Gateway Load Balancing Protocol

Gateway Load Balancing Protocol

Gateway Load Balancing Protocol (GLBP) is a Cisco proprietary protocol that attempts to overcome the limitations of existing redundant router protocols by adding basic load balancing functionality.

In addition to being able to set priorities on different gateway routers, GLBP also allows a weighting parameter to be set. Based on this weighting (compared to others in the same virtual router group), ARP requests will be answered with MAC addresses pointing to different routers. Thus, load balancing is not based on traffic load, but rather on the number of hosts that will use each gateway router.

GLBP assigns the primary router as the Active Virtual Gateway (AVG) and the secondary router as the Active Virtual Forwarder (AVF). There can be multiple AVFs.

By default, GLBP routers use the local multicast address to send hello packets to their peers every 3 seconds over UDP 3222 (source and destination).

ee also

* VRRP Virtual router redundancy protocol
* HSRP Cisco proprietary router redundancy solution
* Common Address Redundancy Protocol

External links

* [ Cisco GLBP documentation]

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Gateway Load Balancing Protocol — est un protocole propriétaire Cisco qui permet de faire de la redondance ainsi que de la répartition de charge sur plusieurs routeurs utilisant une seule adresse IP virtuelle, mais plusieurs adresses MAC virtuelles. Le protocole GLBP élit un… …   Wikipédia en Français

  • Gateway — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Sur les autres projets Wikimedia : « Gateway », sur le Wiktionnaire (dictionnaire universel) Gateway est un mot anglais qui, au sens propre …   Wikipédia en Français

  • Hot Standby Router Protocol — (HSRP) is a Cisco proprietary redundancy protocol for establishing a fault tolerant default gateway, and has been described in detail in RFC 2281. The Virtual Router Redundancy Protocol (VRRP) is a standards based alternative to HSRP defined in… …   Wikipedia

  • Virtual Router Redundancy Protocol — (VRRP) is a non proprietary redundancy protocol described in RFC 3768 designed to increase the availability of the default gateway servicing hosts on the same subnet. This increased reliability is achieved by advertising a virtual router (an… …   Wikipedia

  • Common Address Redundancy Protocol — The Common Address Redundancy Protocol or CARP is a protocol which allows multiple hosts on the same local network to share a set of IP addresses. Its primary purpose is to provide failover redundancy, especially when used with firewalls and… …   Wikipedia

  • Hot Standby Router Protocol — (HSRP) est un protocole propriétaire de Cisco implémenté sur les routeurs et les commutateurs de niveau 3 permettant une continuité de service. HSRP est principalement utilisé pour assurer la disponibilité de la passerelle par défaut dans un sous …   Wikipédia en Français

  • Virtual Router Redundancy Protocol — (VRRP) es un protocolo de redundancia no propietario definido en el RFC 3768 diseñado para aumentar la disponibilidad de la puerta de enlace por defecto dando servicio a máquinas en la misma subred. El aumento de fiabilidad se consigue mediante… …   Wikipedia Español

  • Border Gateway Protocol — BGP redirects here. For the Formula One Team, see Brawn GP. The Border Gateway Protocol (BGP) is the protocol backing the core routing decisions on the Internet. It maintains a table of IP networks or prefixes which designate network reachability …   Wikipedia

  • Enhanced Interior Gateway Routing Protocol — (EIGRP) is a Cisco proprietary routing protocol loosely based on their original IGRP. EIGRP is an advanced distance vector routing protocol, with optimizations to minimize both the routing instability incurred after topology changes, as well as… …   Wikipedia

  • Border Gateway Protocol — BGP im TCP/IP‑Protokollstapel: Anwendung BGP Transport TCP Internet IP (IPv4, IPv6) Netzzugang Ethernet Token …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”