Home » Cisco » 300-101 » Which two ways can split horizon issues be overcome in a Frame Relay network environment?
In which two ways can split horizon issues be overcome in a Frame Relay network environment? (Choose two.)
A. Configuring one physical serial interface with Frame Relay to various remote sites.
B. Configure a loopback interface with Frame Relay to various remote sites.
C. Configuring multiple subinterfaces on a single physical interface to various remote sites.
D. Enabling split horizon.
E. Disabling split horizon
Correct Answer: CE
Explanation/Reference:
1/ IP split horizon checking is disabled by default for Frame Relay encapsulation to allow routing updates to go in and out of the same interface. An exception is the Enhanced Interior Gateway Routing Protocol (EIGRP) for which split horizon must be explicitly disabled.
2/Configuring Frame Relay subinterfaces ensures that a single physical interface is treated as multiple virtual interfaces. This capability allows you to overcome split horizon rules so packets received on one virtual interface can be forwarded to another virtual interface, even if they are configured on the same physical interface.
http://www.cisco.com/c/en/us/support/docs/wan/frame-relay/14168-fr-faq.html
