Home » SWITCH 642-813 Q&As » Section 5 - High Availability » 642-813 Q&A – Implement High Availability (61-62)

642-813 Q&A – Implement High Availability (61-62)

Section 5 – Implement High Availability, given a network design and a set of requirements

QUESTION NO: 61
Refer to the exhibit. What is the result of setting GLBP weighting at 105 with lower threshold 90 and upper threshold 100?

61
A. Only if both objects are up will this router will be available as an AVF for group 1.
B. Only if the state of both tracked objects goes down will this router release its status as an AVF for group 1.
C. If the state of one tracked object goes down then this router will release its status as an AVF for group 1.
D. This configuration is incorrect and will not have any effect on GLBP operation.
E. If both tracked objects go down and then one comes up, but the other remains down, this router will be available as an AVF for group 1.
Answer: B
Explanation:
To define the weighting thresholds for the interface with the following interface configuration command:

Switch(config-if)# glbp group weighting maximum [lower lower] [upper upper]

You must configure GLBP to know which objects to track so that the weighting can be adjusted with the following interface configuration command:

Switch(config-if)# glbp group weighting track object-number [decrement value]

When the tracked object fails, the weighting is decremented by value (1 to 254, default 10).

QUESTION NO: 62
You work as a network engineer at Company.com. You study the exhibit carefully. Which GLBP device hosts receive the MAC address assignment?
62 
A. R1
B. R2
C. The AVG
D. The AVF
Answer: D
Explanation:
GLBP differs from Cisco Hot Standby Redundancy Protocol (HSRP) and IETF RFC 3768 Virtual Router Redundancy Protocol (VRRP) in that it hasthe ability to load balance over multiple gateways. Like HSRP and VRRP an election occurs, but rather than a single active router winning the election GLBP elects an Active Virtual Gateway (AVG). The job of the AVG is to assign virtual
MAC addresses to each of the other GLBP routers and to assign each network host to one of the GLBP routers. The routers that receive this MAC address assignment are known as Active Virtual Forwarders (AVF).

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