What is the difference between HSRP and GLBP?
What is the difference between HSRP 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. With GLBP, the single virtual IP address is associated with one virtual MAC address per GLBP member.
What is GLBP used for?
Gateway Load Balancing Protocol (GLBP) protects data traffic from a failed router or circuit, like Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Protocol (VRRP), while allowing packet load sharing between a group of redundant routers.
How do I configure GLBP?
2.1 (R2) on their Fa0/0 interfaces. Configure GLBP between R1 and R2 using the IP addresses 10.10. 10.1/24 (R1) and 10.10….VRRP Simple Example.
| 1 | Enter privileged EXEC mode. | R2>enable |
|---|---|---|
| 9 | Configure GLBP using a virtual IP address of 10.10.10.5 using group 1. | R2(config-if)#glbp 1 ip 10.10.10.5 |
How does GLBP load balancing Work?
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.
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.
What is the significant difference with Glbp?
HSRP and VRRP work similarly, with the most significant difference being HSRP is proprietary to Cisco. Like HSRP, GLBP is also Cisco proprietary and the most significant difference between these two protocols is how they handle load balancing.
What is HSRP VRRP and Glbp?
There exists a class of redundancy protocols known as FHRPs (First Hop Redundancy Protocols) that include VRRP (Virtual Router Redundancy Protocol), HSRP (Hot Standby Router Protocol), and GLBP (Gateway Load Balancing Protocol). It is called the active router with HSRP and the master router with VRRP.
What is the difference between HSRP version 1 and 2?
Version 1 is the default version of HSRP. HSRP version 2 uses the new IP multicast address 224.0. This new multicast address allows CGMP leave processing to be enabled at the same time as HSRP. HSRP version 2 permits an expanded group number range, 0 to 4095, and consequently uses a new MAC address range 0000.0C9F.
What is preempt in Glbp?
Router(config-if)# glbp 10 forwarder preempt. Configures the router to preempt, or take over, as AVF for group 10 if this router has a higher priority than the current AVF. This command is enabled by default with a delay of 30 seconds.
Which command enables Glbp on an interface?
The “glbp ip ” command is used to enable GLBP (Gateway Load Balancing Protocol) on the configured interface.
What is AVG in Glbp?
The AVG (Active Virtual Gateway) has a special role in GLBP (Gateway Load Balancing Protocol). Two or more routers on a LAN subnet form a GLBP group. Each GLBP router interface has a unique physical IP address.
Which load balancing algorithm is Glbp by default?
round robin
This is basically how GLBP works. Different load-balancing algorithms are supported – the default one is round robin, with options for weighted load balancing and source-MAC based. The last one will always respond with the same vMAC to the same source MAC address, thereby defining sort of host-gateway “stickiness”.
