Network Working Group B. Joshi
Request for Comments: 5240 Infosys Technologies Ltd.
Category: Standards Track R. Bijlani
June 2008
Protocol Independent Multicast (PIM) Bootstrap Router MIB
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.
Abstract
This document defines a portion of the Management Information Base
(MIB) for use with network management protocols in the Internet
community. In particular, it describes managed objects used for
managing the Bootstrap Router (BSR) mechanism for PIM (Protocol
Independent Multicast).
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework . . . . . . . . . . 2
3. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 2
4. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 3
6. Security Considerations . . . . . . . . . . . . . . . . . . . 17
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 19
8. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 19
9. References . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9.1. Normative References . . . . . . . . . . . . . . . . . . . 20
9.2. Informative References . . . . . . . . . . . . . . . . . . 20
Joshi & Bijlani Standards Track [Page 1]RFC 5240 PIM BSR MIB June 2008
1. Introduction
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it describes managed objects used for managing the
Bootstrap Router (BSR) mechanism for PIM [RFC4601], [RFC5059].
This document was created by moving some of the PIM BSR-specific MIB
tables from one of the earlier versions of PIM MIB [RFC5060].
2. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
[RFC2580].
3. Conventions
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 RFC 2119 [RFC2119].
4. Overview
This MIB module contains four tables. The tables are:
1. The Candidate-RP Table, which contains one row for each multicast
group address prefix for which the local router is configured to
advertise itself as a Candidate-RP (C-RP). This table exists on
routers that are configured as Candidate-RP.
2. The Elected BSR RP-Set Table, which contains one row for each
Group-to-RP mapping that was received in C-RP advertisements.
This table exists on a router that is an elected BSR (E-BSR).
3. The Candidate-BSR Table, which contains one row for each
Candidate-BSR configuration for the local router. This table
exists on routers that are configured as Candidate-BSR.
Joshi & Bijlani Standards Track [Page 2]RFC 5240 PIM BSR MIB June 2008
4. The Elected-BSR Table, which contains one row for each elected
BSR. This table exists on a router that is an elected BSR.
This MIB module uses textual conventions defined in the INET-ADDRESS-
MIB [RFC4001].
5. Definitions
PIM-BSR-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE,
NOTIFICATION-TYPE,
mib-2, Unsigned32, TimeTicks FROM SNMPv2-SMI
RowStatus, TruthValue,
StorageType FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP,
NOTIFICATION-GROUP FROM SNMPv2-CONF
InetAddressType,
InetAddressPrefixLength,
InetAddress,
InetZoneIndex FROM INET-ADDRESS-MIB;
pimBsrMIB MODULE-IDENTITY
LAST-UPDATED "200805280000Z" -- 28 May 2008
ORGANIZATION
"IETF Protocol Independent Multicast (PIM) Working Group"
CONTACT-INFO
"Email: pim@ietf.org
WG charter:
http://www.ietf.org/html.charters/pim-charter.html"
DESCRIPTION
"The MIB module for management of the Bootstrap Router
(BSR) mechanism for PIM routers.
Copyright (C) The IETF Trust (2008). This version
of this MIB module is part of RFC 5240; see the RFC
itself for full legal notices."
REVISION "200805280000Z" -- 28 May 2008
DESCRIPTION "Initial version, published as RFC 5240."
::= { mib-2 172 }
--
-- Top-level structure
--
pimBsrNotifications OBJECT IDENTIFIER ::= { pimBsrMIB 0 }
pimBsrObjects OBJECT IDENTIFIER ::= { pimBsrMIB 1 }
Joshi & Bijlani Standards Track [Page 3]RFC 5240 PIM BSR MIB June 2008
--
-- Conformance Information
--
pimBsrConformance OBJECT IDENTIFIER ::= { pimBsrMIB 2 }
pimBsrCompliances OBJECT IDENTIFIER ::= { pimBsrConformance 1 }
pimBsrGroups OBJECT IDENTIFIER ::= { pimBsrConformance 2 }
--
-- The BSR Candidate-RP Table
--
pimBsrCandidateRPTable OBJECT-TYPE
SYNTAX SEQUENCE OF PimBsrCandidateRPEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing the IP multicast group
prefixes for which the local router is to advertise
itself as a Candidate-RP."
::= { pimBsrObjects 1 }
pimBsrCandidateRPEntry OBJECT-TYPE
SYNTAX PimBsrCandidateRPEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the
pimBsrCandidateRPTable."
INDEX { pimBsrCandidateRPAddressType,
pimBsrCandidateRPAddress,
pimBsrCandidateRPGroupAddress,
pimBsrCandidateRPGroupPrefixLength }
::= { pimBsrCandidateRPTable 1 }
PimBsrCandidateRPEntry ::= SEQUENCE {
pimBsrCandidateRPAddressType InetAddressType,
pimBsrCandidateRPAddress InetAddress,
pimBsrCandidateRPGroupAddress InetAddress,
pimBsrCandidateRPGroupPrefixLength InetAddressPrefixLength,
pimBsrCandidateRPBidir TruthValue,
pimBsrCandidateRPAdvTimer TimeTicks,
pimBsrCandidateRPPriority Unsigned32,
pimBsrCandidateRPAdvInterval Unsigned32,
pimBsrCandidateRPHoldtime Unsigned32,
pimBsrCandidateRPStatus RowStatus,
pimBsrCandidateRPStorageType StorageType
}
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pimBsrCandidateRPAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Inet address type of the Candidate-RP."
::= { pimBsrCandidateRPEntry 1 }
pimBsrCandidateRPAddress OBJECT-TYPE
SYNTAX InetAddress (SIZE (4|8|16|20))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (unicast) address that will be advertised as a
Candidate-RP. The InetAddressType is given by the
pimBsrCandidateRPAddressType object."
::= { pimBsrCandidateRPEntry 2 }
pimBsrCandidateRPGroupAddress OBJECT-TYPE
SYNTAX InetAddress (SIZE (4|8|16|20))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP multicast group address that, when combined with
the corresponding value of
pimBsrCandidateRPGroupPrefixLength, identifies a group
prefix for which the local router will advertise itself
as a Candidate-RP. The InetAddressType is given by the
pimBsrCandidateRPAddressType object.
This address object is only significant up to
pimBsrCandidateRPGroupPrefixLength bits. The
remainder of the address bits are zero. This is
especially important for this field, which is part of
the index of this entry. Any non-zero bits would
signify an entirely different entry."
::= { pimBsrCandidateRPEntry 3 }
pimBsrCandidateRPGroupPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The multicast group address mask that, when combined
with the corresponding value of
pimBsrCandidateRPGroupAddress, identifies a group prefix
for which the local router will advertise itself as a
Candidate-RP. The InetAddressType is given by the
Joshi & Bijlani Standards Track [Page 5]RFC 5240 PIM BSR MIB June 2008
pimBsrCandidateRPAddressType object."
::= { pimBsrCandidateRPEntry 4 }
pimBsrCandidateRPBidir OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If this object is set to TRUE, this group range is
advertised with this RP as a BIDIR-PIM group range. If
it is set to FALSE, it is advertised as a PIM-SM group
range."
DEFVAL { false }
::= { pimBsrCandidateRPEntry 5 }
pimBsrCandidateRPAdvTimer OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time remaining before the local router next sends
a Candidate-RP-Advertisement to the elected BSR for
this zone."
::= { pimBsrCandidateRPEntry 6 }
pimBsrCandidateRPPriority OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The priority for this Candidate-RP advertised in
Candidate-RP-Advertisements."
REFERENCE "RFC 5059, section 3.2"
DEFVAL { 192 }
::= { pimBsrCandidateRPEntry 7 }
pimBsrCandidateRPAdvInterval OBJECT-TYPE
SYNTAX Unsigned32 (1..26214)
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A Candidate-RP generates Candidate-RP-Advertisements
periodically. This object represents the time interval
in seconds between two consecutive advertisements."
REFERENCE "RFC 5059, sections 3.2 and 5"
DEFVAL { 60 }
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::= { pimBsrCandidateRPEntry 8 }
pimBsrCandidateRPHoldtime OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Holdtime for this Candidate-RP. The amount of time (in
seconds) this Candidate-RP entry is valid.
This object's value can be zero only when this C-RP is
shutting down."
REFERENCE "RFC 5059, section 4.2"
DEFVAL { 150 }
::= { pimBsrCandidateRPEntry 9 }
pimBsrCandidateRPStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row, by which new entries may be
created, or old entries deleted from this table.
This status object can be set to active(1) without
setting any other columnar objects in this entry.
All writable objects in this entry can be modified
when the status of this entry is active(1)."
::= { pimBsrCandidateRPEntry 10 }
pimBsrCandidateRPStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The storage type for this row. Rows having the value
'permanent' need not allow write-access to any columnar
objects in the row."
DEFVAL { nonVolatile }
::= { pimBsrCandidateRPEntry 11 }
--
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-- The BSR Elected BSR RP-Set Table
--
pimBsrElectedBSRRPSetTable OBJECT-TYPE
SYNTAX SEQUENCE OF PimBsrElectedBSRRPSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The (conceptual) table listing BSR-specific information
about PIM group mappings learned via C-RP advertisements
or created locally using configurations. This table is
maintained only on the Elected BSR.
An Elected BSR uses this table to create Bootstrap
messages after applying a local policy to include some
or all of the group mappings in this table."
::= { pimBsrObjects 2 }
pimBsrElectedBSRRPSetEntry OBJECT-TYPE
SYNTAX PimBsrElectedBSRRPSetEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the
pimBsrElectedBSRRPSetTable."
INDEX { pimBsrElectedBSRGrpMappingAddrType,
pimBsrElectedBSRGrpMappingGrpAddr,
pimBsrElectedBSRGrpMappingGrpPrefixLen,
pimBsrElectedBSRGrpMappingRPAddr }
::= { pimBsrElectedBSRRPSetTable 1 }
PimBsrElectedBSRRPSetEntry ::= SEQUENCE {
pimBsrElectedBSRGrpMappingAddrType InetAddressType,
pimBsrElectedBSRGrpMappingGrpAddr InetAddress,
pimBsrElectedBSRGrpMappingGrpPrefixLen InetAddressPrefixLength,
pimBsrElectedBSRGrpMappingRPAddr InetAddress,
pimBsrElectedBSRRPSetPriority Unsigned32,
pimBsrElectedBSRRPSetHoldtime Unsigned32,
pimBsrElectedBSRRPSetExpiryTime TimeTicks,
pimBsrElectedBSRRPSetGrpBidir TruthValue
}
pimBsrElectedBSRGrpMappingAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"The Inet address type of the IP multicast group
prefix."
::= { pimBsrElectedBSRRPSetEntry 2 }
pimBsrElectedBSRGrpMappingGrpAddr OBJECT-TYPE
SYNTAX InetAddress (SIZE (4|8|16|20))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP multicast group address that, when combined
with pimBsrElectedBSRGrpMappingGrpPrefixLen, gives the
group prefix for this mapping. The InetAddressType is
given by the pimBsrElectedBSRGrpMappingAddrType object.
This address object is only significant up to
pimBsrElectedBSRGrpMappingGrpPrefixLen bits. The
remainder of the address bits are zero. This is
especially important for this field, which is part of
the index of this entry. Any non-zero bits would
signify an entirely different entry."
::= { pimBsrElectedBSRRPSetEntry 3 }
pimBsrElectedBSRGrpMappingGrpPrefixLen OBJECT-TYPE
SYNTAX InetAddressPrefixLength (4..128)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The multicast group prefix length that, when combined
with pimBsrElectedBSRGrpMappingGrpAddr, gives the group
prefix for this mapping. The InetAddressType is given by
the pimBsrElectedBSRGrpMappingAddrType object. If
pimBsrElectedBSRGrpMappingAddrType is 'ipv4' or 'ipv4z',
this object must be in the range 4..32. If
pimBsrElectedBSRGrpMappingAddrType is 'ipv6' or 'ipv6z',
this object must be in the range 8..128."
::= { pimBsrElectedBSRRPSetEntry 4 }
pimBsrElectedBSRGrpMappingRPAddr OBJECT-TYPE
SYNTAX InetAddress (SIZE (4|8|16|20))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP address of the RP to be used for groups within
this group prefix. The InetAddressType is given by the
pimBsrElectedBSRGrpMappingAddrType object."
::= { pimBsrElectedBSRRPSetEntry 5 }
pimBsrElectedBSRRPSetPriority OBJECT-TYPE
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SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The priority for RP. Numerically higher values for
this object indicate lower priorities, with the value
zero denoting the highest priority."
REFERENCE "RFC 5059, section 4.1"
::= { pimBsrElectedBSRRPSetEntry 6 }
pimBsrElectedBSRRPSetHoldtime OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The holdtime for RP"
REFERENCE "RFC 5059, section 4.1"
::= { pimBsrElectedBSRRPSetEntry 7 }
pimBsrElectedBSRRPSetExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum time remaining before this entry will be
aged out. The value zero indicates that this entry will
never be aged out."
::= { pimBsrElectedBSRRPSetEntry 8 }
pimBsrElectedBSRRPSetGrpBidir OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If this object is TRUE, this group range with this
RP is a BIDIR-PIM group range. If it is set to FALSE,
it is a PIM-SM group range."
::= { pimBsrElectedBSRRPSetEntry 9 }
--
-- The BSR Candidate-BSR Table
--
pimBsrCandidateBSRTable OBJECT-TYPE
SYNTAX SEQUENCE OF PimBsrCandidateBSREntry
MAX-ACCESS not-accessible
STATUS current
Joshi & Bijlani Standards Track [Page 10]RFC 5240 PIM BSR MIB June 2008
DESCRIPTION
"The (conceptual) table containing Candidate-BSR
configuration for the local router. The table contains
one row for each zone for which the local router is
to advertise itself as a Candidate-BSR."
::= { pimBsrObjects 3 }
pimBsrCandidateBSREntry OBJECT-TYPE
SYNTAX PimBsrCandidateBSREntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the
pimBsrCandidateBSRTable."
INDEX { pimBsrCandidateBSRZoneIndex }
::= { pimBsrCandidateBSRTable 1 }
PimBsrCandidateBSREntry ::= SEQUENCE {
pimBsrCandidateBSRZoneIndex InetZoneIndex,
pimBsrCandidateBSRAddressType InetAddressType,
pimBsrCandidateBSRAddress InetAddress,
pimBsrCandidateBSRPriority Unsigned32,
pimBsrCandidateBSRHashMaskLength Unsigned32,
pimBsrCandidateBSRElectedBSR TruthValue,
pimBsrCandidateBSRBootstrapTimer TimeTicks,
pimBsrCandidateBSRStatus RowStatus,
pimBsrCandidateBSRStorageType StorageType
}
pimBsrCandidateBSRZoneIndex OBJECT-TYPE
SYNTAX InetZoneIndex (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The zone index uniquely identifies the zone on a
device to which this Candidate-BSR is attached. There is
one entry for each zone in ipMcastZoneTable. Scope-level
information for this zone can be extracted from
ipMcastZoneTable in IP Multicast MIB [RFC5132].
Zero is a special value used to request the default zone
for a given scope. Zero is not a valid value for this
object."
::= { pimBsrCandidateBSREntry 1 }
pimBsrCandidateBSRAddressType OBJECT-TYPE
SYNTAX InetAddressType
Joshi & Bijlani Standards Track [Page 11]RFC 5240 PIM BSR MIB June 2008
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The address type of the Candidate-BSR."
::= { pimBsrCandidateBSREntry 2 }
pimBsrCandidateBSRAddress OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The (unicast) address that the local router will
use to advertise itself as a Candidate-BSR. The
InetAddressType is given by the
pimBsrCandidateBSRAddressType object."
::= { pimBsrCandidateBSREntry 3 }
pimBsrCandidateBSRPriority OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The priority value for the local router as a
Candidate-BSR for this zone. Numerically higher
values for this object indicate higher priorities."
DEFVAL { 0 }
::= { pimBsrCandidateBSREntry 4 }
pimBsrCandidateBSRHashMaskLength OBJECT-TYPE
SYNTAX Unsigned32 (0..128)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The hash mask length (used in the RP hash function)
that the local router will advertise in its Bootstrap
messages for this zone. This object defaults
to 30 if pimBsrCandidateBSRAddressType is 'ipv4' or
'ipv4z' , and defaults to 126 if
pimBsrCandidateBSRAddressType is 'ipv6' or 'ipv6z'."
::= { pimBsrCandidateBSREntry 5 }
pimBsrCandidateBSRElectedBSR OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Whether the local router is the elected BSR for this
zone."
Joshi & Bijlani Standards Track [Page 12]RFC 5240 PIM BSR MIB June 2008
::= { pimBsrCandidateBSREntry 6 }
pimBsrCandidateBSRBootstrapTimer OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The time remaining before the local router next
originates a Bootstrap message for this zone.
Value of this object is zero if
pimBsrCandidateBSRElectedBSR is 'FALSE'."
::= { pimBsrCandidateBSREntry 7 }
pimBsrCandidateBSRStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this row, by which new entries may
be created or old entries deleted from this table.
This status object can be set to active(1) without
setting any other columnar objects in this entry.
All writable objects in this entry can be modified
when the status of this entry is active(1)."
::= { pimBsrCandidateBSREntry 8 }
pimBsrCandidateBSRStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The storage type for this row. Rows having the value
'permanent' need not allow write-access to any columnar
objects in the row."
DEFVAL { nonVolatile }
::= { pimBsrCandidateBSREntry 9 }
--
-- The BSR Elected-BSR Table
--
pimBsrElectedBSRTable OBJECT-TYPE
SYNTAX SEQUENCE OF PimBsrElectedBSREntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
Joshi & Bijlani Standards Track [Page 13]RFC 5240 PIM BSR MIB June 2008
"The (conceptual) table containing information about
elected BSRs. The table contains one row for each
zone for which there is an elected BSR."
::= { pimBsrObjects 4 }
pimBsrElectedBSREntry OBJECT-TYPE
SYNTAX PimBsrElectedBSREntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry (conceptual row) in the
pimBsrElectedBSRTable."
INDEX { pimBsrElectedBSRZoneIndex }
::= { pimBsrElectedBSRTable 1 }
PimBsrElectedBSREntry ::= SEQUENCE {
pimBsrElectedBSRZoneIndex InetZoneIndex,
pimBsrElectedBSRAddressType InetAddressType,
pimBsrElectedBSRAddress InetAddress,
pimBsrElectedBSRPriority Unsigned32,
pimBsrElectedBSRHashMaskLength Unsigned32,
pimBsrElectedBSRExpiryTime TimeTicks
}
pimBsrElectedBSRZoneIndex OBJECT-TYPE
SYNTAX InetZoneIndex (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The zone index uniquely identifies the zone on a
device to which this Elected BSR is attached. There
is one entry for each zone in ipMcastZoneTable.
Scope-level information for this zone can be extracted
from ipMcastZoneTable in IP Multicast MIB [RFC5132].
Zero is a special value used to request the default zone
for a given scope. Zero is not a valid value for this
object."
::= { pimBsrElectedBSREntry 1 }
pimBsrElectedBSRAddressType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The address type of the elected BSR."
::= { pimBsrElectedBSREntry 2 }
Joshi & Bijlani Standards Track [Page 14]RFC 5240 PIM BSR MIB June 2008
pimBsrElectedBSRAddress OBJECT-TYPE
SYNTAX InetAddress (SIZE (4|8|16|20))
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The (unicast) address of the elected BSR. The
InetAddressType is given by the
pimBsrElectedBSRAddressType object."
::= { pimBsrElectedBSREntry 3 }
pimBsrElectedBSRPriority OBJECT-TYPE
SYNTAX Unsigned32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The priority value for the elected BSR for this address
type. Numerically higher values for this object indicate
higher priorities."
::= { pimBsrElectedBSREntry 4 }
pimBsrElectedBSRHashMaskLength OBJECT-TYPE
SYNTAX Unsigned32 (0..128)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The hash mask length (used in the RP hash function)
advertised by the elected BSR for this zone."
::= { pimBsrElectedBSREntry 5 }
pimBsrElectedBSRExpiryTime OBJECT-TYPE
SYNTAX TimeTicks
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The minimum time remaining before the elected BSR for
this zone will be declared down."
::= { pimBsrElectedBSREntry 6 }
--
-- PIM BSR Notifications
--
pimBsrElectedBSRLostElection NOTIFICATION-TYPE
OBJECTS { pimBsrElectedBSRAddressType,
pimBsrElectedBSRAddress,
pimBsrElectedBSRPriority }
STATUS current
DESCRIPTION
Joshi & Bijlani Standards Track [Page 15]RFC 5240 PIM BSR MIB June 2008
"A pimBsrElectedBSRLostElection notification should be
generated when current E-BSR lost election to a new
Candidate-BSR. Only an E-BSR should generate this
notification.
This notification is generated when
pimBsrCandidateBSRElectedBSR becomes FALSE."
REFERENCE "RFC 5059, section 3.1"
::= { pimBsrNotifications 1 }
pimBsrCandidateBSRWinElection NOTIFICATION-TYPE
OBJECTS { pimBsrCandidateBSRElectedBSR }
STATUS current
DESCRIPTION
"A pimBsrCandidateBSRWinElection notification should be
generated when a C-BSR wins BSR Election. Only an
E-BSR should generate this notification.
This notification is generated when
pimBsrCandidateBSRElectedBSR becomes TRUE."
REFERENCE "RFC 5059, section 3.1"
::= { pimBsrNotifications 2 }
--
-- Compliance Statements
--
pimBsrCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for PIM routers that implement
the Bootstrap Router (BSR) mechanism."
MODULE -- this module
MANDATORY-GROUPS { pimBsrObjectGroup }
GROUP pimBsrDiagnosticsGroup
DESCRIPTION
"This group is optional."
::= { pimBsrCompliances 1 }
--
-- Units of Conformance
--
pimBsrObjectGroup OBJECT-GROUP
Joshi & Bijlani Standards Track [Page 16]RFC 5240 PIM BSR MIB June 2008
OBJECTS { pimBsrCandidateRPBidir,
pimBsrCandidateRPAdvTimer,
pimBsrCandidateRPPriority,
pimBsrCandidateRPAdvInterval,
pimBsrCandidateRPHoldtime,
pimBsrCandidateRPStatus,
pimBsrCandidateRPStorageType,
pimBsrElectedBSRRPSetPriority,
pimBsrElectedBSRRPSetHoldtime,
pimBsrElectedBSRRPSetExpiryTime,
pimBsrElectedBSRRPSetGrpBidir,
pimBsrCandidateBSRAddress,
pimBsrCandidateBSRAddressType,
pimBsrCandidateBSRPriority,
pimBsrCandidateBSRHashMaskLength,
pimBsrCandidateBSRElectedBSR,
pimBsrCandidateBSRBootstrapTimer,
pimBsrCandidateBSRStatus,
pimBsrCandidateBSRStorageType,
pimBsrElectedBSRAddress,
pimBsrElectedBSRAddressType,
pimBsrElectedBSRPriority,
pimBsrElectedBSRHashMaskLength,
pimBsrElectedBSRExpiryTime }
STATUS current
DESCRIPTION
"A collection of objects for managing the Bootstrap
Router (BSR) mechanism for PIM routers."
::= { pimBsrGroups 1 }
pimBsrDiagnosticsGroup NOTIFICATION-GROUP
NOTIFICATIONS { pimBsrElectedBSRLostElection,
pimBsrCandidateBSRWinElection }
STATUS current
DESCRIPTION
"Objects providing additional diagnostics related to
the Bootstrap Router (BSR) mechanism for PIM routers."
::= { pimBsrGroups 2 }
END
6. Security Considerations
There are a number of management objects defined in this MIB module
with a MAX-ACCESS clause of read-write and/or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
Joshi & Bijlani Standards Track [Page 17]RFC 5240 PIM BSR MIB June 2008
environment without proper protection can have a negative effect on
network operations. These are the tables and objects and their
sensitivity/vulnerability:
o A new Candidate-BSR with high priority or modification of priority
( bsrCandidateBSRPriority ) of an existing Candidate-BSR can take
over the functionality of an Elected BSR, which can prevent and
disrupt the services.
o A new Candidate-RP with lower priority or modification of priority
( bsrCandidateRPPriority ) of an existing Candidate-RP can force
other routers to select itself for a particular group prefix.
This can prevent and disrupt the services provided through this
group prefix.
The following are the read-write and read-create objects defined in
this MIB module:
bsrCandidateRPBidir
bsrCandidateRPPriority
bsrCandidateRPAdvInterval
bsrCandidateRPHoldtime
bsrCandidateBSRAddressType
bsrCandidateBSRAddress
bsrCandidateBSRPriority
bsrCandidateBSRHashMaskLength
Some of the readable objects in this MIB module (i.e., objects with a
MAX-ACCESS other than not-accessible) may be considered sensitive or
vulnerable in some network environments. It is thus important to
control even GET and/or NOTIFY access to these objects and possibly
to even encrypt the values of these objects when sending them over
the network via SNMP. These are the tables and objects and their
sensitivity/vulnerability:
pimBsrCandidateRPAdvTimer
pimBsrElectedBSRRPSetPriority
pimBsrElectedBSRRPSetHoldtime
pimBsrElectedBSRRPSetExpiryTime
pimBsrElectedBSRRPSetGrpBidir
pimBsrCandidateBSRElectedBSR
pimBsrCandidateBSRBootstrapTimer
pimBsrElectedBSRAddressType
pimBsrElectedBSRAddress
pimBsrElectedBSRPriority
pimBsrElectedBSRHashMaskLength
pimBsrElectedBSRExpiryTime
Joshi & Bijlani Standards Track [Page 18]RFC 5240 PIM BSR MIB June 2008
In this MIB module, possible effects that can be induced by GET
operations include:
o Determination of Elected BSR, Candidate-BSRs, and Candidate-RPs in
the Multicast Network topology. This information may be sensitive
and may be used in preparation for Denial-of-Service (DoS) attacks
including any of the attacks described above.
SNMP versions prior to SNMPv3 did not include adequate security.
Even if the network itself is secure (for example by using IPsec),
there is still no control over whom on the secure network is allowed
to access (read/change/create/delete) the objects in this MIB module.
It is RECOMMENDED that implementers consider the security features as
provided by the SNMPv3 framework (see [RFC3410], section 8),
including full support for the SNMPv3 cryptographic mechanisms (for
authentication and privacy).
Further, deployment of SNMP versions prior to SNMPv3 is NOT
RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
enable cryptographic security. It is then a customer/operator
responsibility to ensure that the SNMP entity giving access to an
instance of this MIB module is properly configured to give access to
the objects only to those principals (users) that have legitimate
rights to access (read/change/create/delete) them.
7. IANA Considerations
The MIB module in this document uses the following IANA-assigned
OBJECT IDENTIFIER values recorded in the SMI Numbers registry:
Descriptor OBJECT IDENTIFIER value
---------- -----------------------
pimBsrMIB { mib-2 172 }
8. Acknowledgments
This MIB module is based on the original work in [RFC5060] by R.
Sivaramu, J. Lingard, and B. Joshi.
Many thanks to Bill Fenner, Stig Venaas, Nidhi Bhaskar, David
Mcwalter, David Harrington, and J. W. Atwood for their feedback on
this MIB module.
Suggested IPv6 multicast MIBs by R. Sivaramu and R. Raghunarayan have
been used for comparison while editing this MIB module.
Joshi & Bijlani Standards Track [Page 19]RFC 5240 PIM BSR MIB June 2008
9. References
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RFC 5240 PIM BSR MIB June 2008
9.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Structure of Management Information
Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.
[RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J.
Schoenwaelder, Ed., "Textual Conventions for SMIv2",
STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., and J. Schoenwaelder,
"Conformance Statements for SMIv2", STD 58, RFC 2580,
April 1999.
[RFC4001] Daniele, M., Haberman, B., Routhier, S., and J.
Schoenwaelder, "Textual Conventions for Internet Network
Addresses", RFC 4001, February 2005.
[RFC4601] Fenner, B., Handley, M., Holbrook, H., and I. Kouvelas,
"Protocol Independent Multicast - Sparse Mode (PIM-SM):
Protocol Specification (Revised)", RFC 4601, August 2006.
[RFC5060] Sivaramu, R., Lingard, J., McWalter, D., Joshi, B., and A.
Kessler, "Protocol Independent Multicast MIB", RFC 5060,
January 2008.
[RFC5059] Bhaskar, N., Gall, A., Lingard, J., and S. Venaas,
"Bootstrap Router (BSR) Mechanism for Protocol Independent
Multicast (PIM)", RFC 5059, January 2008.
[RFC5132] McWalter, D., Thaler, D., and A. Kessler, "IP Multicast
MIB", RFC 5132, December 2007.
9.2. Informative References
[RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction and Applicability Statements for Internet-
Standard Management Framework", RFC 3410, December 2002.
Joshi & Bijlani Standards Track [Page 21]RFC 5240 PIM BSR MIB June 2008
Authors' Addresses
Bharat Joshi
Infosys Technologies Ltd.
44 Electronics City, Hosur Road
Bangalore 560 100
India
EMail: bharat_joshi@infosys.com
URI: http://www.infosys.com/
Raina Bijlani
EMail: rainab@gmail.com
Joshi & Bijlani Standards Track [Page 22]
RFC 5240 PIM BSR MIB June 2008
Full Copyright Statement
Copyright (C) The IETF Trust (2008).
This document is subject to the rights, licenses and restrictions
contained in BCP 78, and except as set forth therein, the authors
retain all their rights.
This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND
THE INTERNET ENGINEERING TASK FORCE DISCLAIM ALL WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF
THE INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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this standard. Please address the information to the IETF at
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Joshi & Bijlani Standards Track [Page 23]
