User`s guide

Other Commands
Local Management User’s Guide 3-25
fr:
Syntax: fr
Description: The fr command provides status related to Frame Relay and its Control
Protocols. This allows you to monitor DLCIs and aids troubleshooting.
• MGR: This is the physical WPIM for the DLCI
• CKT: This is the virtual port number for the DLCI
• IF: This is the MIB II interface number for the DLCI
• DLCI: This is the circuit DLCI number
• DCP: This is the state of FR Data Compression on this DLCI (on/
off)
• STATE: This is the DLCI circuit state (active/invalid/inactive)
• Inactive Reason: This value is empty for active/invalid states. It is
filled in if the circuit is inactive. It has the following values:
a. t391 Polling Error: This is a result of a failure in the
Synchronous polling between us and the FR switch. If 3 out of
any 4 polling cycles fail then both will place the link between us
and the FR switch in a “link down” state. This will cause all
DLCIs to be set to inactive, and no data placed on the wire (other
than polling messages) until the service affecting condition is
cleared. This service affecting condition can be the result of a
number of things:
- Our STATUS ENQUIRY message never reaches the FR
switch, due to: our WAN driver, or our physical WAN
connection to the Fr switch dropping the packet for some
reason.
- The STATUS RESPONSE message never reaches the FR
protocol code, due to: our WAN driver, or our physical WAN
connection to the Fr switch, or the FR switch itself dropping
the packet for some reason.
- The incorrect LMI type Si selected at our side or the Fr
switch side. If they do not match, then polling errors will
result.