1 # 2 # LAPB Data Link Drive 3 # 4 5 config LAPB 6 tristate "LAPB Data Link Driver" 7 ---help--- 8 Link Access Procedure, Balanced (LAPB) is the data link layer (i.e. 9 the lower) part of the X.25 protocol. It offers a reliable 10 connection service to exchange data frames with one other host, and 11 it is used to transport higher level protocols (mostly X.25 Packet 12 Layer, the higher part of X.25, but others are possible as well). 13 Usually, LAPB is used with specialized X.21 network cards, but Linux 14 currently supports LAPB only over Ethernet connections. If you want 15 to use LAPB connections over Ethernet, say Y here and to "LAPB over 16 Ethernet driver" below. Read 17 <file:Documentation/networking/lapb-module.txt> for technical 18 details. 19 20 To compile this driver as a module, choose M here: the 21 module will be called lapb. If unsure, say N.