Layer 3 Redundancy Protocols

Question 1

HSRP

Answer 1

Hot Standby Router Protocol

• Cisco proprietary, allows for active router and standby router
• creates virtual router as the default gateway

Question 2

CARP

Answer 2

Common Address Redundancy Protocol

• open standard variant of HSRP
• allows for active router and standby router
• creates virtual router as the default gateway

Question 3

VRRP

Answer 3

Virtual Router Redundancy Protocol

• IETP open standard variant of HSRP
• allows for active router and standby router
• creates virtual router as the default gateway

Question 4

GLBP

Answer 4

Gateway Load Balancing Protocol

• first hop redundany protocol by Cisco
• focuses on load balancing over redundancy
• allows for active/standby router, creates virtual router as the default gateway

Question 5

LACP

Answer 5

Link Aggregation Control Protocol

• redundant by having multiple links between devices
• load balancing occurs over multiple links
• multiple links appear as one single logical link