AIS AI2524 Manuel D’Utilisation
AI2524 Router Card User’s Manual
Page 13-18
August 1997
2524UM
Customize Frame
Relay for Your
Network
Relay for Your
Network
Perform these tasks to customize Frame Relay:
z
Configure Frame Relay Subinterfaces
z
z
z
z
z
z
z
Configure Frame Relay Subinterfaces
To understand and define Frame Relay Subinterfaces, perform these
tasks:
tasks:
z
Understand Frame Relay Subinterfaces
z
z
After these tasks are completed, you can also perform these optional
tasks:
tasks:
z
z
Understand Frame Relay Subinterfaces
Frame Relay subinterfaces provide a mechanism for supporting par-
tially meshed Frame Relay networks. Most protocols assume transitiv-
ity on a logical network; that is, if station A can talk to station B, and
station B can talk to station C, then station A should be able to talk to
station C directly. Transitivity is true on LANs, but not on Fram
Relay networks unless A is directly connected to C.
tially meshed Frame Relay networks. Most protocols assume transitiv-
ity on a logical network; that is, if station A can talk to station B, and
station B can talk to station C, then station A should be able to talk to
station C directly. Transitivity is true on LANs, but not on Fram
Relay networks unless A is directly connected to C.
Additionally, certain protocols such as transparent bridging cannot b
supported on partially meshed networks because they require "split
horizon," in which a packet received on an interface cannot be trans
mitted out the same interface even if the packet is received and trans
mitted on different virtual circuits.
supported on partially meshed networks because they require "split
horizon," in which a packet received on an interface cannot be trans
mitted out the same interface even if the packet is received and trans
mitted on different virtual circuits.