Cisco 6000 Series Configuration Manual page 63

Configuring Ethernet OAM
Command or Action
RP/0/RP0/CPU0:router(config-eoam-lm)# frame window
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Step 7 frame threshold low threshold high threshold
Example:
RP/0/RP0/CPU0:router(config-eoam-lm)# frame
threshold low 10000000 high 60000000
Step 8 frame-period window window
Example:
RP/0/RP0/CPU0:router(config-eoam-lm)# frame-period
window 60000
RP/0/RP0/CPU0:router(config-eoam-lm)# frame-period
window milliseconds 60000
Step 9 frame-period threshold lowthreshold high threshold
Example:
RP/0/RP0/CPU0:router(config-eoam-lm)#
frame-period threshold low 100 high 1000000
Interface and Hardware Component Configuration Guide for Cisco NCS 6000 Series Routers, IOS XR Release 6.4.x
Configuring an Ethernet OAM Profile
Purpose
The default value is 1000.
(Optional) Configures the thresholds (in symbols) that
triggers an Ethernet OAM frame error event. The high
threshold is optional and is configurable only in
conjunction with the low threshold.
The range is from 0 to 60000000.
The default low threshold is 1.
(Optional) Configures the window size (in milliseconds)
for an Ethernet OAM frame-period error event. The IEEE
802.3 standard defines the window size as number of
frames rather than a time duration. These two formats can
be converted either way by using a knowledge of the
interface speed. Note that the conversion assumes that all
frames are of the minimum size.
The range is from 100 to 60000.
The default value is 1000.
Note The only accepted values are multiples of the
line card-specific polling interval, that is, 1000
milliseconds for most line cards.
(Optional) Configures the thresholds (in errors per million
frames ) that trigger an Ethernet OAM frame-period error
event. The frame period window is defined in the IEEE
specification as a number of received frames, in our
implementation it is x milliseconds. The high threshold is
optional and is configurable only in conjunction with the
low threshold.
The range is from 0 to 1000000.
The default low threshold is 1.
To obtain the number of frames, the configured time
interval is converted to a window size in frames using the
interface speed. For example, for a 1Gbps interface, the
IEEE defines minimum frame size as 512 bits. So, we get
a maximum of approximately 1.5 million frames per
second. If the window size is configured to be 8 seconds
(8000ms) then this would give us a Window of 12 million
frames in the specification's definition of Errored Frame
Window.
The thresholds for frame-period are measured in errors per
million frames. Hence, if you configure a window of
8000ms (that is a window of 12 million frames) and a high
threshold of 100, then the threshold would be crossed if
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