Cisco Cisco Videoscape Voyager Vantage 3.2 User Guide
70
Manufacturer Diagnostics
DOCSIS Downstream Screen
Table 13
DOCSIS Downstream Screen
Field Name
Description
Possible Values
ifIndex
Interface Index of the downstream
channel.
channel.
[Integer]
3 — One of the CATV downstream
interfaces
interfaces
48-79 — Additional CATV
downstream interfaces
downstream interfaces
Ch ID
Identification value associated with a
DSG rule.
DSG rule.
[Integer > 0]
Status
Status of the Downstream interface.
Up
Down
Freq
The downstream and upstream
frequency (MHz).
frequency (MHz).
[Dependent on frequency]
Mod
A downstream mode for the inband
tuner.
tuner.
Downstream
—
QAM-64
—
QAM-256
—
Other
—
Unknown
Interleave
The forward error correction (FEC)
interleaving used for the downstream
channel.
interleaving used for the downstream
channel.
[Integer]
Values:
—
1: Unknown
—
2: other
—
3: taps8Increment16
—
4: taps16Increment8
—
5: taps32Increment4
—
6: taps64Increment2
—
7: taps128Increment1
—
8: taps12Increment17
Width
The downstream signal bandwidth.
6 MHz: Downstream for DOCSIS
8 MHz: Downstream for
EuroDOCSIS
EuroDOCSIS
Level
the downstream power levels relative
to 1 millivolt (dBmV).
to 1 millivolt (dBmV).
[Integer]
MER
Modulation error ratio (MER) of the
downstream channel.
downstream channel.
[Integer]
bps
The downstream transmission rate in
bits per second (bps).
bits per second (bps).
[Integer > 0]
Bytes
The cumulative number of bytes
received downstream.
received downstream.
[Integer > 0]