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Chapter 6
Cable CPE Commands
Table 17
Field
Scheduling Type
Request/Transmission
Policy
Nominal Polling Interval The interval, in microseconds, between successive unicast grant requests
Tolerated Poll Jitter
Unsolicited Grant Size
Nominal Grant Interval
Tolerated Grant Jitter
Grants Per Interval
Max DS Latency
OL-1581-07
show controllers cable-modem service-flows Field Descriptions
Description
The type of service used on the upstream for grant requests:
1 = Undefined
•
•
2 = Best effort
•
3 = Non-real-time polling service (NRTPS)
4 = Real-time polling service (RTPS)
•
5 = Unsolicited grant service with activity detection (UGS-AD)
•
6 = Unsolicited grant service (UGS)
•
The allowable means of grant request and transmission on the upstream.
This value is a 9-bit mask where the bits have the following meanings
when set to 1:
Bit 0 = Do not use broadcast request opportunities.
•
Bit 1 = Do not use priority request multicast request opportunities.
•
Bit 2 = Do not use Request/Data grants for requests.
•
•
Bit 3 = Do not use Request/Data grants for data.
•
Bit 4 = Do not piggyback data on grant requests.
•
Bit 5 = Do not use concatenation.
Bit 6 = Do not use DOCSIS fragmentation.
•
Bit 7 = Do not use payload header suppression (PHS).
•
Bit 8 = UGS service flows must drop packets that do not fit.
•
See
Table 18
flow types.
for the service flow on the upstream.
The maximum amount of time, in microseconds, that a unicast request
interval may be delayed from the typical polling schedule.
The size of unsolicited grants, in bytes.
The interval, in microseconds, between successive data grant opportunities
for the service flow on the upstream.
The maximum amount of time, in microseconds, that transmission
opportunities may be delayed from the typical polling schedule.
The actual number of grants per Nominal Grant Interval for UGS service
flows, and the maximum number of active grants per Nominal Grant
Interval for UGS-AD service flows.
The maximum latency, in microseconds, between the reception of a packet
by the CMTS on its network interface and the transmission of the packet
on its downstream cable interface.
show controllers cable-modem service-flows
for the possible values of each bit for each of the supported
Cisco Broadband Cable Command Reference Guide
6-133
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