Configuring Cem - Cisco ASR 900 Series Configuration Manual

Configuring CEM

In SAToP mode, the interface is considered as a continuous framed bit stream. The packetization of the stream
is done according to IETF RFC 4553. All signaling is carried out transparently as a part of a bit stream.
Configuring CEM
This section provides information about how to configure CEM. CEM provides a bridge between a Time
Division Multiplexing (TDM) network and a packet network, MPLS. The chassis encapsulates the TDM data
in the MPLS packets and sends the data over a CEM pseudowire to the remote Provider Edge (PE) chassis.
The following sections describe how to configure CEM.
Configuring CEM Restriction
Not all combinations of payload size and dejitter buffer size are supported. If you apply an incompatible
payload size or dejitter buffer size configuration, the chassis rejects it and reverts to the previous configuration.
Note CEM interface does not support idle-cas parameter.
Configuring CEM Classes
A CEM class allows you to create a single configuration template for multiple CEM pseudowires. Follow
these steps to configure a CEM class:
Note • The CEM parameters can be configured either by using CEM class or on CEM interface directly.
• The CEM parameters at the local and remote ends of a CEM circuit must match; otherwise, the
enable
configure terminal
class cem mycemclass
payload-size 512
dejitter-buffer 12
exit
interface cem 0/4/0
cem 0
cem class mycemclass
xconnect 10.10.10.10 200 encapsulation mpls
exit
Configuring CEM Parameters
The following sections describe the parameters you can configure for CEM circuits.
1 port OC48/ 4 port OC12/OC3 + 12 port T1/E1 + 4 port T3/E3 CEM Interface Module Configuration Guide, Cisco
IOS XE Fuji 16.7.x (Cisco ASR 900 Series)
8
pseudowire between the local and remote PE chassis does not come up.
Configuring CEM