Loopback test

179172max · ‎08-31-2007

Hi all,

What is different between HDLC loopback test ( pins assignment 1,2,4,5) and ELL loopback test ( pins assignmet 1,2,3,6)?

How many type of loopback test ?

Is depend on interface type?

Thanks,

Max

purohit_810 · ‎08-31-2007

See loopback test we can do too many ways... depend upon our analytical skill.

Basic purpose to do Loopback is complete the curcuit and see response. That you can use for troubleshooting on hop to hop and analyse the problem point of area.

Most od types are :

loopback (controller el)

loopback local (controller)

loopback local (interface)

loopback remote (controller)

and you can test them by http://www.cisco.com/en/US/products/ps6441/products_command_reference_chapter09186a00804a3c48.html#wp1007856

You can also test Interfaces by using commands

sh test {MOD}

show diagnostics mod (MOD)

For above command referance you can see on:

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a008015bfd6.shtml

Regards,

Dharmesh Purohit