Parameter: Loopback
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| − | The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values: | + | The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values: |
| − | + | {| cellspacing="1" cellpadding="1" border="2" style="width: 829px; height: 185px;" | |
| − | + | |- | |
| + | ! scope="col" | Loopback Type<br> | ||
| + | ! scope="col" | Description<br> | ||
| + | ! scope="col" | Behavior<br> | ||
| + | ! scope="col" | When shoud we use it?<br> | ||
| + | |- | ||
| + | | NONE<br> | ||
| + | | Normal Operation<br> | ||
| + | | All traffic is received and sent on the line<br> | ||
| + | | Always<br> | ||
| + | |- | ||
| + | | LINE<br> | ||
| + | | Analog Line Loopback<br> | ||
| + | | All received traffic is re-routed on the transmit line. The clock and data recovered from the line inputs are routed back to the line outputs of the analog transceiver bypassing the framer modules<br> | ||
| + | | First step in testing a physical connection<br> | ||
| + | |- | ||
| + | | PAYLOAD<br> | ||
| + | | Digital Line Loopback<br> | ||
| + | | All received traffic is re-routed on the transmit line.The clock and data recovered from the line inputs are routed back to the line outputs after the deframer/framer.<br> | ||
| + | | Second step in testing a physical connection. This tests the framer configuration.<br> | ||
| + | |- | ||
| + | | GENERATE_LOS<br> | ||
| + | | Generate Loss of Signal<br> | ||
| + | | This forces the transmit line to stop sending<br> | ||
| + | | This is the second-best thing to disconnecting the line interface physically.<br> | ||
| + | |- | ||
| + | | LOCAL<br> | ||
| + | | Local Loopback<br> | ||
| + | | All received traffic is dropped. The traffic sent is re-routed internally. <br> | ||
| + | | Never. Used for internal testing only.<br> | ||
| + | |} | ||
| + | |||
| + | <br> | ||
| + | |||
| + | To change the Loopback parameter from the Web Portal: | ||
| + | <pre>Line Interfaces -> Line Services (Choose) -> Status Tab -> Loopback -> Apply States | ||
| + | </pre> | ||
| + | To see the status from the Web portal:<br> | ||
| + | <pre>Line Interfaces -> Status tab | ||
| + | </pre> | ||
| + | <br> | ||
| + | |||
| + | <br> | ||
[[Category:Parameters]] | [[Category:Parameters]] | ||
Latest revision as of 08:06, 10 May 2011
The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values:
| Loopback Type |
Description |
Behavior |
When shoud we use it? |
|---|---|---|---|
| NONE |
Normal Operation |
All traffic is received and sent on the line |
Always |
| LINE |
Analog Line Loopback |
All received traffic is re-routed on the transmit line. The clock and data recovered from the line inputs are routed back to the line outputs of the analog transceiver bypassing the framer modules |
First step in testing a physical connection |
| PAYLOAD |
Digital Line Loopback |
All received traffic is re-routed on the transmit line.The clock and data recovered from the line inputs are routed back to the line outputs after the deframer/framer. |
Second step in testing a physical connection. This tests the framer configuration. |
| GENERATE_LOS |
Generate Loss of Signal |
This forces the transmit line to stop sending |
This is the second-best thing to disconnecting the line interface physically. |
| LOCAL |
Local Loopback |
All received traffic is dropped. The traffic sent is re-routed internally. |
Never. Used for internal testing only. |
To change the Loopback parameter from the Web Portal:
Line Interfaces -> Line Services (Choose) -> Status Tab -> Loopback -> Apply States
To see the status from the Web portal:
Line Interfaces -> Status tab
