Configure E3 Interfaces

E3 is a high-speed WAN digital communication technique designed to operate over copper facilities at a rate of 34.368 mbps. Widely used outside North America, it is the time division multiplexing scheme used to carry 16 E1 circuits. The following standards apply to E3 interfaces:

ITU-T Recommendation G.703, Physical/electrical characteristics of hierarchical digital interfaces, describes data rates and multiplexing schemes for the E series.
ITU-T Recommendation G.751, General Aspects of Digital Transmission Systems: Terminal Equipment, describes framing methods.
ITU-T Recommendation G.775, Loss of Signal (LOS) and Alarm Indication Signal (AIS) Defect Detection and Clearance Criteria, describes alarm reporting methods.

To configure E3-specific physical interface properties, include the e3-options statement at the [edit interfaces interface-name] hierarchy level:

 [edit interfaces interface-name]
 e3-options { 
 	 bert-algorithm algorithm; 
 	 bert-error-rate rate; 
 	 bert-period seconds; 
 	 compatibility-mode (digital-link | kentrox | larscom); 
 	 fcs (32 | 16);
 	 idle-cycle-flag value; 
 	 loopback (local | remote); 
 	 (payload-scrambler | no-payload-scrambler); 
 	 start-end-flag value; 
 }

You can configure the following E3-specific properties:

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