Parameters
2.4
Enter the keyword
2.4
to set the epoch to 2.4 micro-seconds and
lower the latency. This option is available on the E600i and E1200i E-
Series ExaScale systems only.
3.2
Enter the keyword
3.2
to set the epoch to 3.2 micro-seconds and
lower the latency. This option is available on the E600/E600i and
E1200/E1200i only. ExaScale does not supports this setting with FTOS
8.3.1.0 and later.
10.4
Enter the keyword
10.4
to set the epoch to 10.4 micro-seconds. This
is the default setting and is available on the E300, E600/E600i, and
E1200.
Defaults
10.4
Command Modes
CONFIGURATION
Command History
Version 8.3.1.0
Added the 2.4 micro-seconds option. ExaScale supports only 10.4
microseconds and 2.4 microseconds with FTOS 8.3.1.0 and later.
Version 8.1.1.2
Introduced on the E-Series ExaScale E600i.
Version 8.1.1.0
Introduced on the E-Series ExaScale E1200i.
Version 6.2.1.1
Introduced on the E-Series E300 (10.4 only).
Version 6.1.1.0
Values changed as described above.
Usage
Information
Save the configuration and reload the chassis for the changes to the
epoch
command setting
to take affect.
When using ten SFMs in an ExaScale chassis, the
10.4
and
2.4
settings are both line rate.
Additionally, the
2.4
setting has a lower latency.
When using nine SFMs in an ExaScale chassis, the
10.4
setting is line rate and the
2.4
setting reduces throughput. When the system has nine SFMs, Dell Force10 recommends using
the
10.4
setting.
Using eight SFMs in an ExaScale chassis reduces throughput at any epoch setting.
NOTE: The E300 supports only the
10.4
epoch setting. The E-Series TeraScale E600/E600i
and the E1200/E1200i systems support the
10.4
and
3.2
epoch settings.
NOTE: For E-Series ExaScale, the
2.4
setting is supported on FTOS version 8.3.1.0 and
later. The
10.4
setting is supported on all ExaScale FTOS versions. The
3.2
setting is
only supported on FTOS versions 8.2.1.0 and earlier.
110
Summary of Contents for Force10 Z9000
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