Setting The Dejitter Buffer Size; Setting An Idle Pattern (Optional); Enabling Dummy Mode; Setting A Dummy Pattern - Cisco ASR 900 Series Configuration Manual
Time division multiplexing configuration; cisco ios xe fuji 16.7.x
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Also See for ASR 900 Series:
- Release notes (310 pages) ,
- Manual (174 pages) ,
- Configuration manual (172 pages)
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Configuring Pseudowire
delay is always 1 millisecond. For example, a structured CEM channel of 16xDS0 has a default payload size
of 128 bytes.
The payload size must be an integer of the multiple of the number of time slots for structured CEM channels.
Setting the Dejitter Buffer Size
To specify the size of the dejitter buffer used to compensate for the network filter, use the dejitter-buffer size
command. The configured dejitter buffer size is converted from milliseconds to packets and rounded up to
the next integral number of packets. Use the size argument to specify the size of the buffer, in milliseconds.
The range is from 1 to 32 ms; the default is 5 ms.
Setting an Idle Pattern (Optional)
To specify an idle pattern, use the [no] idle-pattern pattern1 command. The payload of each lost CESoPSN
data packet must be replaced with the equivalent amount of the replacement data. The range for pattern is
from 0x0 to 0xFF; the default idle pattern is 0xFF.
Enabling Dummy Mode
Dummy mode enables a bit pattern for filling in for lost or corrupted frames. To enable dummy mode, use
the dummy-mode [last-frame | user-defined] command. The default is last-frame. The following is an
example:
Router(config-cem)# dummy-mode last-frame
Setting a Dummy Pattern
If dummy mode is set to user-defined, you can use the dummy-pattern pattern command to configure the
dummy pattern. The range for pattern is from 0x0 to 0xFF. The default dummy pattern is 0xFF. The following
is an example:
Router(config-cem)# dummy-pattern 0x55
The dummy-pattern command is not supported on the following interface modules:
Note
• 48-Port T3/E3 CEM interface module
• 48-Port T1/E1 CEM interface module
• 1-port OC-192 Interface module or 8-port Low Rate interface module
Shutting Down a CEM Channel
To shut down a CEM channel, use the shutdown command in CEM configuration mode. The shutdown
command is supported only under CEM mode and not under the CEM class.
Time Division Multiplexing Configuration Guide, Cisco IOS XE Fuji 16.7.x (Cisco ASR 900 Series)
Configuring CEM Parameters
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