Browse Definitions :
Definition

segment routing

Segment routing is a computer networking process used by networking and traffic engineering professionals that organizes collections of information, or packets, to follow a linear set of instructions. This form of packet forwarding is a variant of source routing and can be installed on top of existing Multiprotocol Label Switching (MPLS) or IPv6 network infrastructure.

In segment routing, the network source defines the path for traffic which is then encoded in a packet header as an ordered list of nodes, referred to as segments. Using this framework helps network operators avoid traffic congestion and steer nodes over different paths based on requirements or the state of the network.

How segment routing works

The way that packets are transmitted along a path is determined by the type of network in use. In all networking, information is transmitted over a theoretical data plane (DP) within the network's infrastructure. Data that is transmitted comes directly from users and it is combined with data that is a part of the network. In segment routing, the information is organized into individual segments which travel along a determined path.

A segment is an instruction within a computer program or system. For example, a segment could be a forwarding instruction to transmit a packet to a specific interface. There are two types of segments, a node segment and an adjacency segment. Node segments identify the shortest path to a destination while adjacency segments link nodes together.

In a segment routed network, the SDN controller will assign each node a unique segment identifier, process it and calculate an appropriate path or response. As each instruction, or segment, occurs, it is designated as an activated segment. In most networking systems, the physical device used to carry out segment routing is a router, or a midpoint device between a computer and modem.

Benefits of segment routing

Segment routing is meant to serve as a simplified version of MPLS, a network that dynamically moves between internet protocols (IPs) in order to improve speed. It can be implemented within existing MLPS architecture, using resources more efficiently and speeding up processing and information exchange. Additional benefits of executing segment routing include easier scalability, better flexibility, higher latency, more balance between systems and improved operational simplicity.

This was last updated in January 2019

Continue Reading About segment routing

Networking
  • network management system

    A network management system, or NMS, is an application or set of applications that lets network engineers manage a network's ...

  • host (in computing)

    A host is a computer or other device that communicates with other hosts on a network.

  • Network as a Service (NaaS)

    Network as a service, or NaaS, is a business model for delivering enterprise WAN services virtually on a subscription basis.

Security
  • WebAuthn API

    The Web Authentication API (WebAuthn API) is a credential management application program interface (API) that lets web ...

  • Common Vulnerability Scoring System (CVSS)

    The Common Vulnerability Scoring System (CVSS) is a public framework for rating the severity of security vulnerabilities in ...

  • Dridex malware

    Dridex is a form of malware that targets victims' banking information, with the main goal of stealing online account credentials ...

CIO
  • audit program (audit plan)

    An audit program, also called an audit plan, is an action plan that documents what procedures an auditor will follow to validate ...

  • blockchain decentralization

    Decentralization is the distribution of functions, control and information instead of being centralized in a single entity.

  • outsourcing

    Outsourcing is a business practice in which a company hires a third party to perform tasks, handle operations or provide services...

HRSoftware
  • team collaboration

    Team collaboration is a communication and project management approach that emphasizes teamwork, innovative thinking and equal ...

  • employee self-service (ESS)

    Employee self-service (ESS) is a widely used human resources technology that enables employees to perform many job-related ...

  • learning experience platform (LXP)

    A learning experience platform (LXP) is an AI-driven peer learning experience platform delivered using software as a service (...

Customer Experience
  • market segmentation

    Market segmentation is a marketing strategy that uses well-defined criteria to divide a brand's total addressable market share ...

  • sales pipeline

    A sales pipeline is a visual representation of sales prospects and where they are in the purchasing process.

  • market basket analysis

    Market basket analysis is a data mining technique used by retailers to increase sales by better understanding customer purchasing...

Close