rfc1474.txt
来自「RFC 的详细文档！」· 文本 代码 · 共 843 行 · 第 1/3 页
TXT
843 行
RFC 1474 PPP/Bridge MIB June 1993
}
pppBridgeMediaMacType OBJECT-TYPE
SYNTAX INTEGER(0..2147483647)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The MAC type for which this entry in the
pppBridgeMediaTable is providing status
information. Valid values for this object are
defined in Section 6.6 MAC Type Support
Selection of RFC1220 (Bridging Point-to-Point
Protocol)."
REFERENCE
"Section 6.6, MAC Type Support Selection, of
RFC1212."
::= { pppBridgeMediaEntry 1 }
pppBridgeMediaLocalStatus OBJECT-TYPE
SYNTAX INTEGER { accept(1), dont-accept(2) }
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Indicates whether the local PPP Bridging
Entity will accept packets of the protocol type
identified in pppBridgeMediaMacType on the PPP
link identified by ifIndex or not. If this
object is accept then any packets of the
indicated MAC type will be received and
properly processed. If this object is dont-
accept then received packets of the indicated
MAC type will not be properly processed."
REFERENCE
"Section 6.6, MAC Type Support Selection, of
RFC1212."
::= { pppBridgeMediaEntry 2 }
pppBridgeMediaRemoteStatus OBJECT-TYPE
SYNTAX INTEGER { accept(1), dont-accept(2) }
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Indicates whether the local PPP Bridging
Entity believes that the remote PPP Bridging
Entity will accept packets of the protocol type
identified in pppBridgeMediaMacType on the PPP
Kastenholz [Page 11]
RFC 1474 PPP/Bridge MIB June 1993
link identified by ifIndex or not."
REFERENCE
"Section 6.6, MAC Type Support Selection, of
RFC1212."
::= { pppBridgeMediaEntry 3 }
--
-- The PPP Bridge Media Configuration Table
--
pppBridgeMediaConfigTable OBJECT-TYPE
SYNTAX SEQUENCE OF PppBridgeMediaConfigEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Table identifying which MAC media types are
enabled for the Bridging NCPs."
::= { pppBridge 4 }
pppBridgeMediaConfigEntry OBJECT-TYPE
SYNTAX PppBridgeMediaConfigEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Status of a specific MAC Type for a specific
PPP Link."
INDEX { ifIndex, pppBridgeMediaConfigMacType }
::= { pppBridgeMediaConfigTable 1 }
PppBridgeMediaConfigEntry ::= SEQUENCE {
pppBridgeMediaConfigMacType
INTEGER,
pppBridgeMediaConfigLocalStatus
INTEGER
}
pppBridgeMediaConfigMacType OBJECT-TYPE
SYNTAX INTEGER(0..2147483647)
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The MAC type for which this entry in the
pppBridgeMediaConfigTable is providing status
information. Valid values for this object are
Kastenholz [Page 12]
RFC 1474 PPP/Bridge MIB June 1993
defined in Section 6.6 MAC Type Support
Selection of RFC1220 (Bridging Point-to-Point
Protocol)."
REFERENCE
"Section 6.6, MAC Type Support Selection, of
RFC1212."
::= { pppBridgeMediaConfigEntry 1 }
pppBridgeMediaConfigLocalStatus OBJECT-TYPE
SYNTAX INTEGER { accept(1), dont-accept(2) }
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Indicates whether the local PPP Bridging
Entity should accept packets of the protocol
type identified in pppBridgeMediaConfigMacType
on the PPP link identified by ifIndex or not.
Setting this object to the value dont-accept
has the affect of invalidating the
corresponding entry in the
pppBridgeMediaConfigTable object. It is an
implementation-specific matter as to whether
the agent removes an invalidated entry from the
table. Accordingly, management stations must be
prepared to receive tabular information from
agents that corresponds to entries not
currently in use. Changing this object will
have effect when the link is next restarted."
REFERENCE
"Section 6.6, MAC Type Support Selection, of
RFC1212."
::= { pppBridgeMediaConfigEntry 2 }
END
6. 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
Glenn McGregor -- Merit
Jesse Walker -- DEC
Chris Gunner -- DEC
Kastenholz [Page 13]
RFC 1474 PPP/Bridge MIB June 1993
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
Standard 8824, December 1987.
[4] Information processing systems - Open Systems Interconnection -
Specification of Basic Encoding Rules for Abstract Notation One
Kastenholz [Page 14]
RFC 1474 PPP/Bridge MIB June 1993
(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 15]
⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?