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FAQ-How to Configure Loopback at Interfaces E1E3T3 of NE80NE40

Publication Date:  2012-07-27 Views:  44 Downloads:  0
Issue Description
Q: How to Configure Loopback at Interfaces E1E3T3 of NE80NE40?
Alarm Information
Null
Handling Process
A: It needs to set the clock of the interface to master if necessary to configure it with loopback; otherwise, it prompts failure. 
For example: 
[145-E1 3/0/4]clock slave
[145-E1 3/0/4]loopback local
 Config unsuccessfully because illegal parameter!
[145-E1 3/0/4]clock master
[145-E1 3/0/4]loopback local
[145-E1 3/0/4]display controller e1 3/0/4
E1 3/0/4 current state: administratively down
    Line Type: Twisted-pair
  Description: HUAWEI, Quidway Series, E1 3/0/4 Controller
  The BandWidth is 2048 Kbps, the linecode is hdb3,
  Using CE1, framing NO-CRC4, loopback local, clock source master
  Physical Alarm: None
           Error: CVC 0, FEC 0
Root Cause
Null
Suggestions
Null

END