Enterasys Networks X-Pedition XSR CLI - Manual (Page 521)

Other ADSL Commands
XSR CLI Reference Guide 13-95
oam-pvc
This command enables end‐to‐end F5 (circuit) OAM cell procedures for ATM Permanent Virtual
Circuit (PVC) management. OAM cells and how they are used are as follows:
• Alarm Indication Signal (AIS) – Received from the network to indicate a problem in the
forward‐to‐XSR data flow.
• Continuity Check (CC) – Echoed to the sender when received. The XSR does not generate CC
cells for connectivity management but will respond to CC procedure negotiation cells.
• Loopback – Echoed back to the sender when received. The XSR sends loopback cells to monitor
the end‐to‐end connectivity on the VC.
• Remote Defect Indication (RDI) – Received from the network to indicate a problem in the
reverse‐from‐XSR data flow. Sent to the network to indicate a problem in the local node XSR
as well as in response to any AIS cells received.
The loopback cells monitor and declare the circuit up or down as follows:
• The circuit is UP immediately after line training completes successfully.
• The circuit is declared DOWN when down‐count consecutive loopback response cells are
missed.
• The circuit is declared UP when up‐count consecutive loopback response cells are received.
This command requires a properly configured ATM sub‐interface.
Syntax
oam-pvc [manage][frequency]
Syntax of the “no” Form
The no form of this command disables all OAM procedures for this sub‐interface:
no oam-pvc
Mode
ATM Sub‐Interface configuration: XSR(config-if<ATMx/x/x.x>)#
Defaults
• OAM procedures: Disabled
• Interval between loopback cells (frequency): 10 seconds
• Initial down‐count value: 5
• Initial up‐count value: 3
manage Optional keyword.
frequency Interval between sending end‐to‐end F5 OAM loopback cells when the
VC is in the UP state. Range: 1 to 3600 seconds.