Which statement is true?

Refer to the exhibit.

Both routers are configured for the GLBP. Which statement is true?

A.
The default gateway addresses of both hosts should be set to the IP addresses of both routers.

B.
The default gateway address of each host should be set to the virtual IP address.

C.
The hosts learn the proper default gateway IP address from router A.

D.
The hosts have different default gateway IP addresses and different MAC addresses for each
router.

Explanation:
GLBP performs a similar, but not identical, function for the user as the HSRP and VRRP. Both
HSRP and VRRP protocols allow multiple routers to participate in a virtual router group configured
with a virtual IP address. One member is elected to be the active router to forward packets sent to
the virtual IP address for the group. The other routers in the group are redundant until the active
router fails. With standard HSRP and VRRP, these standby routers pass no traffic in normal
operation – which is wasteful. Therefore the concept cam about for using multiple virtual router
groups, which are configured for the same set of routers. But to share the load, the hosts must be
configured for different default gateways, which results in an extra administrative burden of going
around and configuring every host and creating 2 or more groups of hosts that each use a different
default gateway.
GLBP is similar in that it provides load balancing over multiple routers (gateways) – but it can do
this using only ONE virtual IP address!!! Underneath that one virtual IP address is multiple virtual
MAC addresses, and this is how the load is balanced between the routers. Instead of the hassle of
configuring all the hosts with a static Default Gateway, you can lket them use ARP’s to find their
own. Multiple gateways in a “GLBP redundancy group” respond to client Address Resolution
Protocol (ARP) requests in a shared and ordered fashion, each with their own unique virtual MAC
addresses. As such, workstation traffic is divided across all possible gateways. Each host is

configured with the same virtual IP address, and all routers in the virtual router group participate in
forwarding packets
Reference: HSRP, GLBP, and VRRP
http://www.infocellar.com/networks/Routers/HSRP-GLBP-VRRP.htm