Specifications

17-3
Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter 17 Configuring Synchronous Ethernet ESMC and SSM
How to Configure Synchronous Ethernet (SyncE): ESMC and SSM
slow protocol; the ITU-T OUI, a specific ITU-T subtype; an ESMC-specific header; a flag field; and a
type, length, value (TLV) structure. The use of flags and TLVs improves the management of SyncE links
and the associated timing change.
How to Configure Synchronous Ethernet (SyncE): ESMC and
SSM
Perform this task to configure SyncE using ESMC and SSM.
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
controller BITS
Example:
Router(config)# controller BITS
Enters BITS controller configuration mode.
Step 4
applique {E1 | T1}
Example:
Router(config-controller)# applique e1
Specifies the BITS controller type.
Step 5
E1 controller
framing {crc4 | no-crc4 | none}
T1 controller
framing {esf | none | sf}
Example: E1 Controller
Router(config-controller)# framing crc4
Example: T1 Controller
Router(config-controller)# framing esf
Specify the framing type for the E1 or T1 BITS interface.
For an E1 interface, ensure that the controller is set to use
crc4 framing; CRC4 is the default setting.
For a T1 interface, configure the controller to use ESF
framing; ESF is not the default setting.
Step 6
ssm
Example:
Router(config-controller)# ssm
Enables SSM on the T1 or E1 BITS interface.
Step 7
sabit
Example:
Router(config-controller)# sabit 4
(Optional) Specifies the San synchronization status bit used
to indicate the clock quality level. Valid values are 4–8.
Note This command only applies to the E1 controller.