Cisco Catalyst 4500 Series Administration Guide

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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL-28731-01
Chapter 66 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

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E