Network Working Group B. Haberman
Request for Comments: 3019 Nortel Networks
Category: Standards Track R. Worzella
IBM
January 2001
Network Working Group B. Haberman
Request for Comments: 3019 Nortel Networks
Category: Standards Track R. Worzella
IBM
January 2001
IP Version 6 Management Information Base for The Multicast Listener Discovery Protocol
多播侦听器发现协议的IP版本6管理信息库
Status of this Memo
本备忘录的状况
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.
本文件规定了互联网社区的互联网标准跟踪协议，并要求进行讨论和提出改进建议。有关本协议的标准化状态和状态，请参考当前版本的“互联网官方协议标准”（STD 1）。本备忘录的分发不受限制。
Copyright Notice
版权公告
Copyright (C) The Internet Society (2001). All Rights Reserved.
版权所有（C）互联网协会（2001年）。版权所有。
Abstract
摘要
This document defines a portion of the Management Information Base (MIB) for use with network management protocols in Internet Protocol Version 6 internets. Specifically, this document is the MIB module that defines managed objects for implementations of the Multicast Listener Discovery Protocol [RFC2710].
本文档定义了管理信息库（MIB）的一部分，用于Internet协议版本6 Internet中的网络管理协议。具体地说，本文档是MIB模块，它为多播侦听器发现协议[RFC2710]的实现定义了托管对象。
Terminology
术语
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].
本文件中的关键词“必须”、“不得”、“必需”、“应”、“不应”、“应”、“不应”、“建议”、“可”和“可选”应按照[RFC2119]中所述进行解释。
The SNMP Management Framework presently consists of five major components:
SNMP管理框架目前由五个主要组件组成：
An overall architecture, described in RFC 2571 [RFC2571].
RFC 2571[RFC2571]中描述的总体架构。
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,
为管理目的描述和命名对象和事件的机制。这种管理信息结构（SMI）的第一个版本称为SMIv1，并在STD 16中进行了描述，
RFC 1155 [RFC1155], STD 16, RFC 1212 [RFC1212] and RFC 1215 [RFC1215]. The second version, called SMIv2, is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].
RFC 1155[RFC1155]，STD 16，RFC 1212[RFC1212]和RFC 1215[RFC1215]。第二个版本称为SMIv2，在STD 58、RFC 2578[RFC2578]、STD 58、RFC 2579[RFC2579]和STD 58、RFC 2580[RFC2580]中进行了描述。
Message protocols for transferring management information. The first version of the SNMP message protocol is called SNMPv1 and described in STD 15, RFC 1157 [RFC1157]. A second version of the SNMP message protocol, which is not an Internet standards track protocol, is called SNMPv2c and described in RFC 1901 [RFC1901] and RFC 1906 [RFC1906]. The third version of the message protocol is called SNMPv3 and described in RFC 1906 [RFC1906], RFC 2572 [RFC2572] and RFC 2574 [RFC2574].
用于传输管理信息的消息协议。SNMP消息协议的第一个版本称为SNMPv1，在STD 15 RFC 1157[RFC1157]中进行了描述。SNMP消息协议的第二个版本不是Internet标准跟踪协议，称为SNMPv2c，在RFC 1901[RFC1901]和RFC 1906[RFC1906]中进行了描述。消息协议的第三个版本称为SNMPv3，在RFC 1906[RFC1906]、RFC 2572[RFC2572]和RFC 2574[RFC2574]中进行了描述。
Protocol operations for accessing management information. The first set of protocol operations and associated PDU formats is described in STD 15, RFC 1157 [RFC1157]. A second set of protocol operations and associated PDU formats is described in RFC 1905 [RFC1905].
访问管理信息的协议操作。STD 15、RFC 1157[RFC1157]中描述了第一组协议操作和相关PDU格式。RFC 1905[RFC1905]中描述了第二组协议操作和相关PDU格式。
A set of fundamental applications described in RFC 2573 [RFC2573] and the view-based access control mechanism described in RFC 2575 [RFC2575].
RFC 2573[RFC2573]中描述的一组基本应用程序和RFC 2575[RFC2575]中描述的基于视图的访问控制机制。
A more detailed introduction to the current SNMP Management Framework can be found in RFC 2570 [RFC2570].
有关当前SNMP管理框架的更详细介绍，请参见RFC 2570[RFC2570]。
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.
托管对象通过虚拟信息存储（称为管理信息库或MIB）进行访问。MIB中的对象是使用SMI中定义的机制定义的。
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.
此备忘录指定了符合SMIv2的MIB模块。通过适当的翻译，可以生成符合SMIv1的MIB。生成的已翻译MIB必须在语义上等效，除非由于无法翻译而省略了对象或事件（使用计数器64）。在翻译过程中，SMIv2中的一些机器可读信息将转换为SMIv1中的文本描述。然而，机器可读信息的这种丢失不被认为是改变MIB的语义。
This MIB module contains two tables:
此MIB模块包含两个表：
1. The MLD Interface Table, which contains one row for each interface on which MLD is enabled.
1. MLD接口表，其中包含启用MLD的每个接口的一行。
2. The MLD Cache Table which contains one row for each IPv6 Multicast group for which there are members on a particular interface.
2. MLD缓存表，其中包含特定接口上有成员的每个IPv6多播组的一行。
Both tables are intended to be implemented by hosts and routers. Some objects in each table apply to routers only.
这两个表都是由主机和路由器实现的。每个表中的某些对象仅适用于路由器。
IPV6-MLD-MIB DEFINITIONS ::= BEGIN
IPV6-MLD-MIB DEFINITIONS ::= BEGIN
IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Counter32, Gauge32, Unsigned32, TimeTicks, mib-2 FROM SNMPv2-SMI RowStatus, TruthValue FROM SNMPv2-TC InetAddressIPv6 FROM INET-ADDRESS-MIB InterfaceIndex, InterfaceIndexOrZero FROM IF-MIB MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF;
从SNMPv2 SMI RowStatus导入模块标识、对象类型、计数器32、仪表32、无符号32、时间刻度、mib-2，从SNMPv2 TC InetAddressIPv6从INET-ADDRESS-mib InterfaceIndex导入TruthValue，从IF-mib MODULE-COMPLIANCE导入InterfaceIndexOrZero，从SNMPv2 CONF导入对象组；
mldMIB MODULE-IDENTITY LAST-UPDATED "200101250000Z" -- 25 Jan 2001 ORGANIZATION "IETF IPNGWG Working Group." CONTACT-INFO " Brian Haberman Nortel Networks 4309 Emperor Blvd. Durham, NC 27703 USA
mldMIB模块标识最后更新“200101250000Z”-2001年1月25日组织“IETF IPNGWG工作组”。联系信息“Brian Haberman Nortel Networks 4309皇帝大道，达勒姆，北卡罗来纳州27703美国
Phone: +1 919 992 4439
e-mail: haberman@nortelnetworks.com"
DESCRIPTION
"The MIB module for MLD Management."
REVISION "200101250000Z" -- 25 Jan 2001
DESCRIPTION
"Initial version, published as RFC 3019."
::= { mib-2 91 }
Phone: +1 919 992 4439
e-mail: haberman@nortelnetworks.com"
DESCRIPTION
"The MIB module for MLD Management."
REVISION "200101250000Z" -- 25 Jan 2001
DESCRIPTION
"Initial version, published as RFC 3019."
::= { mib-2 91 }
mldMIBObjects OBJECT IDENTIFIER ::= { mldMIB 1 }
--
-- The MLD Interface Table
--
mldMIBObjects OBJECT IDENTIFIER ::= { mldMIB 1 }
--
-- The MLD Interface Table
--
mldInterfaceTable OBJECT-TYPE SYNTAX SEQUENCE OF MldInterfaceEntry
MldInterfaceEntry的mldInterfaceTable对象类型语法序列
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the interfaces on which
MLD is enabled."
::= { mldMIBObjects 1 }
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the interfaces on which
MLD is enabled."
::= { mldMIBObjects 1 }
mldInterfaceEntry OBJECT-TYPE
SYNTAX MldInterfaceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) representing an interface on
which MLD is enabled."
INDEX { mldInterfaceIfIndex }
::= { mldInterfaceTable 1 }
mldInterfaceEntry OBJECT-TYPE
SYNTAX MldInterfaceEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) representing an interface on
which MLD is enabled."
INDEX { mldInterfaceIfIndex }
::= { mldInterfaceTable 1 }
MldInterfaceEntry ::= SEQUENCE {
mldInterfaceIfIndex InterfaceIndex,
mldInterfaceQueryInterval Unsigned32,
mldInterfaceStatus RowStatus,
mldInterfaceVersion Unsigned32,
mldInterfaceQuerier InetAddressIPv6,
mldInterfaceQueryMaxResponseDelay Unsigned32,
mldInterfaceJoins Counter32,
mldInterfaceGroups Gauge32,
mldInterfaceRobustness Unsigned32,
mldInterfaceLastListenQueryIntvl Unsigned32,
mldInterfaceProxyIfIndex InterfaceIndexOrZero,
mldInterfaceQuerierUpTime TimeTicks,
mldInterfaceQuerierExpiryTime TimeTicks
}
MldInterfaceEntry ::= SEQUENCE {
mldInterfaceIfIndex InterfaceIndex,
mldInterfaceQueryInterval Unsigned32,
mldInterfaceStatus RowStatus,
mldInterfaceVersion Unsigned32,
mldInterfaceQuerier InetAddressIPv6,
mldInterfaceQueryMaxResponseDelay Unsigned32,
mldInterfaceJoins Counter32,
mldInterfaceGroups Gauge32,
mldInterfaceRobustness Unsigned32,
mldInterfaceLastListenQueryIntvl Unsigned32,
mldInterfaceProxyIfIndex InterfaceIndexOrZero,
mldInterfaceQuerierUpTime TimeTicks,
mldInterfaceQuerierExpiryTime TimeTicks
}
mldInterfaceIfIndex OBJECT-TYPE
mldInterfaceIfIndex对象类型
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The internetwork-layer interface value of the interface
for which MLD is enabled."
::= { mldInterfaceEntry 1 }
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The internetwork-layer interface value of the interface
for which MLD is enabled."
::= { mldInterfaceEntry 1 }
mldInterfaceQueryInterval OBJECT-TYPE SYNTAX Unsigned32 UNITS "seconds" MAX-ACCESS read-create STATUS current
mldInterfaceQueryInterval对象类型语法无符号32单位“秒”最大访问读取创建状态当前
DESCRIPTION
"The frequency at which MLD Host-Query packets are
transmitted on this interface."
DEFVAL { 125 }
::= { mldInterfaceEntry 2 }
DESCRIPTION
"The frequency at which MLD Host-Query packets are
transmitted on this interface."
DEFVAL { 125 }
::= { mldInterfaceEntry 2 }
mldInterfaceStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The activation of a row enables MLD on the interface.
The destruction of a row disables MLD on the interface."
::= { mldInterfaceEntry 3 }
mldInterfaceStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The activation of a row enables MLD on the interface.
The destruction of a row disables MLD on the interface."
::= { mldInterfaceEntry 3 }
mldInterfaceVersion OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The version of MLD which is running on this interface.
This object is a place holder to allow for new versions
of MLD to be introduced. Version 1 of MLD is defined
in RFC 2710."
DEFVAL { 1 }
::= { mldInterfaceEntry 4 }
mldInterfaceVersion OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The version of MLD which is running on this interface.
This object is a place holder to allow for new versions
of MLD to be introduced. Version 1 of MLD is defined
in RFC 2710."
DEFVAL { 1 }
::= { mldInterfaceEntry 4 }
mldInterfaceQuerier OBJECT-TYPE
SYNTAX InetAddressIPv6 (SIZE (16))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address of the MLD Querier on the IPv6 subnet to
which this interface is attached."
::= { mldInterfaceEntry 5 }
mldInterfaceQuerier OBJECT-TYPE
SYNTAX InetAddressIPv6 (SIZE (16))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address of the MLD Querier on the IPv6 subnet to
which this interface is attached."
::= { mldInterfaceEntry 5 }
mldInterfaceQueryMaxResponseDelay OBJECT-TYPE
SYNTAX Unsigned32
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum query response time advertised in MLD
queries on this interface."
DEFVAL { 10 }
::= { mldInterfaceEntry 6 }
mldInterfaceQueryMaxResponseDelay OBJECT-TYPE
SYNTAX Unsigned32
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum query response time advertised in MLD
queries on this interface."
DEFVAL { 10 }
::= { mldInterfaceEntry 6 }
mldInterfaceJoins OBJECT-TYPE
mldInterfaceJoins对象类型
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times a group membership has been added on
this interface; that is, the number of times an entry for
this interface has been added to the Cache Table. This
object gives an indication of the amount of MLD activity
over time."
::= { mldInterfaceEntry 7 }
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of times a group membership has been added on
this interface; that is, the number of times an entry for
this interface has been added to the Cache Table. This
object gives an indication of the amount of MLD activity
over time."
::= { mldInterfaceEntry 7 }
mldInterfaceGroups OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current number of entries for this interface in the
Cache Table."
::= { mldInterfaceEntry 8 }
mldInterfaceGroups OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current number of entries for this interface in the
Cache Table."
::= { mldInterfaceEntry 8 }
mldInterfaceRobustness OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The Robustness Variable allows tuning for the expected
packet loss on a subnet. If a subnet is expected to be
lossy, the Robustness Variable may be increased. MLD is
robust to (Robustness Variable-1) packet losses. The
discussion of the Robustness Variable is in Section 7.1
of RFC 2710."
DEFVAL { 2 }
::= { mldInterfaceEntry 9 }
mldInterfaceRobustness OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The Robustness Variable allows tuning for the expected
packet loss on a subnet. If a subnet is expected to be
lossy, the Robustness Variable may be increased. MLD is
robust to (Robustness Variable-1) packet losses. The
discussion of the Robustness Variable is in Section 7.1
of RFC 2710."
DEFVAL { 2 }
::= { mldInterfaceEntry 9 }
mldInterfaceLastListenQueryIntvl OBJECT-TYPE SYNTAX Unsigned32 UNITS "seconds" MAX-ACCESS read-create STATUS current DESCRIPTION "The Last Member Query Interval is the Max Response Delay inserted into Group-Specific Queries sent in response to Leave Group messages, and is also the amount of time between Group-Specific Query messages. This value may be tuned to modify the leave latency of the network. A reduced value results in reduced time to detect the loss of the last member of a group." DEFVAL { 1 }
mldInterfaceLastListenQueryIntvl对象类型语法无符号32单位“秒”最大访问读取创建状态当前说明“最后一个成员查询间隔是为响应离开组消息而发送的组特定查询中插入的最大响应延迟，也是组特定查询消息之间的时间间隔。可以调整此值以修改网络的离开延迟。减少的值会减少检测组中最后一个成员丢失的时间。“deffal{1}
::= { mldInterfaceEntry 10 }
::= { mldInterfaceEntry 10 }
mldInterfaceProxyIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Some devices implement a form of MLD proxying whereby
memberships learned on the interface represented by this
row, cause MLD Multicast Listener Reports to be sent on
the internetwork-layer interface identified by this
object. Such a device would implement mldRouterMIBGroup
only on its router interfaces (those interfaces with
non-zero mldInterfaceProxyIfIndex). Typically, the
value of this object is 0, indicating that no proxying
is being done."
DEFVAL { 0 }
::= { mldInterfaceEntry 11 }
mldInterfaceProxyIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Some devices implement a form of MLD proxying whereby
memberships learned on the interface represented by this
row, cause MLD Multicast Listener Reports to be sent on
the internetwork-layer interface identified by this
object. Such a device would implement mldRouterMIBGroup
only on its router interfaces (those interfaces with
non-zero mldInterfaceProxyIfIndex). Typically, the
value of this object is 0, indicating that no proxying
is being done."
DEFVAL { 0 }
::= { mldInterfaceEntry 11 }
mldInterfaceQuerierUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since mldInterfaceQuerier was last changed."
::= { mldInterfaceEntry 12 }
mldInterfaceQuerierUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time since mldInterfaceQuerier was last changed."
::= { mldInterfaceEntry 12 }
mldInterfaceQuerierExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time remaining before the Other Querier Present
Timer expires. If the local system is the querier,
the value of this object is zero."
::= { mldInterfaceEntry 13 }
mldInterfaceQuerierExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time remaining before the Other Querier Present
Timer expires. If the local system is the querier,
the value of this object is zero."
::= { mldInterfaceEntry 13 }
-- -- The MLD Cache Table --
----MLD缓存表--
mldCacheTable OBJECT-TYPE SYNTAX SEQUENCE OF MldCacheEntry MAX-ACCESS not-accessible STATUS current DESCRIPTION "The (conceptual) table listing the IPv6 multicast
mldCacheTable对象类型语法序列MldCacheEntry MAX-ACCESS不可访问状态当前描述“列出IPv6多播的（概念）表
groups for which there are members on a particular
interface."
::= { mldMIBObjects 2 }
groups for which there are members on a particular
interface."
::= { mldMIBObjects 2 }
mldCacheEntry OBJECT-TYPE
SYNTAX MldCacheEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the mldCacheTable."
INDEX { mldCacheAddress, mldCacheIfIndex }
::= { mldCacheTable 1 }
mldCacheEntry OBJECT-TYPE
SYNTAX MldCacheEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the mldCacheTable."
INDEX { mldCacheAddress, mldCacheIfIndex }
::= { mldCacheTable 1 }
MldCacheEntry ::= SEQUENCE {
mldCacheAddress InetAddressIPv6,
mldCacheIfIndex InterfaceIndex,
mldCacheSelf TruthValue,
mldCacheLastReporter InetAddressIPv6,
mldCacheUpTime TimeTicks,
mldCacheExpiryTime TimeTicks,
mldCacheStatus RowStatus
}
MldCacheEntry ::= SEQUENCE {
mldCacheAddress InetAddressIPv6,
mldCacheIfIndex InterfaceIndex,
mldCacheSelf TruthValue,
mldCacheLastReporter InetAddressIPv6,
mldCacheUpTime TimeTicks,
mldCacheExpiryTime TimeTicks,
mldCacheStatus RowStatus
}
mldCacheAddress OBJECT-TYPE
SYNTAX InetAddressIPv6 (SIZE (16))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IPv6 multicast group address for which this entry
contains information."
::= { mldCacheEntry 1 }
mldCacheAddress OBJECT-TYPE
SYNTAX InetAddressIPv6 (SIZE (16))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IPv6 multicast group address for which this entry
contains information."
::= { mldCacheEntry 1 }
mldCacheIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The internetwork-layer interface for which this entry
contains information for an IPv6 multicast group
address."
::= { mldCacheEntry 2 }
mldCacheIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The internetwork-layer interface for which this entry
contains information for an IPv6 multicast group
address."
::= { mldCacheEntry 2 }
mldCacheSelf OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-create STATUS current DESCRIPTION "An indication of whether the local system is a member of
mldCacheSelf对象类型语法TruthValue MAX-ACCESS read create STATUS current DESCRIPTION“本地系统是否为
this group address on this interface."
DEFVAL { true }
::= { mldCacheEntry 3 }
this group address on this interface."
DEFVAL { true }
::= { mldCacheEntry 3 }
mldCacheLastReporter OBJECT-TYPE
SYNTAX InetAddressIPv6 (SIZE (16))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IPv6 address of the source of the last membership
report received for this IPv6 Multicast group address on
this interface. If no membership report has been
received, this object has the value 0::0."
::= { mldCacheEntry 4 }
mldCacheLastReporter OBJECT-TYPE
SYNTAX InetAddressIPv6 (SIZE (16))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The IPv6 address of the source of the last membership
report received for this IPv6 Multicast group address on
this interface. If no membership report has been
received, this object has the value 0::0."
::= { mldCacheEntry 4 }
mldCacheUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time elapsed since this entry was created."
::= { mldCacheEntry 5 }
mldCacheUpTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time elapsed since this entry was created."
::= { mldCacheEntry 5 }
mldCacheExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum amount of time remaining before this entry
will be aged out. A value of 0 indicates that the entry
is only present because mldCacheSelf is true and that if
the router left the group, this entry would be aged out
immediately. Note that some implementations may process
Membership Reports from the local system in the same way
as reports from other hosts, so a value of 0 is not
required."
::= { mldCacheEntry 6 }
mldCacheExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum amount of time remaining before this entry
will be aged out. A value of 0 indicates that the entry
is only present because mldCacheSelf is true and that if
the router left the group, this entry would be aged out
immediately. Note that some implementations may process
Membership Reports from the local system in the same way
as reports from other hosts, so a value of 0 is not
required."
::= { mldCacheEntry 6 }
mldCacheStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row, by which new entries may be
created, or existing entries deleted from this table."
::= { mldCacheEntry 7 }
mldCacheStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row, by which new entries may be
created, or existing entries deleted from this table."
::= { mldCacheEntry 7 }
-- conformance information
--一致性信息
mldMIBConformance
OBJECT IDENTIFIER ::= { mldMIB 2 }
mldMIBCompliances
OBJECT IDENTIFIER ::= { mldMIBConformance 1 }
mldMIBGroups
OBJECT IDENTIFIER ::= { mldMIBConformance 2 }
mldMIBConformance
OBJECT IDENTIFIER ::= { mldMIB 2 }
mldMIBCompliances
OBJECT IDENTIFIER ::= { mldMIBConformance 1 }
mldMIBGroups
OBJECT IDENTIFIER ::= { mldMIBConformance 2 }
-- compliance statements
--合规声明
mldHostMIBCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for hosts running MLD and implementing the MLD MIB." MODULE -- this module MANDATORY-GROUPS { mldBaseMIBGroup, mldHostMIBGroup }
MLDHOSTMIB COMPLIANCE MODULE-COMPLIANCE STATUS当前描述“运行MLD并实现MLD MIB的主机的符合性声明”。模块--此模块为必填项-组{mldBaseMIBGroup，mldHostMIBGroup}
OBJECT mldInterfaceStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required."
对象mldInterfaceStatus MIN-ACCESS只读描述“不需要写访问。”
::= { mldMIBCompliances 1 }
::= { mldMIBCompliances 1 }
mldRouterMIBCompliance MODULE-COMPLIANCE STATUS current DESCRIPTION "The compliance statement for routers running MLD and implementing the MLD MIB." MODULE -- this module MANDATORY-GROUPS { mldBaseMIBGroup, mldRouterMIBGroup }
MLDROOTERMIB COMPLIANCE MODULE-COMPLIANCE STATUS当前描述“运行MLD并实现MLD MIB的路由器的符合性声明。”模块——此模块为必填模块-GROUPS{mldBaseMIBGroup，MLDROOTERMIBGOUP}
OBJECT mldInterfaceStatus MIN-ACCESS read-only DESCRIPTION "Write access is not required."
对象mldInterfaceStatus MIN-ACCESS只读描述“不需要写访问。”
::= { mldMIBCompliances 2 }
::= { mldMIBCompliances 2 }
-- units of conformance
--一致性单位
mldBaseMIBGroup OBJECT-GROUP
OBJECTS { mldCacheSelf,
mldCacheStatus, mldInterfaceStatus
}
STATUS current
DESCRIPTION
"The basic collection of objects providing management of
MLD. The mldBaseMIBGroup is designed to allow for the
manager creation and deletion of MLD cache entries."
::= { mldMIBGroups 1 }
mldBaseMIBGroup OBJECT-GROUP
OBJECTS { mldCacheSelf,
mldCacheStatus, mldInterfaceStatus
}
STATUS current
DESCRIPTION
"The basic collection of objects providing management of
MLD. The mldBaseMIBGroup is designed to allow for the
manager creation and deletion of MLD cache entries."
::= { mldMIBGroups 1 }
mldRouterMIBGroup OBJECT-GROUP
OBJECTS { mldCacheUpTime, mldCacheExpiryTime,
mldInterfaceQueryInterval,
mldInterfaceJoins, mldInterfaceGroups,
mldCacheLastReporter,
mldInterfaceQuerierUpTime,
mldInterfaceQuerierExpiryTime,
mldInterfaceQuerier,
mldInterfaceVersion,
mldInterfaceQueryMaxResponseDelay,
mldInterfaceRobustness,
mldInterfaceLastListenQueryIntvl
}
STATUS current
DESCRIPTION
"A collection of additional objects for management of MLD
in routers."
::= { mldMIBGroups 2 }
mldRouterMIBGroup OBJECT-GROUP
OBJECTS { mldCacheUpTime, mldCacheExpiryTime,
mldInterfaceQueryInterval,
mldInterfaceJoins, mldInterfaceGroups,
mldCacheLastReporter,
mldInterfaceQuerierUpTime,
mldInterfaceQuerierExpiryTime,
mldInterfaceQuerier,
mldInterfaceVersion,
mldInterfaceQueryMaxResponseDelay,
mldInterfaceRobustness,
mldInterfaceLastListenQueryIntvl
}
STATUS current
DESCRIPTION
"A collection of additional objects for management of MLD
in routers."
::= { mldMIBGroups 2 }
mldHostMIBGroup OBJECT-GROUP
OBJECTS { mldInterfaceQuerier
}
STATUS current
DESCRIPTION
"A collection of additional objects for management of MLD
in hosts."
::= { mldMIBGroups 3 }
mldHostMIBGroup OBJECT-GROUP
OBJECTS { mldInterfaceQuerier
}
STATUS current
DESCRIPTION
"A collection of additional objects for management of MLD
in hosts."
::= { mldMIBGroups 3 }
mldProxyMIBGroup OBJECT-GROUP OBJECTS { mldInterfaceProxyIfIndex } STATUS current DESCRIPTION "A collection of additional objects for management of MLD proxy devices."
MLDPROXYMIBGOUP对象组对象{MLDInterfaceProxyiIndex}状态当前描述“用于管理MLD代理设备的其他对象的集合。”
::= { mldMIBGroups 4 }
::= { mldMIBGroups 4 }
END
终止
Security Considerations
安全考虑
This MIB contains readable objects whose values provide information related to multicast sessions. Some of these objects could contain sensitive information. In particular, the mldCacheSelf and mldCacheLastReporter could be used to identify machines which are listening to a given group address. There are also a number of objects that have a MAX-ACCESS clause of read-write and/or read-create, which allow an administrator to configure MLD in the router.
此MIB包含可读对象，其值提供与多播会话相关的信息。其中一些对象可能包含敏感信息。特别是，mldCacheSelf和mldCacheLastReporter可用于识别正在侦听给定组地址的计算机。还有许多对象具有读写和/或读创建的MAX-ACCESS子句，允许管理员在路由器中配置MLD。
While unauthorized access to the readable objects is relatively innocuous, unauthorized access to the write-able objects could cause a denial of service. Hence, the support of SET operations in a non-secure environment without proper protection can have a negative effect on network operations.
虽然对可读对象的未授权访问相对无害，但对可写对象的未授权访问可能会导致拒绝服务。因此，在没有适当保护的非安全环境中支持SET操作可能会对网络操作产生负面影响。
SNMPv1 by itself is such an insecure environment. Even if the network itself is secure (for example by using IPSec), even then, there is no control as to who on the network is allowed to access and SET (change/create/delete) the objects in this MIB.
SNMPv1本身就是这样一个不安全的环境。即使网络本身是安全的（例如通过使用IPSec），即使如此，也无法控制网络上的谁可以访问和设置（更改/创建/删除）此MIB中的对象。
It is recommended that the implementers consider the security features as provided by the SNMPv3 framework. Specifically, the use of the User-based Security Model RFC 2574 [RFC2574] and the View-based Access Control Model RFC 2575 [RFC2575] is recommended.
建议实施者考虑SNMPv3框架提供的安全特性。具体而言，建议使用基于用户的安全模型RFC 2574[RFC2574]和基于视图的访问控制模型RFC 2575[RFC2575]。
It is then a customer/user responsibility to ensure that the SNMP entity giving access to this MIB, is properly configured to give access to those objects only to those principals (users) that have legitimate rights to access them.
然后，客户/用户有责任确保授予此MIB访问权限的SNMP实体正确配置为仅授予具有合法访问权限的主体（用户）访问这些对象的权限。
Acknowledgements
致谢
This MIB module is based on the IGMP MIB authored by Keith McCloghrie, Dino Farinacci, and Dave Thaler. It was updated based on feedback from the IPNGWG working group, Bert Wijnen, Peder Norgaard, and extensive comments from Juergen Schoenwaelder.
此MIB模块基于基思·麦克洛赫里、迪诺·法里纳奇和戴夫·泰勒编写的IGMP MIB。它是根据IPNGWG工作组、Bert Wijnen、Peder Norgaard的反馈以及Juergen Schoenwaeld的广泛评论进行更新的。
References
工具书类
[RFC2710] Deering, S., Fenner, W. and B. Haberman, "Multicast Listener Discovery (MLD) for IPv6", RFC 2710, October 1999.
[RFC2710]Deering，S.，Fenner，W.和B.Haberman，“IPv6的多播侦听器发现（MLD）”，RFC 2710，1999年10月。
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2119]Bradner，S.，“RFC中用于表示需求水平的关键词”，BCP 14，RFC 2119，1997年3月。
[RFC2571] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for Describing SNMP Management Frameworks", RFC 2571, April 1999.
[RFC2571]Harrington，D.，Presohn，R.和B.Wijnen，“描述SNMP管理框架的体系结构”，RFC 2571，1999年4月。
[RFC1155] Rose, M. and K. McCloghrie, "Structure and Identification of Management Information for TCP/IP-based Internets", STD 16, RFC 1155, May 1990.
[RFC1155]Rose，M.和K.McCloghrie，“基于TCP/IP的互联网管理信息的结构和识别”，STD 16，RFC 1155，1990年5月。
[RFC1212] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16, RFC 1212, March 1991.
[RFC1212]Rose，M.和K.McCloghrie，“简明MIB定义”，STD 16，RFC 1212，1991年3月。
[RFC1215] Rose, M., "A Convention for Defining Traps for use with the SNMP", RFC 1215, March 1991.
[RFC1215]Rose，M.，“定义用于SNMP的陷阱的约定”，RFC1215，1991年3月。
[RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S. Waldbusser, "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[RFC2578]McCloghrie，K.，Perkins，D.，Schoenwaeld，J.，Case，J.，Rose，M.和S.Waldbusser，“管理信息的结构版本2（SMIv2）”，STD 58，RFC 2578，1999年4月。
[RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58, RFC 2579, April 1999.
[RFC2579]McCloghrie，K.，Perkins，D.，Schoenwaeld，J.，Case，J.，Rose，M.和S.Waldbusser，“SMIv2的文本约定”，STD 58，RFC 2579，1999年4月。
[RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose, M. and S. Waldbusser, "Conformance Statements for SMIv2", STD 58, RFC 2580, April 1999.
[RFC2580]McCloghrie，K.，Perkins，D.，Schoenwaeld，J.，Case，J.，Rose，M.和S.Waldbusser，“SMIv2的一致性声明”，STD 58，RFC 25801999年4月。
[RFC1157] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple Network Management Protocol", STD 15, RFC 1157, May 1990.
[RFC1157]Case，J.，Fedor，M.，Schoffstall，M.和J.Davin，“简单网络管理协议”，STD 15，RFC 1157，1990年5月。
[RFC1901] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Introduction to Community-based SNMPv2", RFC 1901, January 1996.
[RFC1901]Case，J.，McCloghrie，K.，Rose，M.和S.Waldbusser，“基于社区的SNMPv2简介”，RFC 19011996年1月。
[RFC1906] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Transport Mappings for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1906, January 1996.
[RFC1906]Case，J.，McCloghrie，K.，Rose，M.和S.Waldbusser，“简单网络管理协议（SNMPv2）版本2的传输映射”，RFC 1906，1996年1月。
[RFC2572] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message Processing and Dispatching for the Simple Network Management Protocol (SNMP)", RFC 2572, April 1999.
[RFC2572]Case，J.，Harrington D.，Presohn R.和B.Wijnen，“简单网络管理协议（SNMP）的消息处理和调度”，RFC 2572，1999年4月。
[RFC2574] Blumenthal, U. and B. Wijnen, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", RFC 2574, April 1999.
[RFC2574]Blumenthal，U.和B.Wijnen，“简单网络管理协议（SNMPv3）第3版基于用户的安全模型（USM）”，RFC 2574，1999年4月。
[RFC1905] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol Operations for Version 2 of the Simple Network Management Protocol (SNMPv2)", RFC 1905, January 1996.
[RFC1905]Case，J.，McCloghrie，K.，Rose，M.和S.Waldbusser，“简单网络管理协议（SNMPv2）版本2的协议操作”，RFC 1905，1996年1月。
[RFC2573] Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications", RFC 2573, April 1999.
[RFC2573]Levi，D.，Meyer，P.和B.Stewart，“SNMPv3应用”，RFC 2573，1999年4月。
[RFC2575] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP)", RFC 2575, April 1999.
[RFC2575]Wijnen，B.，Presohn，R.和K.McCloghrie，“用于简单网络管理协议（SNMP）的基于视图的访问控制模型（VACM）”，RFC 2575，1999年4月。
[RFC2570] Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction to Version 3 of the Internet-standard Network Management Framework", RFC 2570, April 1999.
[RFC2570]Case，J.，Mundy，R.，Partain，D.和B.Stewart，“互联网标准网络管理框架第3版简介”，RFC 25701999年4月。
Authors' Addresses
作者地址
Brian Haberman Nortel Networks 4309 Emperor Blvd. Suite 200 Durham, NC 27703 USA
布莱恩·哈伯曼北电网络公司皇帝大道4309号。美国北卡罗来纳州达勒姆市200号套房，邮编27703
Phone: +1-919-992-4439
EMail: haberman@nortelnetworks.com
Phone: +1-919-992-4439
EMail: haberman@nortelnetworks.com
Randy Worzella IBM Corporation 800 Park Office Drive Research Triangle Park, NC 27709 USA
Randy Worzella IBM Corporation 800美国北卡罗来纳州三角公园办公室大道研究
Phone: +1-919-254-2202
EMail: worzella@us.ibm.com
Phone: +1-919-254-2202
EMail: worzella@us.ibm.com
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完整版权声明
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Acknowledgement
确认
Funding for the RFC Editor function is currently provided by the Internet Society.
RFC编辑功能的资金目前由互联网协会提供。