3Com Router 3031, Command Reference Manual

Page: 309 / 838

Frame Relay Configuration Commands 309
Example
Set the operation of frame relay interface Serial1/0/0 as DCE mode and sets N392
to 5 and N393 to 6.
[3Com] interface Serial1/0/0
[3Com-Serial1/0/0] link-protocol fr
[3Com-Serial1/0/0] fr interface-type dce
[3Com-Serial1/0/0] fr lmi n392dce 5
[3Com-Serial1/0/0] fr lmi n393dce 6
fr lmi n392dte Syntax
fr lmi n392dte n392-value
undo fr lmi n392dte
View
Interface view
Parameter
n392-value: Error threshold, which ranges from 1 to 10.
Description
Using the fr lmi n392dte command, you can set N392 parameter at the DTE side.
Using the undo fr lmi n392dte command, you can restore the default
configuration.
By default, the parameter is 3.
The DTE sends a Status-Enquiry packet at a regular interval to the DCE to inquire
the link status. On receiving this packet, the DCE will immediately send a
Status-Response packet. If the DTE does not receive the response packet in the
specified time, it will record the error by adding 1 to the error count. If the errors
exceed the threshold, the DTE will consider that the physical channels and all the
DLCIs to be unavailable.
N392 and N393 together define the “error threshold”. N393 indicates the event
number observed and N392 indicates the error threshold of that number (N393).
That is, if N392 errors occurred in N393 Status-Enquiry packets in the DTE, the DTE
would consider that the error has exceeded the threshold and declare the physical
channels and all DLCIs to be unavailable.
N392 at DTE side should be less than N393 at DTE side.
For the related commands, see fr interface-type and fr lmi n393dte.
Example
Set the operation of frame relay interface Serial1/0/0 as the DTE mode and sets
N392 to 5 and N393 to 6.
[3Com-Serial1/0/0] link-protocol fr