Configuring A Clear-Channel Atm Interface; Configuring Cem Parameters; Configuring Payload Size (Optional) - Cisco ASR 900 Series Configuration Manual

Configuring a Clear-Channel ATM Interface

Command or Action
Step 7
exit
Example:
Router(config-if-cem)#
Example:
Step 8
exit
Example:
Router(config-if)# exit
Example:
Configuring a Clear-Channel ATM Interface

Configuring CEM Parameters

The following sections describe the parameters you can configure for CEM circuits.
The CEM parameters at the local and remote ends of a CEM circuit must match; otherwise, the pseudowire
Note
between the local and remote PE routers will not come up.

Configuring Payload Size (Optional)

To specify the number of bytes encapsulated into a single IP packet, use the pay-load size command. The size
argument specifies the number of bytes in the payload of each packet. The range is from 32 to 1312 bytes.
Default payload sizes for an unstructured CEM channel are as follows:
• E1 = 256 bytes
• T1 = 192 bytes
• DS0 = 32 bytes
Default payload sizes for a structured CEM channel depend on the number of time slots that constitute the
channel. Payload size (L in bytes), number of time slots (N), and packetization delay (D in milliseconds) have
the following relationship: L = 8*N*D. The default payload size is selected in such a way that the packetization
Time Division Multiplexing Configuration Guide, Cisco IOS XE Fuji 16.7.x (Cisco ASR 900 Series)
12
exit
Purpose
Exits the CEM interface.
Exits configuration mode.
Configuring Pseudowire