RFC2584 - Definitions of Managed Objects for APPN/HPR in IP Networks

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　　Network Working Group B. Clouston, Ed.
Request for Comments: 2584 Cisco Systems
Category: Standards Track B. Moore, Ed.
IBM Corporation
May 1999

Definitions of Managed Objects
for APPN/HPR in IP Networks

Status of this Memo

This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Abstract

This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it defines objects for monitoring and controlling HPR
(High Performance Routing) network devices which have the capability
to communicate in IP (Internet Protocol) networks. This memo
identifies managed objects for the HPR in IP network communications.

Table of Contents

1. Introduction ........................................... 2
2. The SNMP Network Management Framework .................. 2
3. Overview ............................................... 3
3.1 HPR/IP Values for Objects in the APPN MIB ............. 3
3.2 APPN/HPR in IP Networks MIB structure ................. 4
3.2.1 hprIpMonitoringGroup ................................ 5
3.2.2 hprIpConfigurationGroup ............................. 5
4. Definitions ............................................ 6
5. Security Considerations ................................ 16
6. Intellectual Property .................................. 17
7. Acknowledgments ........................................ 18
8. References ............................................. 18
9. Authors' Addresses ..................................... 20
10. Full Copyright Statement ............................... 21

1. Introduction

This document is a product of the SNA NAU Services MIB Working Group.
It defines a MIB module for managing devices with HPR in IP networks
capabilities.

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC2119 [17].

2. The SNMP Network Management Framework

The SNMP Management Framework presently consists of five major
components:

o An overall architecture, described in RFC2271 [1].

o Mechanisms for describing and naming objects and events for the
purpose of management. The first version of this Structure of
Management Information (SMI) is called SMIv1 and described in
STD 16, RFC1155 [2], STD 16, RFC1212 [3] and RFC1215 [4]. The
second version, called SMIv2, is described in STD 58, RFC2478
[5], RFC2579 [6] and RFC2580 [7].

o Message protocols for transferring management information. The
first version of the SNMP message protocol is called SNMPv1 and
described in STD 15, RFC1157 [8]. A second version of the SNMP
message protocol, which is not an Internet standards track
protocol, is called SNMPv2c and described in RFC1901 [9] and
RFC1906 [10]. The third version of the message protocol is
called SNMPv3 and described in RFC1906 [10], RFC2272 [11] and
RFC2274 [12].

o Protocol operations for accessing management information. The
first set of protocol operations and associated PDU formats is
described in STD 15, RFC1157 [8]. A second set of protocol
operations and associated PDU formats is described in RFC1905
[13].

o A set of fundamental applications described in RFC2273 [14] and
the view-based access control mechanism described in RFC2275
[15].

Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. Objects in the MIB are
defined using the mechanisms defined in the SMI.

This memo specifies a MIB module that is compliant to the SMIv2. A
MIB conforming to the SMIv1 can be produced through the appropriate
translations. The resulting translated MIB must be semantically
equivalent, except where objects or events are omitted because no
translation is possible (use of Counter64). Some machine readable
information in SMIv2 will be converted into textual descriptions in
SMIv1 during the translation process. However, this loss of machine
readable information is not considered to change the semantics of the
MIB.

3. Overview

This document identifies a set of objects for monitoring the
configuration and active characteristics of devices with HPR in IP
network capabilities. HPR is an enhancement to the Advanced Peer-
to-Peer Network (APPN) architecture that provides fast data routing
and improved session reliability. APPN is the aspect of Systems
Network Architecture (SNA) that supports peer-to-peer networking.
APPN/HPR in IP Networks is a further enhancement to the APPN/HPR
architecture, described in RFC2353 [18]. It provides a method with
which APPN/HPR nodes can communicate in IP networks.

APPN management information is defined by the APPN MIB [19]. HPR
management information is defined by the HPR MIB, RFC2238 [20].

Highlights of the management functions supported by the APPN/HPR in
IP Networks MIB module include the following:

o A count of UDP packets sent with each type of APPN traffic on
HPR/IP links.

o Monitoring and setting configuration parameters for the mappings
between APPN traffic types on Type of Service (TOS) Precedence
settings in the IP header. Note that the TOS Precedence
settings have been redefined in RFC2474 [21] as the first three
bits of the differentiated services code point (DSCP).

This MIB module does not support:

o Configuration of IP addresses used for APPN ports or link
stations.

3.1. HPR/IP Values for Objects in the APPN MIB

Ports and link stations are the APPN device's interface to the data
link control (DLC), which provides the physical transport, or to
another protocol, such as IP. The APPN MIB identifies ports and link
stations using IP as the transport with the following objects:

o appnPortDlcType

o appnLsDlcType

o appnLsStatusDlcType

These objects all have the syntax IANAifType, and the value 126,
defined as "IP (for APPN HPR in IP networks)" shall be returned when
they identify an HPR/IP port or link station.

The IP address used for the port or link station is returned in the
following objects:

o appnPortDlcLocalAddr

o appnLsLocalAddr

o appnLsRemoteAddr

o appnLsStatusLocalAddr

o appnLsStatusRemoteAddr

These objects have the syntax DisplayableDlcAddress, defined in the
APPN MIB as a textual convention to represent the address as an octet
string of ASCII characters.

The following two objects return object identifiers that tie port and
link table entries in the APPN MIB to lower-layer MIB entries:

o appnPortSpecific

o appnLsSpecific

Both objects should return a RowPointer to the ifEntry in the agent's
ifTable for the physical interface associated with the local IP
address for the port. If the agent implements the IP-MIB (RFC2011),
this association between the IP address and the physical interface
will be represented in the ipNetToMediaTable.

3.2. APPN/HPR in IP Networks MIB Structure

The APPN/HPR in IP Networks MIB module contains two groups of
objects:

o hprIpMonitoringGroup - an object for counting outgoing HPR/IP
traffic for each APPN traffic type

o hprIpConfigurationGroup - objects to represent TOS Precedence to
APPN traffic type mappings

These groups are described below in more detail.

3.2.1. hprIpMonitoringGroup

The hprIpMonitoringGroup group consists of the hprIpActiveLsTable.
This table is indexed by the link station name and traffic type, and
contains a counter for the number of UDP packets sent on a link
station for that traffic type.

3.2.2. hprIpConfigurationGroup

The hprIpMonitoringGroup group consists of the following objects and
tables:

1) hprIpAppnPortTable

This table supports reading and setting the default mapping between
APPN traffic types and TOS Precedence settings for all link stations
using a port. This mapping may be overridden for individual link
stations or individual connection networks.

2) hprIpLsTable

This table supports reading and setting the mappings between APPN
traffic types and TOS Precedence settings for an individual link
station and APPN traffic type. If there is no entry in this table
for a given link station and traffic type, then that link station
inherits its mapping from its port.

3) hprIpCnTable

This table supports reading and setting the mapping between APPN
traffic types and TOS Precedence settings for an individual
connection network and traffic type. If there is no entry in this
table for a given connection network and traffic type, then that
connection network inherits its mapping from its port.

4. Definitions

HPR-IP-MIB DEFINITIONS ::= BEGIN

IMPORTS
MODULE-IDENTITY,OBJECT-TYPE, Counter32
FROM SNMPv2-SMI
DisplayString, RowStatus, TEXTUAL-CONVENTION
FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP
FROM SNMPv2-CONF
SnaControlPointName
FROM APPN-MIB
hprObjects, hprCompliances, hprGroups
FROM HPR-MIB ;

hprIp MODULE-IDENTITY
LAST-UPDATED "9809240000Z" -- September 24, 1998
ORGANIZATION "IETF SNA NAU MIB WG / AIW APPN MIBs SIG"
CONTACT-INFO
"
Bob Clouston
Cisco Systems
7025 Kit Creek Road
P.O. Box 14987
Research Triangle Park, NC 27709, USA
Tel: 1 919 472 2333
E-mail: clouston@cisco.com

Bob Moore
IBM Corporation
4205 S. Miami Boulevard
BRQA/501
P.O. Box 12195
Research Triangle Park, NC 27709, USA
Tel: 1 919 254 4436
E-mail: remoore@us.ibm.com
"
DESCRIPTION
"The MIB module for HPR over IP. This module contains two
groups:

- the HPR over IP Monitoring Group provides a count of the UDP
packets sent by a link station for each APPN traffic type.

- the HPR over IP Configuration Group provides for reading and
setting the mappings between APPN traffic types and TOS
Precedence settings in the IP header. These mappings are

configured at the APPN port level, and are inherited by the
APPN connection networks and link stations associated with an
APPN port. A port-level mapping can, however, be overridden
for a particular connection network or link station."
REVISION "9809240000Z" -- September 24, 1998
DESCRIPTION
"Initial version, Published as RFC2584"

::= { hprObjects 5 }

-- *********************************************************************
-- Textual Conventions
-- *********************************************************************
AppnTrafficType ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"APPN traffic type. The first four values correspond
to APPN transmission priorities (network, high, medium and
low), while the fifth is used for both LLC commands (XID,
TEST, DISC, and DM) and function-routed NLPs (XID_DONE_RQ
and XID_DONE_RSP)."

SYNTAX INTEGER { low (1),
medium (2),
high (3),
network (4),
llcAndFnRoutedNlp (5) }

AppnTOSPrecedence ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"A DisplayString representing the setting of the three TOS
Precedence bits in the IP Type of Service field for this APPN
traffic type. The HPR over IP architecture specifies the
following default mapping:

APPN traffic type IP TOS Precedence bits
------------------ ----------------------
Network 110
High 100
Medium 010
Low 001
LLC commands, etc. 110
"

SYNTAX DisplayString (SIZE(3))

-- *******************************************************************

-- hprObjects OBJECT IDENTIFIER ::= { hprMIB 1 }
-- *******************************************************************

-- *******************************************************************
-- HPR over IP Monitoring Group
--
-- This group contains a single table, the hprIsActiveLsTable,
-- providing a count of UDP packets sent with each type of
-- APPN traffic on each active link supporting HPR over IP.
-- *******************************************************************
hprIpActiveLsTable OBJECT-TYPE
SYNTAX SEQUENCE OF HprIpActiveLsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The HPR/IP active link station table. This table provides
counts of the number of UDP packets sent for each APPN
traffic type."

::= { hprIp 1 }

hprIpActiveLsEntry OBJECT-TYPE
SYNTAX HprIpActiveLsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry of the HPR/IP link station table."

INDEX { hprIpActiveLsLsName,
hprIpActiveLsAppnTrafficType }

::= { hprIpActiveLsTable 1 }

HprIpActiveLsEntry ::= SEQUENCE {
hprIpActiveLsLsName DisplayString,
hprIpActiveLsAppnTrafficType AppnTrafficType,
hprIpActiveLsUdpPackets Counter32 }

hprIpActiveLsLsName OBJECT-TYPE
SYNTAX DisplayString (SIZE (1..10))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Administratively assigned name for the link station. If this
object has the same value as the appnLsName in the APPN MIB,
then the two objects are referring to the same APPN link
station."

::= { hprIpActiveLsEntry 1 }

hprIpActiveLsAppnTrafficType OBJECT-TYPE
SYNTAX AppnTrafficType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"APPN traffic type being sent through the link station."

::= { hprIpActiveLsEntry 2 }

hprIpActiveLsUdpPackets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The count of outgoing UDP packets carrying this type of APPN
traffic. A discontinuity in the counter is indicated by the
appnLsCounterDisconTime object in the APPN MIB."

::= { hprIpActiveLsEntry 3 }

-- *******************************************************************
-- HPR over IP Configuration Group
--
-- This group contains three tables for reading and setting the
-- mapping between APPN traffic types and values for the TOS
-- Precedence bits in the IP header. hprIpAppnPortTOSPrecedence
-- represents the APPN port-level mapping. This mapping can be
-- overridden for an individual link station or an individual
-- connection network via, respectively, the hprIpLsTOSPrecedence
-- and the hprIpCnTOSPrecedence objects.
-- *******************************************************************

hprIpAppnPortTable OBJECT-TYPE
SYNTAX SEQUENCE OF HprIpAppnPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The HPR/IP APPN port table. This table supports reading and
setting the mapping between APPN traffic types and TOS
Precedence settings for all the link stations at this APPN
port. This mapping can be overridden for an individual link
station or an individual connection network via, respectively,
the hprIpLsTOSPrecedence and the hprIpCnTOSPrecedence objects."

::= { hprIp 2 }

hprIpAppnPortEntry OBJECT-TYPE
SYNTAX HprIpAppnPortEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry of the HPR/IP APPN port table. Entries exist for
every APPN port defined to support HPR over IP."

INDEX { hprIpAppnPortName,
hprIpAppnPortAppnTrafficType }

::= { hprIpAppnPortTable 1 }

HprIpAppnPortEntry ::= SEQUENCE {
hprIpAppnPortName DisplayString,
hprIpAppnPortAppnTrafficType AppnTrafficType,
hprIpAppnPortTOSPrecedence AppnTOSPrecedence }

hprIpAppnPortName OBJECT-TYPE
SYNTAX DisplayString (SIZE (1..10))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Administratively assigned name for this APPN port. If this
object has the same value as the appnPortName in the APPN MIB,
then the two objects are referring to the same APPN port."

::= { hprIpAppnPortEntry 1 }

hprIpAppnPortAppnTrafficType OBJECT-TYPE
SYNTAX AppnTrafficType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"APPN traffic type sent through the port."

::= { hprIpAppnPortEntry 2 }

hprIpAppnPortTOSPrecedence OBJECT-TYPE
SYNTAX AppnTOSPrecedence
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"A setting for the three TOS Precedence bits in the IP Type of
Service field for this APPN traffic type.

When this value is changed via a Set operation, the new setting
for the TOS Precedence bits takes effect immediately, rather

than waiting for some event such as reinitialization of the
port or of the APPN node itself."

::= { hprIpAppnPortEntry 3 }

-- *******************************************************************
hprIpLsTable OBJECT-TYPE
SYNTAX SEQUENCE OF HprIpLsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The HPR/IP link station table. Values for TOS Precedence at
the link station level override those at the level of the
containing port. If there is no entry in this table for a
given link station, then that link station inherits its TOS
Precedence values from its port."

::= { hprIp 3 }

hprIpLsEntry OBJECT-TYPE
SYNTAX HprIpLsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry of the HPR/IP link station table."

INDEX { hprIpLsLsName,
hprIpLsAppnTrafficType }

::= { hprIpLsTable 1 }

HprIpLsEntry ::= SEQUENCE {
hprIpLsLsName DisplayString,
hprIpLsAppnTrafficType AppnTrafficType,
hprIpLsTOSPrecedence AppnTOSPrecedence,
hprIpLsRowStatus RowStatus }

hprIpLsLsName OBJECT-TYPE
SYNTAX DisplayString (SIZE (1..10))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Administratively assigned name for the link station. If this
object has the same value as the appnLsName in the APPN MIB,
then the two objects are referring to the same APPN link
station."

::= { hprIpLsEntry 1 }

hprIpLsAppnTrafficType OBJECT-TYPE
SYNTAX AppnTrafficType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"APPN traffic type sent through the link station."

::= { hprIpLsEntry 2 }

hprIpLsTOSPrecedence OBJECT-TYPE
SYNTAX AppnTOSPrecedence
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A setting for the three TOS Precedence bits in the IP Type of
Service field for this APPN traffic type.

When this value is changed via a Set operation, the new setting
for the TOS Precedence bits takes effect immediately, rather
than waiting for some event such as reinitialization of the
port or of the APPN node itself."

::= { hprIpLsEntry 3 }

hprIpLsRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object allows entries to be created and deleted in the
hprIpLsTable. As soon as an entry becomes active, the mapping
between APPN traffic types and TOS Precedence settings that it
specifies becomes effective.

The value of the other accessible object in this entry,
hprIpLsTOSPrecedence, can be changed via a Set operation when
this object's value is active(1).

An entry in this table is deleted by setting this object to
destroy(6). Deleting an entry in this table causes the
link station to revert to the default TOS Precedence
mapping for its port."

::= { hprIpLsEntry 4 }

-- *******************************************************************
hprIpCnTable OBJECT-TYPE
SYNTAX SEQUENCE OF HprIpCnEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The HPR/IP connection network table. Values for TOS
Precedence at the connection network level override those at
the level of the containing port. If there is no entry in
this table for a given connection network, then that
connection network inherits its TOS Precedence values from
its port.

A node may have connections to a given connection network
through multiple ports. There is no provision in the HPR-IP
architecture for variations in TOS Precedence values for
a single connection network based on the port through which
traffic is flowing to the connection network. Thus an entry
in this table overrides the port-level settings for all the
ports through which the node can reach the connection
network."

::= { hprIp 4 }

hprIpCnEntry OBJECT-TYPE
SYNTAX HprIpCnEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entry of the HPR/IP connection network table."

INDEX { hprIpCnVrnName,
hprIpCnAppnTrafficType }

::= { hprIpCnTable 1 }

HprIpCnEntry ::= SEQUENCE {
hprIpCnVrnName SnaControlPointName,
hprIpCnAppnTrafficType AppnTrafficType,
hprIpCnTOSPrecedence AppnTOSPrecedence,
hprIpCnRowStatus RowStatus }

hprIpCnVrnName OBJECT-TYPE
SYNTAX SnaControlPointName
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"SNA control point name of the virtual routing node (VRN) that

identifies the connection network in the APPN topology
database. If this object has the same value as the appnVrnName
in the APPN MIB, then the two objects are referring
to the same APPN VRN."

::= { hprIpCnEntry 1 }

hprIpCnAppnTrafficType OBJECT-TYPE
SYNTAX AppnTrafficType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"APPN traffic type sent to this connection network."

::= { hprIpCnEntry 2 }

hprIpCnTOSPrecedence OBJECT-TYPE
SYNTAX AppnTOSPrecedence
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A setting for the three TOS Precedence bits in the IP Type of
Service field for this APPN traffic type. This setting applies
to all traffic sent to this connection network by this node,
regardless of the port through which the traffic is sent.

When this value is changed via a Set operation, the new setting
for the TOS Precedence bits takes effect immediately, rather
than waiting for some event such as reinitialization of a
port or of the APPN node itself."
::= { hprIpCnEntry 3 }

hprIpCnRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object allows entries to be created and deleted in the
hprIpCnTable. As soon as an entry becomes active, the mapping
between APPN traffic types and TOS Precedence settings that it
specifies becomes effective.

The value of the other accessible object in this entry,
hprIpCnTOSPrecedence, can be changed via a Set operation when
this object's value is active(1).

An entry in this table is deleted by setting this object to
destroy(6). Deleting an entry in this table causes the

connection network to revert to the default TOS Precedence
mapping for each port through which it is accessed."

::= { hprIpCnEntry 4 }

-- *******************************************************************
-- Conformance Statement
-- *******************************************************************
-- Definitions imported from the HPR MIB:
-- hprConformance OBJECT IDENTIFIER ::= { hprMIB 2 }
-- hprCompliances OBJECT IDENTIFIER ::= { hprConformance 1 }
-- hprGroups OBJECT IDENTIFIER ::= { hprConformance 2 }

-- Compliance statements
hprIpCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for the HPR over IP MIB module."
MODULE -- this module

-- Conditionally mandatory groups
GROUP hprIpMonitoringGroup
DESCRIPTION
"The hprIpMonitoringGroup is mandatory for APPN implementations
supporting HPR over IP."

GROUP hprIpConfigurationGroup
DESCRIPTION
"The hprIpConfigurationGroup is mandatory for APPN
implementations supporting HPR over IP. It may, however,
be implemented as a collection of read-only objects."

OBJECT hprIpAppnPortTOSPrecedence
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT hprIpLsTOSPrecedence
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT hprIpLsRowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT hprIpCnTOSPrecedence
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

OBJECT hprIpCnRowStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."

::= { hprCompliances 2 }

-- Group definitions

hprIpMonitoringGroup OBJECT-GROUP
OBJECTS { hprIpActiveLsUdpPackets }
STATUS current
DESCRIPTION
"An object for counting outgoing HPR/IP traffic for each APPN
traffic type."

::= { hprGroups 5 }

hprIpConfigurationGroup OBJECT-GROUP
OBJECTS { hprIpAppnPortTOSPrecedence,
hprIpLsTOSPrecedence,
hprIpLsRowStatus,
hprIpCnTOSPrecedence,
hprIpCnRowStatus }
STATUS current
DESCRIPTION
"A collection of HPR/IP objects representing the mappings
between APPN traffic types and TOS Precedence bits at the APPN
port, APPN link station, and APPN connection network levels."

::= { hprGroups 6 }

END

5. Security Considerations

Certain management information defined in this MIB may be considered
sensitive in some network environments. Therefore, authentication of
received SNMP requests and controlled access to management
information SHOULD be employed in such environments. An
authentication protocol is defined in [12]. A protocol for access
control is defined in [15]. It is a customer responsibility to
properly set up access control for MIB access.

None of the read-only objects in this MIB reports a password, user
data, or anything else that is particularly sensitive. Some
enterprises view their network configuration itself, as well as
information about network usage and performance, as corporate assets;
such enterprises may wish to restrict SNMP access to most of the
objects in the MIB.

The one read-write and four read-create objects in the MIB can affect
network operations; it is recommended that SNMP access to these
objects be restricted. The five objects are:

o hprIpPortTOSPrecedence: Setting this object immediately changes
the mapping for all link stations using this port which do not
have an entry to override the port value. Improper mappings may
cause delays or disruptions in the network. For example, if
APPN traffic type 'High' is mapped to IP TOS Precedence bits '
001', network control traffic will have the same TOS precedence
as bulk data traffic. This may cause delays with session
initializations, and timeouts on control sessions that could
cause network outages.

o hprIpLsTOSPrecedence: Setting this object has the potential for
delay or disruption for this link station as described above
with hprIpPortTOSPrecedence.

o hprIpLsRowStatus: Setting this object to delete(6) causes this
link station to revert to the default TOS Precedence mapping for
its port. The customized mapping for this link station will no
longer be in effect.

o hprIpCnTOSPrecedence: Setting this object has the potential for
delay or disruption for this links created for this connection
network as described above with hprIpPortTOSPrecedence.

o hprIpCnRowStatus: Setting this object to delete(6) causes links
created for this connection network to revert to the default TOS
Precedence mapping for its port. The customized mapping for
this connection network will no longer be in effect.

6. Intellectual Property

The IETF takes no position regarding the validity or scope of any
intellectual property or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; neither does it represent that it
has made any effort to identify any such rights. Information on the
IETF's procedures with respect to rights in standards-track and

standards-related documentation can be found in BCP-11 [16]. Copies
of claims of rights made available for publication and any assurances
of licenses to be made available, or the result of an attempt made to
obtain a general license or permission for the use of such
proprietary rights by implementers or users of this specification can
be obtained from the IETF Secretariat.

The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights which may cover technology that may be required to practice
this standard. Please address the information to the IETF Executive
Director.

7. Acknowledgments

This MIB module is the product of the IETF SNA NAU MIB WG and the AIW
APPN/HPR MIBs SIG. The editors would like to thank Katie Lee, IBM
Corporation, for her work in creating the original version of this
MIB.

8. References

[1] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for
Describing SNMP Management Frameworks", RFC2271, January 1998

[2] Rose, M. and K. McCloghrie, "Structure and Identification of
Management Information for TCP/IP-based Internets", STD 16, RFC
1155, May 1990.

[3] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
RFC1212, March 1991.

[4] Rose, M., "A Convention for Defining Traps for use with the
SNMP", RFC1215, March 1991.

[5] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Structure of
Management Information Version 2 (SMIv2)", STD 58, RFC2578,
April 1999.

[6] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Textual
Conventions for SMIv2", STD 58, RFC2579, April 1999.

[7] McCloghrie, K., Perkins, D. and J. Schoenwaelder, "Conformance
Statements for SMIv2", STD 58, RFC2580, April 1999.

[8] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
Network Management Protocol", STD 15, RFC1157, May 1990.

[9] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
"Introduction to Community-based SNMPv2", RFC1901, January
1996.

[10] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Transport
Mappings for Version 2 of the Simple Network Management Protocol
(SNMPv2)", RFC1906, January 1996.

[11] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message
Processing and Dispatching for the Simple Network Management
Protocol (SNMP)", RFC2272, January 1998.

[12] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM)
for version 3 of the Simple Network Management Protocol
(SNMPv3)", RFC2274, January 1998.

[13] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
Operations for Version 2 of the Simple Network Management
Protocol (SNMPv2)", RFC1905, January 1996.

[14] Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications", RFC
2273, January 1998.

[15] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
Control Model (VACM) for the Simple Network Management Protocol
(SNMP)", RFC2275, January 1998.

[16] Hovey, R. and S. Bradner, "The Organizations Involved in the
IETF Standards Process", BCP 11, RFC2028, October 1996.

[17] Bradner, S., "Key words for use in RFCs to Indicate Requirement
Levels", BCP 14, RFC2119, March 1997.

[18] Dudley, G, "APPN/HPR in IP Networks", RFC2353, May 1998.

[19] Clouston, B. and B. Moore, "Definition of Managed Objects for
APPN", RFC2455, November 1998.

[20] Clouston, B. and B. Moore, "Definitions of Managed Objects for
HPR", RFC2238, May 1997.

[21] Nichols, K., Blake, S., Baker, F. and D. Black, "Definition of
the Differentiated Services Field (DS Field) in the IPv4 and
IPv6 Headers", RFC2474, December 1998.

9. Authors' Addresses

Bob Clouston
Cisco Systems
7025 Kit Creek Road
P.O. Box 14987
Research Triangle Park, NC 27709, USA

Phone: +1 919 472 2333
EMail: clouston@cisco.com

Robert Moore
Dept. BRQA/Bldg. 501/G114
IBM Corporation
P.O.Box 12195
3039 Cornwallis
Research Triangle Park, NC 27709, USA

Phone: +1 919 254 4436
EMail: remoore@us.ibm.com

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