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Software Configuration Guide—Release 15.0(2)SG
OL-23818-01
Chapter 57 Configuring Ethernet OAM and CFM Enabling and Configuring Ethernet OAM
The ethernet oam link-monitor transmit-crc {threshold {high {high-frames | none} | low
{low-frames}} | window milliseconds} command is visible on the switch and you can enter it, but it is
not supported. Enter the no form of the command to disable the configuration. Use the no form of each
command to disable the threshold setting.
Symbol error counters are supported on the following line cards and supervisor engine cards:
• Supervisor engine cards: WS-X4515, WS-X4516, WS-X4013+, WS-X4013+TS, WS-X4516-10GE,
WS-X4013+10GE
• Line cards: WS-X4148-RJ, WS-X4124-RJ, WS-X4232, WS-X4232-RJ-XX, WS-X4148-RJ21,
WS-X4504-FX-MT, WS-X4224-RJ21-XX, WS-X4124-FX-MT, WS-X4232-L3
The rest of the cards do not support symbol error counters.
This example shows how to configure Ethernet OAM link monitoring:
Switch(config)# interface g1/1
Switch(config-if)# ethernet oam link-monitor receive-crc threshold high 1000
Switch(config-if)# ethernet oam link-monitor receive-crc threshold low 10
Switch(config-if)# ethernet oam link-monitor symbol-period threshold high 5000
Switch(config-if)# ethernet oam link-monitor symbol-period threshold low 5
Switch(config-if)# ethernet oam link-monitor frame threshold high 8000
Switch(config-if)# ethernet oam link-monitor frame threshold low 8
Switch(config-if)# ethernet oam link-monitor frame-period threshold hig 9000
Switch(config-if)# ethernet oam link-monitor frame-period threshold low 9
Switch# show ethernet oam status int gi1/1
Step 8 Switch(config-if)# ethernet oam link-monitor
receive-crc {threshold {high {high-frames |
none} | low {low-frames}} | window milliseconds}
Repeat this step to configure both high and low
thresholds.
(Optional) Configures thresholds for monitoring ingress
frames received with cyclic redundancy code (CRC) errors
for a period of time.
• Enter threshold high high-frames to set a high
threshold for the number of frames received with CRC
errors. The range is 1 to 65535 frames.
• Enter threshold high none to disable the high
threshold.
• Enter threshold low low-frames to set a low threshold
in number of frames. The range is 0 to 65535. The
default is 1.
• Enter window milliseconds to set the a window and
period of time during which frames with CRC errors
are counted. The range is 10 to 1800 and represents the
number of milliseconds in multiples of 100. The
default is 100.
Step 9 Switch(config-if)# [no] ethernet link-monitor
on (Optional) Starts or stop (when the no keyword is entered)
link-monitoring operations on the interface. Link
monitoring operations start automatically when support is
enabled.
Step 10 Switch(config-if)# end Returns to privileged EXEC mode.
Step 11 Switch# show ethernet oam status [interface
interface-id]Verifies the configuration.
Step 12 Switch# copy running-config startup-config (Optional) Saves your entries in the configuration file.
Command Purpose