📄 rfc1473.txt
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RFC 1473 PPP/IP MIB June 1993
network protocol has reached the Opened state."
::= { pppIpEntry 1 }
pppIpLocalToRemoteCompressionProtocol OBJECT-TYPE
SYNTAX INTEGER {
none(1),
vj-tcp(2)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The IP compression protocol that the local
PPP-IP entity uses when sending packets to the
remote PPP-IP entity. The value of this object
is meaningful only when the link has reached
the open state (pppIpOperStatus is opened)."
::= { pppIpEntry 2 }
pppIpRemoteToLocalCompressionProtocol OBJECT-TYPE
SYNTAX INTEGER {
none(1),
vj-tcp(2)
}
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The IP compression protocol that the remote
PPP-IP entity uses when sending packets to the
local PPP-IP entity. The value of this object
is meaningful only when the link has reached
the open state (pppIpOperStatus is opened)."
::= { pppIpEntry 3 }
pppIpRemoteMaxSlotId OBJECT-TYPE
SYNTAX INTEGER(0..255)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The Max-Slot-Id parameter that the remote node
has advertised and that is in use on the link.
If vj-tcp header compression is not in use on
the link then the value of this object shall be
0. The value of this object is meaningful only
when the link has reached the open state
(pppIpOperStatus is opened)."
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RFC 1473 PPP/IP MIB June 1993
::= { pppIpEntry 4 }
pppIpLocalMaxSlotId OBJECT-TYPE
SYNTAX INTEGER(0..255)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The Max-Slot-Id parameter that the local node
has advertised and that is in use on the link.
If vj-tcp header compression is not in use on
the link then the value of this object shall be
0. The value of this object is meaningful only
when the link has reached the open state
(pppIpOperStatus is opened)."
::= { pppIpEntry 5 }
--
-- The PPP IP Configuration table.
-- This is a separate table in order to facilitate
-- placing these variables in a separate MIB view.
--
pppIpConfigTable OBJECT-TYPE
SYNTAX SEQUENCE OF PppIpConfigEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table containing configuration variables for
the IPCP for the local PPP entity."
::= { pppIp 2 }
pppIpConfigEntry OBJECT-TYPE
SYNTAX PppIpConfigEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"IPCP information for a particular PPP link."
INDEX { ifIndex }
::= { pppIpConfigTable 1 }
PppIpConfigEntry ::= SEQUENCE {
pppIpConfigAdminStatus
INTEGER,
pppIpConfigCompression
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RFC 1473 PPP/IP MIB June 1993
INTEGER
}
pppIpConfigAdminStatus OBJECT-TYPE
SYNTAX INTEGER {open(1), close(2)}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The immediate desired status of the IP network
protocol. Setting this object to open will
inject an administrative open event into the IP
network protocol's finite state machine.
Setting this object to close will inject an
administrative close event into the IP network
protocol's finite state machine."
::= { pppIpConfigEntry 1 }
pppIpConfigCompression OBJECT-TYPE
SYNTAX INTEGER {
none(1),
vj-tcp(2)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"If none(1) then the local node will not
attempt to negotiate any IP Compression option.
Otherwise, the local node will attempt to
negotiate compression mode indicated by the
enumerated value. Changing this object will
have effect when the link is next restarted."
REFERENCE
"Section 4.0, Van Jacobson TCP/IP Header
Compression of RFC1332."
DEFVAL { none }
::= { pppIpConfigEntry 2 }
END
5. Acknowledgements
This document was produced by the PPP working group. In addition to
the working group, the author wishes to thank the following
individuals for their comments and contributions:
Bill Simpson -- Daydreamer
Kastenholz [Page 8]
RFC 1473 PPP/IP MIB June 1993
Glenn McGregor -- Merit
Jesse Walker -- DEC
Chris Gunner -- DEC
6. Security Considerations
The PPP MIB affords the network operator the ability to configure and
control the PPP links of a particular system, including the PPP
authentication protocols. This represents a security risk.
These risks are addressed in the following manners:
(1) All variables which represent a significant security risk
are placed in separate, optional, MIB Groups. As the MIB
Group is the quantum of implementation within a MIB, the
implementor of the MIB may elect not to implement these
groups.
(2) The implementor may choose to implement the variables
which present a security risk so that they may not be
written, i.e., the variables are READ-ONLY. This method
still presents a security risk, and is not recommended,
in that the variables, specifically the PPP
Authentication Protocols' variables, may be easily read.
(3) Using SNMPv2, the operator can place the variables into
MIB views which are protected in that the parties which
have access to those MIB views use authentication and
privacy protocols, or the operator may elect to make
these views not accessible to any party. In order to
facilitate this placement, all security-related variables
are placed in separate MIB Tables. This eases the
identification of the necessary MIB View Subtree.
7. References
[1] Rose M., and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based internets", STD 16, RFC
1155, Performance Systems International, Hughes LAN Systems, May
1990.
[2] McCloghrie K., and M. Rose, Editors, "Management Information Base
for Network Management of TCP/IP-based internets", STD 17, RFC
1213, Performance Systems International, March 1991.
[3] Information processing systems - Open Systems Interconnection -
Specification of Abstract Syntax Notation One (ASN.1),
International Organization for Standardization, International
Kastenholz [Page 9]
RFC 1473 PPP/IP MIB June 1993
Standard 8824, December 1987.
[4] Information processing systems - Open Systems Interconnection -
Specification of Basic Encoding Rules for Abstract Notation One
(ASN.1), International Organization for Standardization,
International Standard 8825, December 1987.
[5] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
STD 16, RFC 1212, Performance Systems International, Hughes LAN
Systems, March 1991.
[6] Rose, M., Editor, "A Convention for Defining Traps for use with
the SNMP", RFC 1215, Performance Systems International, March
1991.
[7] McCloghrie, K., "Extensions to the Generic-Interface MIB", RFC
1229, Hughes LAN Systems, Inc., May 1991.
[8] Simpson, W., "The Point-to-Point Protocol for the Transmission of
Multi-protocol Datagrams over Point-to-Point Links, RFC 1331,
Daydreamer, May 1992.
[9] McGregor, G., "The PPP Internet Protocol Control Protocol", RFC
1332, Merit, May 1992.
[10] Baker, F., "Point-to-Point Protocol Extensions for Bridging", RFC
1220, ACC, April 1991.
[11] Lloyd, B., and W. Simpson, "PPP Authentication Protocols", RFC
1334, L&A, Daydreamer, October 1992.
[12] Simpson, W., "PPP Link Quality Monitoring", RFC 1333, Daydreamer,
May 1992.
8. Author's Address
Frank Kastenholz
FTP Software, Inc.
2 High Street
North Andover, Mass 01845 USA
Phone: (508) 685-4000
EMail: kasten@ftp.com
Kastenholz [Page 10]
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