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Chapter 2
Configuring T1/E1 Interfaces
7.
8.
9.
10.
11.
12.
13.
Command
Step 1
enable
Step 2
configure terminal
Step 3
Router(config)# class cem
mycemclass
Step 4
payload-size size
dejitter-buffer size
Step 5
Router(config-cem-class)# exit
Step 6
Router(config)# interface cem 0/1
Router(config-if)# no ip address
Router(config-if)# cem 0 mycemclass
Router(config-if-cem)# xconnect
192.0.2.1 200 encapsulation mpls
Step 7
Router(config-if-cem)# exit
Router(config-if)#
Step 8
exit
Configuring CEM Parameters
The following sections describe the parameters you can configure for CEM circuits.
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•
•
The CEM parameters at the local and remote ends of a CEM circuit must match; otherwise, the
Note
pseudowire 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 192 to 256
bytes.
Default payload sizes for an unstructured CEM channel are as follows:
OL-27620-01
interface cem 0/number
no ip address
cem 0/number
cem group-number
xconnect peer-ip-address vc-id {encapsulation {mpls}
exit
exit
Purpose
Enables privileged EXEC mode.
Enters global configuration mode.
Creates a new CEM class.
Enter the configuration commands common to the CEM class. This
example specifies a sample rate, payload size, and dejitter buffer.
Returns to the config prompt.
Configure the CEM interface that you want to use for the new CEM class.
Note
Exits the CEM interface.
Exits configuration mode.
Configuring Payload Size (Optional), page 2-15
Setting the Dejitter Buffer Size, page 2-16
Shutting Down a CEM Channel, page 2-16
Enter your password if prompted.
•
The use of the xconnect command can vary depending on the type
of pseudowire you are configuring.
Cisco ME-3600X-24CX Series Switch Chassis Configuration Guide
Configuring CEM
2-15
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