3com MSR 20-20 참조 매뉴얼
392
C
HAPTER
22: F
RAME
R
ELAY
C
ONFIGURATION
C
OMMANDS
Example
# Set frame relay interface Serial 2/0 to operate in DCE mode and set N392 to 5
and N393 to 6.
and N393 to 6.
<Sysname> system-view
[Sysname] interface serial2/0
[Sysname-Serial2/0] link-protocol fr
[Sysname-Serial2/0] fr interface-type dce
[Sysname-Serial2/0] fr lmi n392dce 5
[Sysname-Serial2/0] fr lmi n393dce 6
fr lmi n392dte
Syntax
fr lmi n392dte n392-value
undo fr lmi n392dte
View
Interface view
Parameter
n392-value: The value of N392 parameter at the DTE side. It ranges from 1 to 10.
Description
Use the fr lmi n392dte command to set N392 parameter at the DTE side.
Use the undo fr lmi n392dte command to restore the default.
By default, the parameter value 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.
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 had exceeded the threshold and declare the physical
channels and all DLCIs to be unavailable.
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 had 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.
Example
# Set the operation of frame relay interface Serial 2/0 as the DTE mode and set
N392 to 5 and N393 to 6.
N392 to 5 and N393 to 6.
<Sysname> system-view
[Sysname] interface serial2/0
[Sysname-Serial2/0] link-protocol fr
[Sysname-Serial2/0] fr interface-type dce
[Sysname-Serial2/0] fr lmi n392dce 5
[Sysname-Serial2/0] fr lmi n393dce 6