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What is AVG and AVF in GLBP?
GLBP stands for Gateway Load Balancing Protocol and just like HSRP / VRRP it is used to create a virtual gateway that you can use for hosts. The role of the AVG is to assign a virtual MAC address to all other devices running GLBP. All devices will become an AVF (Active Virtual Forwarder) including the AVG.
When using GLBP if the AVG router fails what router becomes the next AVG?
Since there is just one AVG per a GLBP group, the procedure is pretty simple: each candidate AVG has a priority value assigned; the highest priority router becomes an active AVG, the next by priority becomes a standby AVG.
What is difference between HSRP VRRP and GLBP?
The main difference is that GLBP allows the load balancing of traffic among the master and standby routers while in HSRP (and VRRP) the standby routers do not help handle traffic. However VRRP load balancing is a proprietary implementation of VRRP and uses specific MAC addresses for that purpose.
What is the benefit of GLBP?
GLBP Benefits GLBP supports up to 1024 virtual routers (GLBP groups) on each physical interface of a router, and up to 4 virtual forwarders per group. The redundancy scheme of GLBP enables you to preempt an active virtual gateway with a higher priority backup virtual gateway that has become available.
What happens when an HSRP active router fails select two?
Terms in this set (15) What happens when an HSRP active router fails? (Select two.) The HSRP standby router becomes the active router after the holdtime expires on the hello message. Additional HSRP member routers transition from the listen state after the holdtime expires on the hello message.
Which is the GLBP gateway with the highest priority?
GLBP Gateway Priority. If another router existed in the same GLBP group with a higher priority, then the router with the highest priority would be elected. If both routers have the same priority, the backup virtual gateway with the higher IP address would be elected to become the active virtual gateway.
How does the GLBP active virtual gateway ( Avg ) work?
GLBP Active Virtual Gateway Members of a GLBP group elect one gateway to be the active virtual gateway (AVG) for that group. Other group members provide backup for the AVG in the event that the AVG becomes unavailable. The AVG assigns a virtual MAC address to each member of the GLBP group.
How is a GLBP group number assigned to an AVF?
The automatically generated MAC assigned to each AVF is of the format of 0007.b4xx.xxyy, where Each GLBP process uses a GLBP group number to differentiate between GLBP processes as one single interface can participate in multiple GLBP processes at the same time
How does GLBP virtual MAC address assignment ( AVF ) work?
GLBP virtual Mac address Assignment : When a subnet device (host) wants to send traffic, it requests a Mac address for the virtual IP (gateway) by sending an ARP request. In response to the ARP request, AVG will provide one of the virtual Mac address (provided to AVF by AVG).