ALERT

[FREE DEMO] Deploy Your Enterprise Cloud in Minutes

Exterior Gateway Protocol (EGP)

Definition - What does Exterior Gateway Protocol (EGP) mean?

Exterior Gateway Protocol (EGP) is an obsolete routing protocol that was used for data exchange between neighboring gateway hosts in autonomous systems. EGP was frequently used by research institutes, universities, government agencies and private organizations, but was replaced by Border Gateway Protocol (BGP).

EGP is based on periodic message exchange polling for neighbor reachability and poll commands to request update responses. EGP is documented in RFC 904, which was published in April of 1984.

Techopedia explains Exterior Gateway Protocol (EGP)

Prior to the introduction of BGP, Internet hosts used EGP for data table routing exchanges. The EGP routing table includes known routers, addresses, cost metrics and each optimal route selection path. The EGP model is built with finite event, action and transition automation.

EGP mechanisms are:

  • Acquire neighbors
  • Monitor neighbors
  • Exchange data as update messages

While Interior Gateway Protocols are used within a domain, EGP provides a way for neighboring routers in different domains to share information.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
Tweat cdn.techopedia.com
"Techopedia" on Twitter


'@Techopedia'
Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.