What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two.)
A.
They create split-horizon issues.
B.
They require a unique subnet within a routing domain.
C.
They emulate leased lines.
D.
They are ideal for full-mesh topologies.
E.
They require the use of NBMA options when using OSPF.
Access to Frame Relay networks is made through private leased lines at speeds ranging from 56 kbps to 45 Mbps.
Physical loop connection–A leased line or dedicated line must exist between the router (DTE) and the local Frame Relay switch.
0
0
Configuring Frame Relay Encapsulation on Cisco 12000 Series POS Interfaces – support three layer-2 encapsulation types: point to point protocol (PPP), … Frame Relay encapsulation for such interfaces is … subinterfaces, each pair of routers has its own subnet.
0
0
D is wrong.
Point-To-Point subinterfaces are used for partial mesh topologies, which have separate access links between each pair of routers logically. Physically, there is only one link, from the router to the frame relay switch.
Since each access link acts as a separate interface, they must have different subnets. Each subinterface is associated to separate access links, and are why they need separate subnets.
0
0
unique – lease
0
0