biboPPPEncapsulation

The layer 2 encapsulation of the link. The use of
ppp(1) as described in RFC 1661 is the preferred 
encapsulation for point-to-point links. The encapsulation 
is set to x25(2) for X.25-only links and to x25-ppp(3) for 
concurrent use of X.25 and PPP.
              
	Mpr-lapb(7) and mpr-hdlc(8) are popular proprietary
	encapsulations. They both use the ethertype number
	for protocol multiplexing. The former is used when
	error correction or data compression (v42bis) is desired.
	The latter (mpr-hdlc) is compatible to Cisco's HDLC
	encapsulation.
              
	On IP-only links it is also possible to use the
	ISO LAPB protocol (ip-lapb(4)), also known as X.75,
	or raw hdlc framing (ip-hdlc(6)).
              
The x75-ppp encapsulation provides PPP over X.75 (LAPB)
	framing,  x75btx-ppp provides PPP over T.70 and LAPB framing
	including a BTX protocol header.
              
	The x25-nosig(13) encapsulation is used to establish X.25
	connections over dialup links without specific signalling
	on the D-channel (pure data call).
              
The x25-ppp-opt encapsulation provides a special kind of the
x25-ppp encapsulation. Dialin partner will be authenticated
either outband to establish an X.25 connection via ISDN or
optional inband by using the point-to-point protocol (PPP).
Concurrent use of X.25 and PPP encapsulation is excluded.
              
	The x25-noconfig(16) and x25-noconfig-nosig(17) encapsulations
	provide a solution for establishing X.25 connections via ISDN.
	The dial number will be derived from X.25 destination address
	by using special rules. 
              
	V42bis data compression can be enabled on LAPB links only, 
	because v42bis requires an error free connection.
              
	The v120-ppp(19) enables a GSM HSCSD connect. Data Rates up 
	to 57KBps are possible.
              
	Dialup links can be removed by setting this field
to delete(5). This has no effect on permanent links.

MIB

BIANCA-BRICK-PPP-MIB

OID

.1.3.6.1.4.1.272.4.3.1.1.3

Type

column

Access

readwrite

Status

mandatory

Parent

biboPPPEntry