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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router
New Features in Cisco IOS Release 12.4(16)MR1
Use the time slots keyword and the timeslot-range argument to specify the time slots to be included in
the CEM channel. The list of time slots may include comma s and hyphens with no spaces between the
numbers, commas, and hyphens.
The following example illustrates the use of the cem-group command:
SATOP
controller el 0/0/0
cem-group 0 unframed
int cem 0/0/0
cem 0
xconnect 10.10.10.10 200 encap mpls
CESoPSN
controller e1 0/0/1
cem-group 0 timeslots 1-31
int cem 0/0/1
cem 0
xconnect 10.10.10.10 200 encap mpls
A new command sample-rate has been added to this feature to specify in milliseconds the rate that
hardware samples data on the attached circuit.
The default is 1 ms. The sample-rate command translates into the payload-size that is sent over the
circuit.
• 32-time slots at 1 ms = 256-bytes (32-time slots * 8-bytes/timeslot/ms)
• 24-time slots at 2 ms = 384-bytes (24-time slots * 16-bytes/timeslot/ms)
• 10-time slots at 1 ms = 80-bytes (10-time slots * 8-bytes/timeslot/ms)
The following example illustrates the use of the sample-rate command:
interface CEM0/0/0
no ip address
cem 0
sample-rate 2
xconnect 10.10.10.10 200 encapsulation mpls
A new command dejitter-buffer has been added to this feature to specify the size of the dejitter-buffer
used to compensate for the network jitter.
• Use the size argument to specify the size of the buffer in milliseconds.
• Size can vary from 4 - 500 ms; default is 4 ms.
The following example illustrates the use of the dejitter-buffer command:
interface CEM0/0/0
no ip address
cem 0
dejitter-buffer 10
xconnect 10.10.10.10 200 encapsulation mpls
A new command idle-pattern has been added to this feature to specify the data pattern transmitted on
the T1/E1 when missing packets are detected on the PWE3 circuit.
The default idle-pattern command is 0xFF.