dot1dTpPortInFrames
Counter,
dot1dTpPortOutFrames
Counter,
dot1dTpPortInDiscards
Counter
}
dot1dTpPort OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The port number of the port for which this entry
contains Transparent bridging management
information."
::= { dot1dTpPortEntry 1 }
-- It would be nice if we could use ifMtu as the size of the
-- largest INFO field, but we can't because ifMtu is defined
-- to be the size that the (inter-)network layer can use which
-- can differ from the MAC layer (especially if several layers
-- of encapsulation are used).
dot1dTpPortMaxInfo OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The maximum size of the INFO (non-MAC) field that
this port will receive or transmit."
::= { dot1dTpPortEntry 2 }
dot1dTpPortInFrames OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of frames that have been received by
this port from its segment. Note that a frame
received on the interface corresponding to this
port is only counted by this object if and only if
it is for a protocol being processed by the local
bridging function."
REFERENCE
"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"
::= { dot1dTpPortEntry 3 }
dot1dTpPortOutFrames OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of frames that have been transmitted
by this port to its segment. Note that a frame
transmitted on the interface corresponding to this
port is only counted by this object if and only if
it is for a protocol being processed by the local
bridging function."
REFERENCE
"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"
::= { dot1dTpPortEntry 4 }
dot1dTpPortInDiscards OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Count of valid frames received which were
discarded (i.e., filtered) by the Forwarding
Process."
REFERENCE
"P802.1d/D9, July 14, 1989: Section 6.6.1.1.3"
::= { dot1dTpPortEntry 5 }
-- The Static (Destination-Address Filtering) Database
-- Implementation of this group is optional.
dot1dStaticTable OBJECT-TYPE
SYNTAX SEQUENCE OF Dot1dStaticEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"A table containing filtering information
configured into the bridge by (local or network)
management specifying the set of ports to which
frames received from specific ports and containing
specific destination addresses are allowed to be
forwarded. The value of zero in this table as the
port number from which frames with a specific
destination address are received, is used to
specify all ports for which there is no specific
entry in this table for that particular
destination address. Entries are valid for
unicast and for group/broadcast addresses."
REFERENCE
"P802.1d/D9, July 14, 1989: Section 6.7.2"
::= { dot1dStatic 1 }
dot1dStaticEntry OBJECT-TYPE
SYNTAX Dot1dStaticEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"Filtering information configured into the bridge
by (local or network) management specifying the
set of ports to which frames received from a
specific port and containing a specific
destination address are allowed to be forwarded."
REFERENCE
"P802.1d/D9, July 14,1989: Section 6.7.2"
INDEX { dot1dStaticAddress, dot1dStaticReceivePort }
::= { dot1dStaticTable 1 }
Dot1dStaticEntry ::=
SEQUENCE {
dot1dStaticAddress
MacAddress,
dot1dStaticReceivePort
INTEGER,
dot1dStaticAllowedToGoTo
OCTET STRING,
dot1dStaticStatus
INTEGER
}
dot1dStaticAddress OBJECT-TYPE
SYNTAX MacAddress
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The destination MAC address in a frame to which
this entry's filtering information applies. This
object can take the value of a unicast address, a
group address or the broadcast address."
REFERENCE
"P802.1d/D9, July 14, 1989: Section 3.9.1, 3.9.2"
::= { dot1dStaticEntry 1 }
dot1dStaticReceivePort OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-write
STATUS mandatory
DESCRIPTION
"Either the value '0', or the port number of the
port from which a frame must be received in order
for this entry's filtering information to apply.
A value of zero indicates that this entry applies
on all ports of the bridge for which there is no
other applicable entry."
::= { dot1dStaticEntry 2 }
dot1dStaticAllowedToGoTo OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-write
STATUS mandatory
DESCRIPTION
"The set of ports to which frames received from a
specific port and destined for a specific MAC
address, are allowed to be forwarded. Each octet
within the value of this object specifies a set of
eight ports, with the first octet specifying ports
1 through 8, the second octet specifying ports 9
through 16, etc. Within each octet, the most
significant bit represents the lowest numbered
port, and the least significant bit represents the
highest numbered port. Thus, each port of the
bridge is represented by a single bit within the
value of this object. If that bit has a value of
'1' then that port is included in the set of
ports; the port is not included if its bit has a
value of '0'. (Note that the setting of the bit
corresponding to the port from which a frame is
received is irrelevant.)"
::= { dot1dStaticEntry 3 }
dot1dStaticStatus OBJECT-TYPE
SYNTAX INTEGER {
other(1),
invalid(2),
permanent(3),
deleteOnReset(4),
deleteOnTimeout(5)
}
ACCESS read-write
STATUS mandatory
DESCRIPTION
"This object indicates the status of this entry.
other(1) - this entry is currently in use but
the conditions under which it will
remain so are different from each of the
following values.
invalid(2) - writing this value to the object
removes the corresponding entry.
permanent(3) - this entry is currently in use
and will remain so after the next reset
of the bridge.
deleteOnReset(4) - this entry is currently in
use and will remain so until the next
reset of the bridge.
deleteOnTimeout(5) - this entry is currently
in use and will remain so until it is
aged out."
::= { dot1dStaticEntry 4 }
-- Traps for use by Bridges
-- Traps for the Spanning Tree Protocol
newRoot TRAP-TYPE
ENTERPRISE dot1dBridge
DESCRIPTION
"The newRoot trap indicates that the sending agent
has become the new root of the Spanning Tree; the
trap is sent by a bridge soon after its election
as the new root, e.g., upon expiration of the
Topology Change Timer immediately subsequent to
its election."
::= 1
topologyChange TRAP-TYPE
ENTERPRISE dot1dBridge
DESCRIPTION
"A topologyChange trap is sent by a bridge when
any of its configured ports transitions from the
Learning state to the Forwarding state, or from
the Forwarding state to the Blocking state. The
trap is not sent if a newRoot trap is sent for the
same transition."
::= 2
END
6. Acknowledgments
This document was produced on behalf of the Bridge Sub-Working Group
of the SNMP Working Group of the Internet Engineering Task Force.
Over the course of its deliberations, the working group received four
separate documents for consideration as the basis for its work. The
first was submitted by Stan Froyd of Advanced Computer
Communications; the second by Richard Fox of SynOptics; the third by
Eric Decker of cisco Inc. and Keith McCloghrie of Hughes LAN Systems;
and the fourth by Paul Langille and Anil Rijsinghani of Digital
Equipment Corp. After considering the submissions, the working group
chose to proceed with a document formed as a conjunction of the
latter two submissions. This document is the result.
The authors wish to thank the members of the Bridge Working Group for
their many comments and suggestions which improved this effort. In
particular, Fred Baker (chairman of the working group) of ACC, Steve
Sherry of Xyplex, and Frank Kastenholz of Clearpoint Research Corp.
Others members of the Bridge Working Group who contributed to this
effort are:
Bill Anderson, Mitre
Karl Auerbach, Epilogue
Fred Baker, ACC (chair)
Terry Bradley, Wellfleet
Ted Brunner, Bellcore
Jeffrey Buffum, Apollo
Chris ChioTasso, Fibronics
Anthony Chung, HLS
Chuck Davin, MIT-LCS
Andy Davis, Spider
Eric Decker, cisco
Nadya El-Afandi, Network Systems
Gary Ellis,HP/Apollo
Richard Fox, SynOptics
Stan Froyd, ACC
Frank Kastenholz, Clearpoint Research
Shirnshon Kaufman,
Jim Kinder, Fibercom
Cheryl Krupczak,NCR
Paul Langille, Digital
Peter Lin,Vitalink
Keith McCloghrie, HLS
Donna McMaster, SynOptics
Dave Perkins, 3Com
Jim Reinstedler, Ungermann Bass
Anil Rijsinghani, Digital
Mark Schaefer, David Systems
Steve Sherry, Xyplex
Bob Stewart, Xyplex
Emil Sturniolo,
Kevin Synott, Retix
Ian Thomas, Chipcom
Maurice Turcott, Racal
Fei Xu,
7. References
[1] Cerf, V., "IAB Recommendations for the Development of Internet
Network Management Standards", RFC1052, NRI, April 1988.
[2] Cerf, V., "Report of the Second Ad Hoc Network Management Review
Group", RFC1109, NRI, August 1989.
[3] Rose M., and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based internets", RFC1155,
Performance Systems International, Hughes LAN Systems, May 1990.
[4] McCloghrie K., and M. Rose, "Management Information Base for
Network Management of TCP/IP-based internets", RFC1156, Hughes
LAN Systems, Performance Systems International, May 1990.
[5] Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
Network Management Protocol", RFC1157, SNMP Research,
Performance Systems International, Performance Systems
International, MIT Laboratory for Computer Science, May 1990.
[6] McCloghrie K., and M. Rose, Editors, "Management Information Base
for Network Management of TCP/IP-based internets", RFC1213,
Performance Systems International, March 1991.
[7] Information processing systems - Open Systems Interconnection -
Specification of Abstract Syntax Notation One (ASN.1),
International Organization for Standardization, International
Standard 8824, December 1987.
[8] 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.
[9] Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
RFC1212, Performance Systems International, Hughes LAN Systems,
March 1991.
[10] Rose, M., Editor, "A Convention for Defining Traps for use with
the SNMP", RFC1215, Performance Systems International, March
1991.
[11] ANSI/IEEE Draft P802.1d/D9 MAC Bridges, "IEEE Project 802 Local
and Metropolitan Area Networks", July 14, 1989.
[12] I.B.M. Token Ring Architecture Reference.
[13] ISO DIS 10038 MAC Bridges.
[14] ANSI/IEEE P802.1x/P802.5x, "Proposed Draft Local Area Network
Standard -- MAC Bridges, Source Routing Supplement", IEEE Project
802, September 1990.
[15] ANSI/IEEE 802.1y, "Source Routing Tutorial for End System
Operation", September 1990.
8. Security Considerations
Security issues are not discussed in this memo.
9. Authors' Addresses
Eric B. Decker
cisco Systems, Inc.
1525 O'Brien Dr.
Menlo Park, CA 94025
Phone: (415) 326-1941
Email: cire@cisco.com
Paul Langille
Digital Equipment Corporation
Digital Drive, MK02-2/K03
Merrimack, NH 03054
Phone: (603) 884-4045
EMail: langille@edwin.enet.dec.com
Anil Rijsinghani
Digital Equipment Corporation
153 Taylor St.
Littleton, MA 01460
Phone: (508)952-3520
EMail: anil@levers.enet.dec.com
Keith McCloghrie
Hughes LAN Systems
1225 Charleston Road
Mountain View, CA 94043
Phone: (415) 966-7934
EMail: kzm@hls.com