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When you configure OAM CC on a PVC, configure one end of the PVC as the CC cell source and the
other end as the CC cell sink.
On an OAM CC-enabled PVC, if the detecting end fails to receive CC cells within 3 seconds, the state
of the PVC changes to down and will change to up only after CC cells or packets are received again.
When disabling OAM CC on a PVC, make sure that the role of the PVC in continuity check is the same
as the one that has been enabled. For example, if you have enabled the PVC as both the CC cell source
and the sink, you should perform the
undo
oam cc end-to-end both
command rather than the
undo
oam
cc end-to-end
sink
command to disable the function.
This command cannot be configured on the member PVCs in a PVC group.
Examples
# Enable OAM CC.
<Sysname> system-view
[Sysname] interface Atm 3/1/1
[Sysname-Atm3/1/1] pvc 1/32
[Sysname-atm-pvc-Atm3/1/1-1/32] oam cc end-to-end sink
oam frequency
Syntax
oam frequency
frequency
[
up
up-count
down
down-count
retry-frequency
retry-frequency
]
undo oam frequency
View
PVC view
Default level
2: System level
Parameters
frequency
: Interval in seconds for sending OAM F5 Loopback cells, in the range of 0 to 600. When the
interval is set to 0, no OAM F5 loopback cells are sent.
up
up-count
: Specifies that the PVC goes up when the number of successive OAM F5 loopback cells
received correctly reaches the value specified by the
up-count
argument. The value range for the
up-count
argument is 1 to 600, and the default is 3.
down
down-count
: Specifies that the PVC goes down when the number of successive OAM F5 loopback
cells that it fails to receive reaches the value specified by the
down-count
argument. The value range for
the
down-count
argument is 1 to 600, and the default is 5.
retry-frequency
retry-frequency
: Specifies the interval (in seconds) at which OAM F5 loopback cells
should be transmitted to verify a change in the PVC state (up/down). The value range is 1 to 1000. The
default is 1.
Description
Use the
oam frequency
command to enable the transmission and retransmission detection of OAM F5
Loopback cells, as well as to modify the related parameters.
Use the
undo oam frequency
command to disable the transmission and retransmission detection of OAM
F5 Loopback cells.
