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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 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, by default, load balancing is not based on traffic load, but rather on the number of hosts that will use each gateway router. By default, GLBP load balances in round-robin fashion.

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  • 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 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, by default, load balancing is not based on traffic load, but rather on the number of hosts that will use each gateway router. By default, GLBP load balances in round-robin fashion. GLBP elects one AVG (Active Virtual Gateway) for each group. Other group members act as backup in case of AVG failure. In case there are more than two members, the second best AVG is placed in the Standby state and all other members are placed in the Listening state. This is monitored using hello and holdtime timers, which are 3 and 10 seconds by default. The elected AVG then assigns a virtual MAC address to each member of the GLBP group, including itself, thus enabling AVFs (Active Virtual Forwarders). Each AVF assumes responsibility for forwarding packets sent to its virtual MAC address. There could be up to four AVFs at the same time. By default, GLBP routers use the local multicast address 224.0.0.102 to send hello packets to their peers every 3 seconds over UDP 3222 (source and destination). Cisco implemented IPv6 support for GLBP in IOS release 12.2(33)SXI. (en)
  • Gateway Load Balancing Protocol (GLBP) es un protocolo propietario de Cisco que intenta superar las limitaciones de los protocolos de router redundantes existentes añadiendo la funcionalidad de balanceo de carga. (es)
  • Gateway Load Balancing Protocol est un protocole propriétaire Cisco permettant de la redondance et de la répartition de charge sur plusieurs routeurs en utilisant une seule adresse IP virtuelle, associée à plusieurs adresses MAC virtuelles. Le protocole GLBP élit un Active Virtual Gateway (AVG) qui va répondre aux requêtes ARP pour l'adresse IP virtuelle.GLBP permet de donner un poids variable à chacun des routeurs participants pour la répartition de la charge entre ces routeurs. La charge est donc répartie par hôte dans le sous-réseau. Par défaut, GLBP utilise l'adresse IP multicast 224.0.0.102 pour l'envoi des paquets Hello et le numéro de port UDP 3222.IPv6 est pris en charge à partir d'IOS 12.2(33) SXI. (fr)
  • Gateway Load Balancing Protocol (以下GLBPと略す) は、シスコシステムズのルータに実装されている、ルータの多重化を行うための通信プロトコル。主にゲートウェイのロードバランサ、多重化としての役割をはたす。 (ja)
  • Il Gateway Load Balancing Protocol (GLBP) è un protocollo di rete proprietario Cisco che unisce le caratteristiche di ridondanza del gateway predefinito tipiche dell'HSRP con la possibilità di effettuare load balancing del traffico in uscita da una sede.Analogamente all'HSRP, il protocollo GLBP utilizza i meccanismi di ARP ed indirizzi IP e MAC virtuali per reindirizzare gli host della LAN verso un gateway di uscita. A differenza dell'HSRP, il gateway di uscita non sarà lo stesso per tutti gli host. Il GLBP definisce le seguenti entità: * un gateway predefinito virtuale (AVG - Active Virtual Gateway). Coincide con uno dei router fisici, ma ha un indirizzo IP ad esso dedicato e diverso da quello dei router fisici. Tutti gli utenti della LAN dovranno scegliere questo indirizzo IP come gateway predefinito. * almeno due (e massimo 4) forwarder virtuali (AVF - Active Virtual Forwarder). Coincidono con i router fisici, ma ad ognuno è assegnato (automaticamente dal protocollo) un indirizzo MAC virtuale. Sono i router da cui esce il traffico della sede. Un AVG può essere anche AVF. Quindi ogni router fisico su cui è configurato il GLBP si vedrà assegnati: * un indirizzo MAC fisico, come tutti i router * un indirizzo MAC virtuale, che lo identifica come AVF * un indirizzo IP di LAN fisico, come tutti i router * un indirizzo IP di LAN virtuale, ma solo sul router che funge da AVG (it)
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  • Gateway Load Balancing Protocol (GLBP) es un protocolo propietario de Cisco que intenta superar las limitaciones de los protocolos de router redundantes existentes añadiendo la funcionalidad de balanceo de carga. (es)
  • Gateway Load Balancing Protocol (以下GLBPと略す) は、シスコシステムズのルータに実装されている、ルータの多重化を行うための通信プロトコル。主にゲートウェイのロードバランサ、多重化としての役割をはたす。 (ja)
  • 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 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, by default, load balancing is not based on traffic load, but rather on the number of hosts that will use each gateway router. By default, GLBP load balances in round-robin fashion. (en)
  • Gateway Load Balancing Protocol est un protocole propriétaire Cisco permettant de la redondance et de la répartition de charge sur plusieurs routeurs en utilisant une seule adresse IP virtuelle, associée à plusieurs adresses MAC virtuelles. Le protocole GLBP élit un Active Virtual Gateway (AVG) qui va répondre aux requêtes ARP pour l'adresse IP virtuelle.GLBP permet de donner un poids variable à chacun des routeurs participants pour la répartition de la charge entre ces routeurs. La charge est donc répartie par hôte dans le sous-réseau. (fr)
  • Il Gateway Load Balancing Protocol (GLBP) è un protocollo di rete proprietario Cisco che unisce le caratteristiche di ridondanza del gateway predefinito tipiche dell'HSRP con la possibilità di effettuare load balancing del traffico in uscita da una sede.Analogamente all'HSRP, il protocollo GLBP utilizza i meccanismi di ARP ed indirizzi IP e MAC virtuali per reindirizzare gli host della LAN verso un gateway di uscita. A differenza dell'HSRP, il gateway di uscita non sarà lo stesso per tutti gli host. Il GLBP definisce le seguenti entità: (it)
rdfs:label
  • Gateway Load Balancing Protocol (es)
  • Gateway Load Balancing Protocol (en)
  • Gateway Load Balancing Protocol (it)
  • Gateway Load Balancing Protocol (fr)
  • Gateway Load Balancing Protocol (ja)
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