports multiple functions on a single segment identifier (SID) and can inter-operate in the insert mode and the encapsulation mode. This allows a single device to simultaneously perform the provider (P) router and the provider edge (PE) router roles.

Table 1: SRv6 Features
Topic Use Case

Overview of SRv6 Network Programming in IS-IS Networks

Learn the benefits of SRv6 network programming.

Example: Configuring SRv6 Network Programming in IS-IS Networks

This example shows how to configure SRv6 network programing in an IS-IS network. This feature is useful for service providers whose networks are predominantly IPv6 and have not deployed MPLS.

SRv6 Network Programming and Layer 3 Services in BGP Networks

Learn how to deploy SRv6 networking programming in BGP networks.