docsIetfQosParamSetTosAndMask
DOCS-IETF-QOS-MIB ·
.1.3.6.1.2.1.127.1.2.1.17
Object
column
OctetString
Specifies the AND mask for the IP TOS byte for
overwriting IP packet's TOS value. The IP packet
TOS byte is bitwise ANDed with
docsIetfQosParamSetTosAndMask, and the result is
bitwise ORed with docsIetfQosParamSetTosORMask and
the result is written to the IP packet TOS byte.
A value of 'FF'H for docsIetfQosParamSetTosAndMask
and a value of '00'H for
docsIetfQosParamSetTosOrMask means that the IP
Packet TOS byte is not overwritten.
This combination is reported if the referenced
parameter is not present in a QOS Parameter Set.
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has been superseded by the 6-bit Differentiated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). Network operators SHOULD avoid
specifying values of docsIetfQosParamSetTosAndMask
and docsIetfQosParamSetTosORMask that would result
in the modification of the ECN bits.
In particular, operators should not use values of
docsIetfQosParamSetTosAndMask that have either of
the least-significant two bits set to 0. Similarly,
operators should not use values of
docsIetfQosParamSetTosORMask that have either of
the least-significant two bits set to 1.
Even though this object is only enforced by the
Cable Modem Termination System (CMTS),
Cable Modems MUST report the value as signaled in
the referenced parameter.
Context
- MIB
- DOCS-IETF-QOS-MIB
- OID
.1.3.6.1.2.1.127.1.2.1.17- Type
- column
- Access
- readonly
- Status
- current
- Parent
- docsIetfQosParamSetEntry
- Table
- docsIetfQosParamSetTable
- Siblings
- 21
Syntax
OctetString
Values & Constraints
Object Constraints
range: 1-1
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| docsIetfQosParamSetServiceClassName Refers to the Service Class Name from which the
parameter set values were derived.
If the referenced parameter is not present in the
corresponding DOCSIS QOS Parame… | column | SNMP-FRAMEWORK-MIBSnmpAdminString | .1.3.6.1.2.1.127.1.2.1.1 |
| docsIetfQosParamSetSchedulingType Specifies the upstream scheduling service used for
upstream Service Flow.
If the referenced parameter is not present in the
corresponding DOCSIS QOS Parameter Set o… | column | DocsIetfQosSchedulingType | .1.3.6.1.2.1.127.1.2.1.10 |
| docsIetfQosParamSetNomPollInterval Specifies the nominal interval in microseconds
between successive unicast request
opportunities on an upstream Service Flow.
This object applies only to upstream Se… | column | microseconds SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.127.1.2.1.11 |
| docsIetfQosParamSetTolPollJitter Specifies the maximum amount of time in
microseconds that the unicast request interval
may be delayed from the nominal periodic
schedule on an upstream Service Flow.
… | column | microseconds SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.127.1.2.1.12 |
| docsIetfQosParamSetUnsolicitGrantSize Specifies the unsolicited grant size in bytes.
The grant size includes the entire MAC frame
data PDU from the Frame Control byte to the end
of the MAC frame.
The re… | column | Integer32 | .1.3.6.1.2.1.127.1.2.1.13 |
| docsIetfQosParamSetNomGrantInterval Specifies the nominal interval in microseconds
between successive data grant opportunities
on an upstream Service Flow.
The referenced parameter is applicable only
… | column | microseconds SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.127.1.2.1.14 |
| docsIetfQosParamSetTolGrantJitter Specifies the maximum amount of time in
microseconds that the transmission opportunities
may be delayed from the nominal periodic schedule.
The referenced parameter… | column | microseconds SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.127.1.2.1.15 |
| docsIetfQosParamSetGrantsPerInterval Specifies the number of data grants per Nominal
Grant Interval
(docsIetfQosParamSetNomGrantInterval).
The referenced parameter is applicable only
for upstream flows… | column | Integer32 | .1.3.6.1.2.1.127.1.2.1.16 |
| docsIetfQosParamSetTosOrMask Specifies the OR mask for the IP TOS byte.
See the description of docsIetfQosParamSetTosAndMask
for further details.
The IP TOS octet as originally d… | column | OctetString | .1.3.6.1.2.1.127.1.2.1.18 |
| docsIetfQosParamSetMaxLatency Specifies the maximum latency between the
reception of a packet by the CMTS on its NSI
and the forwarding of the packet to the RF
interface. A value of 0 signifies no maximum
lat… | column | microseconds SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.127.1.2.1.19 |
| docsIetfQosParamSetPriority The relative priority of a Service Flow.
Higher numbers indicate higher priority.
This priority should only be used to differentiate
Service Flow from identical par… | column | Integer32 | .1.3.6.1.2.1.127.1.2.1.2 |
| docsIetfQosParamSetType Defines the type of the QOS parameter set defined
by this row. active(1) indicates the Active QOS
parameter set, describing the service currently
being provided by the DOCSIS MAC… | column | Enumeration | .1.3.6.1.2.1.127.1.2.1.20 |
| docsIetfQosParamSetRequestPolicyOct Specifies which transmit interval opportunities
the CM omits for upstream transmission requests and
packet transmissions. This object takes its
default value for downstream Servi… | column | OctetString | .1.3.6.1.2.1.127.1.2.1.21 |
| docsIetfQosParamSetBitMap This object indicates the set of QOS Parameter
Set parameters actually signaled in the
DOCSIS registration or dynamic service request
message that created or modified the QOS Para… | column | Bits | .1.3.6.1.2.1.127.1.2.1.22 |
| docsIetfQosParamSetMaxTrafficRate Maximum sustained traffic rate allowed for this
Service Flow in bits/sec. Must count all MAC frame
data PDU from the bytes following the MAC header
HCS to the end of the CRC. Th… | column | DocsIetfQosBitRate | .1.3.6.1.2.1.127.1.2.1.3 |
| docsIetfQosParamSetMaxTrafficBurst Specifies the token bucket size in bytes
for this parameter set. The value is calculated
from the byte following the MAC header HCS to
the end of the CRC. This object is applied… | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.127.1.2.1.4 |
| docsIetfQosParamSetMinReservedRate Specifies the guaranteed minimum rate in
bits/sec for this parameter set. The value is
calculated from the byte following the MAC
header HCS to the end of the CRC. The default
v… | column | DocsIetfQosBitRate | .1.3.6.1.2.1.127.1.2.1.5 |
| docsIetfQosParamSetMinReservedPkt Specifies an assumed minimum packet size in
bytes for which the
docsIetfQosParamSetMinReservedRate will be
provided. The value is calculated from the byte
following the MAC heade… | column | Integer32 | .1.3.6.1.2.1.127.1.2.1.6 |
| docsIetfQosParamSetActiveTimeout Specifies the maximum duration in seconds that
resources remain unused on an active service
flow before CMTS signals that both active and
admitted parameters set are null. The de… | column | seconds Integer32 | .1.3.6.1.2.1.127.1.2.1.7 |
| docsIetfQosParamSetAdmittedTimeout Specifies the maximum duration in seconds that
resources remain in admitted state before
resources must be released.
The value of 0 signifies an infinite amount
of … | column | seconds Integer32 | .1.3.6.1.2.1.127.1.2.1.8 |
| docsIetfQosParamSetMaxConcatBurst Specifies the maximum concatenated burst in
bytes that an upstream Service Flow is allowed.
The value is calculated from the FC byte of the
Concatenation MAC Header to the last CR… | column | Integer32 | .1.3.6.1.2.1.127.1.2.1.9 |