DOCS-MCAST-MIB
AI MIB Summary
The DOCS-MCAST-MIB module enables monitoring and configuration of DOCSIS cable modem termination systems (CMTS) and cable modems to manage IP multicast delivery, specifically tracking DSID forwarding states and bonded multicast session parameters.
This MIB module contains the management objects for the management of Multicast over DOCSIS to support Multicast DSID forwarding and or bonded multicast.
Main OID:
docsMcastMib.1.3.6.1.4.1.4491.2.1.18
62
Objects
Active
Status
9
Dependencies
Imported Objects
Objects
62 total| Object Name |
|---|
docsMcastMibThis MIB module contains the management objects for the
management of Multicast over DOCSIS to support Multicast
DSID forwarding and or bonded multicast. MODULE-IDENTITY .1.3.6.1.4.1.4491.2.1.18 |
docsMcastMibObjects OBJECT IDENTIFIER .1.3.6.1.4.1.4491.2.1.18.1 |
docsMcastCmtsGrpCfgTableThis object controls the QoS, PHS and encryption settings
for downstream forwarding of IP multicast sessions.
An IP multicast session is replicated to one
or more Downstream Channel Sets (DCSs), where each
DCS is either a single downstream channel or a downstream
bonding group of multiple channels. The CMTS determines
on which DCSs to replicate a multicast session
based on IP multicast membership reports ('joins')
or other vendor-specific static configuration.
The CmtsGrpCfg object allows for the configuration
of a range of sessions through the SrcPrefixAddr and
GrpPrefixAddr and SrcPrefixLen and GrpPrefixLen attributes.
The CmtsGrpCfg object allows for the configuration
of QoS, Encryption and PHS for multicast sessions. Cable
operators can specify configuration rules for
a range of multicast sessions through the tuple of
(SrcPrefixAddr,SrcPrefixLen, GrpPrefixAddr, GrpPrefixLen)
attributes in an entry. The QosConfigId attribute
identifies the QoS rule, the EncryptionConfigId
identifies the encryption rule and the PhsConfigId
identifies the PHS rule for a particular entry.
Even if an entry indicates a range of multicast sessions
the Encryption and PHS rules are applied on a per-session
basis. That is, a separate DSID is assigned
to an individual multicast session from a range of multicast
sessions identified by an entry in the CmtsGrpCfg
object and a PHS rule (indicated by the PhsCfgId)
is applied individually to each session which is
identified by the DSID assigned for that session. Similarly,
a separate SAID is assigned to individual multicast
session from range identified by the CmtsGrpCfg
object.
The CmtsGrpQosConfigQosCtrl attribute from the CmtsGrpQosCfg
object is used to determine if the traffic
for a range of multicast sessions identified by an
entry in the CmtsGrpCfg object will be transmitted in
an 'Aggregate-Session' Group Service Flow or will
be transmitted separately for each session using
'Single-Session' Group Service Flows. Even if the range
of multicast sessions are transmitted on an 'Aggregate-Session'
Group Service Flow, the PHS and Encryption
rules are always applied individually to a multicast
session on a per-session DSID basis prior to
being transmitted on an 'Aggregate-Session' Group
Service Flow (GSF).
This object supports the creation and deletion of multiple
instances.
Creation of a new instance of this object requires the
following attributes to be set
RulePriority
PrefixAddrType
SrcPrefixAddr
SrcPrefixLen
GrpPrefixAddr
GrpPrefixLen
IpDsLow
IpDsHigh
IpDsMask SEQUENCE OF DocsMcastCmtsGrpCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.1 |
docsMcastCmtsGrpCfgEntryThe conceptual row of docsMcastCmtsGrpCfg.
The CMTS persists all instances of the CmtsGrpConfig object
across system reinitializations. DocsMcastCmtsGrpCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.1.1 |
docsMcastCmtsGrpCfgIdThis attribute represents the unique identifier
of instances of this object. This attribute is
the key that identifies unique instances of the CmtsGrpConfig
object. Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.1.1.1 |
docsMcastCmtsGrpCfgRulePriorityThis attribute indicates the priority of this entry
used to resolve which instance of this object apply
when a newly replicated multicast session matches
multiple entries. Higher values indicate a higher
priority. Valid values for this attribute are 0..63
and 192..255 in order to not conflict with CMTS
internally-created instances that use the range
64..191.rw Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.1.1.2 |
docsMcastCmtsGrpCfgPrefixAddrTypeThis attribute identifies the address family for
the multicast session (S,G) of the GC which corresponds
to the SrcPrefixAddr and GrpPrefixAddr attributes
respectively.rw InetAddressType (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.1.1.3 |
docsMcastCmtsGrpCfgSrcPrefixAddrThis attribute defines the IP source address prefix
of the IP multicast session.
Source prefix addresses are unicast host addresses.rw InetAddress (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.1.1.4 |
docsMcastCmtsGrpCfgSrcPrefixLenThis attribute identifies the prefix of a range of
Source (S) IP multicast group addresses. For Group or
ASM based sessions this attribute is set to 0.rw InetAddressPrefixLength (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.1.1.5 |
docsMcastCmtsGrpCfgGrpPrefixAddrThis attribute identifies the prefix of a range of
destination IP multicast group addresses.rw InetAddress (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.1.1.6 |
docsMcastCmtsGrpCfgGrpPrefixLenThis attribute identifies the prefix of a range of
IP multicast group addresses.rw InetAddressPrefixLength (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.1.1.7 |
docsMcastCmtsGrpCfgTosLowThis attribute identifies the low value of a range
of the TOS byte value to be defined in a packet classifier
this GC instantiates in the GCR in order to limit the
GCR-matched traffic to a particular set of DSCPs.
This applies to the IPv4 TOS byte and the IPv6 Traffic
Class byte.
The IP TOS octet, as originally defined in RFC 791, has
been superseded by the 6-bit Differentiated Services
Field and the 2-bit Explicit Congestion Notification
Field.rw OCTET STRING .1.3.6.1.4.1.4491.2.1.18.1.1.1.8 |
docsMcastCmtsGrpCfgTosHighThis attribute identifies the high value of a range
of the TOS byte value to be defined in a packet classifier
this GC instantiates in the GCR in order to limit
the GCR-matched traffic to a particular set of DSCPs.
This applies to the IPv4 TOS byte and the IPv6 Traffic
Class byte.
The IP TOS octet, as originally defined in RFC 791, has
been superseded by the 6-bit Differentiated Services
Field (DSField, RFC 3260) and the 2-bit Explicit
Congestion Notification Field (ECN field, RFC 3168).rw OCTET STRING .1.3.6.1.4.1.4491.2.1.18.1.1.1.9 |
docsMcastCmtsGrpCfgTosMaskThis attribute identifies the mask value bitwise
ANDed with a TOS byte value to be defined in a packet classifier
this GC instantiates in the GCR in order to limit
the GCR-matched traffic to a particular set of DSCPs.
This applies to the IPv4 TOS byte and the IPv6 Traffic
Class byte.
The IP TOS octet, as originally defined in RFC 791, has
been superseded by the 6-bit Differentiated Services
Field (DSField, RFC 3260) and the 2-bit Explicit
Congestion Notification Field (ECN field, RFC 3168).rw OCTET STRING .1.3.6.1.4.1.4491.2.1.18.1.1.1.10 |
docsMcastCmtsGrpCfgQosConfigIdThis attribute identifies an instance in CmtsGrpQosCfg
for configuring the QoS for the replication
of the sessions matching this CmtsGrpCfg instance.
The value 0 indicates that all replications referenced
by this CmtsGrpCfg instance will be forwarded to the
default GSF.rw Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.1.1.11 |
docsMcastCmtsGrpCfgEncryptConfigIdThis attribute identifies an instance in CmtsGrpEncryptionCfg
for configuring the encryption of replicationsderived
from this GC.
The value 0 indicates no encryption for all replications
derived from this GC.rw Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.1.1.12 |
docsMcastCmtsGrpCfgPhsConfigIdThis attribute identifies an instance in CmtsGrpPhsCfg
that configures DSID-indexed PHS compression
for all replications derived from this GC.
The value 0 indicates no PHS compression for all replications
derived from this GC.rw Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.1.1.13 |
docsMcastCmtsGrpCfgRowStatusThe status of this instance.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.4491.2.1.18.1.1.1.14 |
docsMcastCmtsGrpEncryptCfgTableThis object controls the configuration of the Security
Association (SA) and the encryption algorithm
used for multicast sessions.
This object supports the creation and deletion of instances. SEQUENCE OF DocsMcastCmtsGrpEncryptCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.2 |
docsMcastCmtsGrpEncryptCfgEntryThe conceptual row of docsMcastCmtsGrpEncryptCfg.
The CMTS persists all instances of the CmtsGrpEncryptionConfig
object across system reinitializations. DocsMcastCmtsGrpEncryptCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.2.1 |
docsMcastCmtsGrpEncryptCfgIdThis attribute specifies the unique identifier of
instances of this object Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.2.1.1 |
docsMcastCmtsGrpEncryptCfgCtrlThis attribute controls whether the CMTS can select
the encryption algorithm or if this can be set manually
using the Alg attribute. If this attribute is set
to 'cmts', the CMTS can select the encryption algorithm
for the Security Association (SA). If this attribute
is set to 'mgmt', the Alg attribute is used to define
the encryption algorithm for this SA.rw Enumeration .1.3.6.1.4.1.4491.2.1.18.1.2.1.2 |
docsMcastCmtsGrpEncryptCfgAlgThis attribute defines which encryption algorithm
will be used for an SA referenced by this object when
the Ctrl is set to 'mgmt'.rw DocsBpkmDataEncryptAlg (DOCS-IETF-BPI2-MIB) .1.3.6.1.4.1.4491.2.1.18.1.2.1.3 |
docsMcastCmtsGrpEncryptCfgRowStatusThe status of this instance.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.4491.2.1.18.1.2.1.4 |
docsMcastCmtsGrpPhsCfgTableThis object controls the configuration of DSID-indexed
PHS for multicast sessions. Configuration of
PHS Rules via this table must not be based on the configuration
of a range of sessions, but must be configured
on a single multicast session.
Creation of multple instances of this object require
the following attributes to be set:
PhsField
PhsMask
PhsSize SEQUENCE OF DocsMcastCmtsGrpPhsCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.3 |
docsMcastCmtsGrpPhsCfgEntryThe conceptual row of docsMcastCmtsGrpPhsCfg.
The CMTS persists all instances of the CmtsGrpPhsConfig
object across system reinitializations. DocsMcastCmtsGrpPhsCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.3.1 |
docsMcastCmtsGrpPhsCfgIdThis attribute identifies the unique identifier
of a PHS rule that is referenced by the GrpConfig object. Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.3.1.1 |
docsMcastCmtsGrpPhsCfgPhsFieldThis attribute defines the bytes of the DOCSIS header
which must be suppressed/restored by the sending/receiving
device.rw OCTET STRING .1.3.6.1.4.1.4491.2.1.18.1.3.1.2 |
docsMcastCmtsGrpPhsCfgPhsMaskThis attribute defines the bit mask which is used in
combination with the PhsField to define which bytes
in header must be suppressed/restored by the sending
or receiving device.
Each bit of this bit mask corresponds to a byte in the
PhsField, with the least significant bit corresponding
to the first byte of the PhsField.
Each bit of the bit mask specifies whether or not the
corresponding byte should be suppressed in the packet.
A bit value of '1' indicates that the byte should be
suppressed by the sending device and restored by the
receiving device.
A bit value of '0' indicates that the byte should not be
suppressed by the sending device or restored by the
receiving device.
If the bit mask does not contain a bit for each byte in the
PhsField then the bit mask is extended with bit values
of '1' to be the necessary length.rw OCTET STRING .1.3.6.1.4.1.4491.2.1.18.1.3.1.3 |
docsMcastCmtsGrpPhsCfgPhsSizeThis attribute specifies the number of bytes in the
header to be suppressed and restored.
The value of this object matches the number of bytes the
bits indicated in the PhsField attribute.rw Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.3.1.4 |
docsMcastCmtsGrpPhsCfgPhsVerifyThis attribute specifies the Payload Header Suppression
verification value of 'true' the sender must
verify PhsField is the same as what is contained in the
packet to be suppressed.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4491.2.1.18.1.3.1.5 |
docsMcastCmtsGrpPhsCfgRowStatusThe status of this instance.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.4491.2.1.18.1.3.1.6 |
docsMcastCmtsGrpQosCfgTableThis object configures the QoS configured for Multicast
sessions replicated to any Downstream Channel
Set. It does not control which particular DCSs to which
the CMTS replicates a multicast session.
An instance in this object is called a GQC entry. A GQC
entry controls how the CMTS instantiates a Group Classifier
Rule (GCR) on the DCS to match packets of the multicast
session. A Group Classifier Rule (GCR) uses
source and destination IP address and ToS criteria.
A GQC entry controls how and with what QoS parameters
a Group Service Flow (GSF) is created on a DCS. All downstream
multicast packets are scheduled on a GSF. The
QoS Type attribute of the GQC entry controls whether
the CMTS creates one GSF for each single IP multicast
session or whether the CMTS creates one GSF for the aggregate
of all sessions that match the GQC criteria.
The GQC instance contains a reference to a Service Class
from docsIetfQosServiceClassTable. The Service
Class defines the list of QoS parameters for the GSF(s)
instantiated for the GQC entry.
A CMTS identifies one Service Class as the Default Group
QoS Service Class. The CMTS instantiates a Default
Group Service Flow on each single-channel DCS based
on the parameters of the Default Group QoS Service
Class.
The set of GCRs and GSFs instantiated on a DCS control
how QoS is provided to multicast packets replicated
to the DCS. For each multicast packet, the CMTS classifies
the packet to the highest priority matching GCR
on that DCS. The GCR refers to a single GSF, which controls
the scheduling of the packets on the DCS. If the
multicast packet does not match any GCR on the DCS, the
packet is scheduled on the Default Group Service Flow
of the DCS. The CMTS replicates unclassified multicast
traffic to only DCSs consisting of a single downstream
channel. Thus, the Maximum Sustained Traffic
Rate QoS parameter of the Default Group Service Class
limits the aggregate rate of unclassified multicast
traffic on each downstream channel.
The CMTS is expected to instantiate GCRs and GSFs controlled
by the entries in this table only for the duration
of replication of the multicast sessions matching
the entry.
This object supports the creation of multiple instances.
Creation of new instances of this object require the
following objects to be set:
ServiceClassName
QosCtrl
AggSessLimit SEQUENCE OF DocsMcastCmtsGrpQosCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.4 |
docsMcastCmtsGrpQosCfgEntryThe conceptual row of docsMcastCmtsGrpQosCfg.
The CMTS persists all instances of the CmtsGrpQosConfig
object across system reinitialization. DocsMcastCmtsGrpQosCfgEntry .1.3.6.1.4.1.4491.2.1.18.1.4.1 |
docsMcastCmtsGrpQosCfgIdThis attribute identifies a unique Group QoS Configuration
object instance. Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.4.1.1 |
docsMcastCmtsGrpQosCfgServiceClassNameThis attribute identifies the Service Class Name
reference for the set of QoS parameters for this GQC.rw SnmpAdminString .1.3.6.1.4.1.4491.2.1.18.1.4.1.2 |
docsMcastCmtsGrpQosCfgQosCtrlThis attribute identifies how Group Classifier Rules
(GCRs) and Group Service Flows (GSFs) are instantiated
when multiple sessions match the (S,G) criteria
of this entry. If 'singleSession', the CMTS creates
a unique GCR and a unique GSF for the session. If this
object's value is 'aggregateSession', all sessions
matching this criterion are aggregated into the
same GSF.rw Enumeration .1.3.6.1.4.1.4491.2.1.18.1.4.1.3 |
docsMcastCmtsGrpQosCfgAggSessLimitThis attribute identifies the maximum number of sessions
that may be aggregated in an aggregated Service
Flow. This value is ignored in case of a GQC entry with QosCtrl
set to 'singleSession'.rw Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.4.1.4 |
docsMcastCmtsGrpQosCfgAppIdThis attribute configures an application identifier
that an operator configures to enable special features
for QoS admission control or other policies.
The behavior and usage of the Application dentifier
is vendor specific.
This attribute allows the operator to configure a Cable
Operator defined Application Identifier for multicast
sessions, e.g., an Application Manager ID and
Application Type.
This Application Identifier can be used to influence
admission control or other policies in the CMTS that
outside of the scope of this specification.
This parameter is optional in defining QoS for
multicast sessions.
If the value of this attribute is different from the
value of the AppId in the referenced SCN for this GQC
instance, the value of this attribute is used.rw Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.4.1.5 |
docsMcastCmtsGrpQosCfgRowStatusThe status of this instance.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.4491.2.1.18.1.4.1.6 |
docsMcastCmtsReplSessTableThis object describes the replication of IP Multicast
sessions onto the different Downstream Channel
Sets of a CMTS. Each DCS may be either a single downstream
channel or a bonding group of multiple downstream
channels. Each IP Multicast session is identified
by a combination of IP source and IP Destination group
address '(S,G). The CMTS replicates each IP packet
in an (S,G) session onto one or more Downstream Channel
Sets (DCSs), each of which is implemented in a MAC
Domain. The CMTS assigns each replication a Downstream
Service ID (DSID) that is unique per MAC Domain. SEQUENCE OF DocsMcastCmtsReplSessEntry .1.3.6.1.4.1.4491.2.1.18.1.5 |
docsMcastCmtsReplSessEntryThe conceptual row of docsMcastCmtsReplSess. DocsMcastCmtsReplSessEntry .1.3.6.1.4.1.4491.2.1.18.1.5.1 |
docsMcastCmtsReplSessPrefixAddrTypeThis atrribute defines the address type for the GrpPrefix
and SrcPrefix addresses. InetAddressType (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.5.1.1 |
docsMcastCmtsReplSessGrpPrefixThis attribute defines the group G of a particular
(S,G) IP multicast session. InetAddress (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.5.1.2 |
docsMcastCmtsReplSessSrcPrefixThis attribute identifies a specific Multicast Source
Address. A Source Address that is all zeros is defined
as 'all source addresses (*, G)'. InetAddress (INET-ADDRESS-MIB) .1.3.6.1.4.1.4491.2.1.18.1.5.1.3 |
docsMcastCmtsReplSessMdIfIndexThis attribute defines the MAC Domain Interface index
of the channel to which the (S,G) session is replicated. InterfaceIndex (IF-MIB) .1.3.6.1.4.1.4491.2.1.18.1.5.1.4 |
docsMcastCmtsReplSessDcsIdThis attribute provides the reference for the Downstream
Channel Set within a MAC Domain that the multicast
session (S,G) is replicated to. ChSetId (DOCS-IF3-MIB) .1.3.6.1.4.1.4491.2.1.18.1.5.1.5 |
docsMcastCmtsReplSessServiceFlowIdThis attribute indicates the service flow into which
packets are classified for this replication of the
multicast session (S,G). Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.5.1.6 |
docsMcastCmtsReplSessDsidThis attribute defines the Downstream Service ID
(DSID) label with which the CMTS labels all packets of
the (S,G) session on the DCS of a MAC Domain. The DSID
value is unique per MAC domain.ro Dsid (DOCS-IF3-MIB) .1.3.6.1.4.1.4491.2.1.18.1.5.1.7 |
docsMcastCmtsReplSessSaidThis attribute defines the Security Association
ID (SAID) of this multicast replication session. The
value 0 indicates no SAID assocated with this session.ro DocsSAId (DOCS-IETF-BPI2-MIB) .1.3.6.1.4.1.4491.2.1.18.1.5.1.8 |
docsMcastDefGrpSvcClass OBJECT IDENTIFIER .1.3.6.1.4.1.4491.2.1.18.1.6 |
docsMcastDefGrpSvcClassDefThis attribute references an instance of the SNMP
table docsIetfQosServiceClassName object. This attribute
is used to expand the QoS parameter Set of QoS
for multicast sessions that uses a default QoS policy.
The CMTS persists all instances of this attribute across
reinitializations.rw SnmpAdminString .1.3.6.1.4.1.4491.2.1.18.1.6.1 |
docsMcastDsidPhsTableThis object reports the set of DSID-Indexed PHS rules
that are signaled between the CMTS and CMs as part
of the Multicast Sessions setup. The attributes PhsMask,
PhsSize and PhsVerify comes from the configuration
object CmtsGrpPhsCfg. The value of the PhsField
attribute is derived by the CMTS from the CmtsGrpCfg
object parameters, and possibly other IP header informaton
of the multicast session that the CMTS is capable
of knowning prior to the multicast session setup.
In cases where the PhsSize is longer than the CMTS
knowledge of IP/TCP header fields, the CMTS extends
the PhsMask with bits set to 0 until reaching the equivalent
PhsSize value. SEQUENCE OF DocsMcastDsidPhsEntry .1.3.6.1.4.1.4491.2.1.18.1.7 |
docsMcastDsidPhsEntryThe conceptual row of docsMcastDsidPhs.
The ifIndex key corresponds to the MAC Domain interface
where the PHSI-Indexed DSID is configured. DocsMcastDsidPhsEntry .1.3.6.1.4.1.4491.2.1.18.1.7.1 |
docsMcastDsidPhsDsidThis attribute represents the 20-bit DSID associated
with this PHS rule. Dsid (DOCS-IF3-MIB) .1.3.6.1.4.1.4491.2.1.18.1.7.1.1 |
docsMcastDsidPhsPhsFieldThis attribute defines the bytes of the header which
must be suppressed/restored by the sending/receiving
device.ro OCTET STRING .1.3.6.1.4.1.4491.2.1.18.1.7.1.2 |
docsMcastDsidPhsPhsMaskThis attribute defnes the Payload Header Suppression
mask in the header to be suppressed and restored.ro OCTET STRING .1.3.6.1.4.1.4491.2.1.18.1.7.1.3 |
docsMcastDsidPhsPhsSizeThis attribute defines the the number of bytes in the
header to be suppressed and restored.ro Unsigned32 .1.3.6.1.4.1.4491.2.1.18.1.7.1.4 |
docsMcastDsidPhsPhsVerifyThis attribute, when set to 'true', indicates that
the sender must verify that the PHS Field attribute
value is the same is the same as what is contained in the
packet to be suppressed.ro TruthValue (SNMPv2-TC) .1.3.6.1.4.1.4491.2.1.18.1.7.1.5 |
docsMcastMibConformance OBJECT IDENTIFIER .1.3.6.1.4.1.4491.2.1.18.2 |
docsMcastMibCompliances OBJECT IDENTIFIER .1.3.6.1.4.1.4491.2.1.18.2.1 |
docsMcastMibGroups OBJECT IDENTIFIER .1.3.6.1.4.1.4491.2.1.18.2.2 |