3Com 3031 Command Reference Manual page 623

The silent-interface command is only used to restrain the IS-IS packets not to be
sent on the interface, but the interface routes still can be sent from other
interfaces.
Example
Prohibit the IS-IS packets to be transmitted via Interface Ethernet1/0/0.
[3Com-isis] silent-interface Ethernet1/0/0
spf-delay-interval
Syntax
spf-delay-interval number
undo spf-delay-interval
View
IS-IS view
Parameter
Description
Using the spf-delay-interval command, you can configure the interval for actively
releasing CPU in the SPF calculation. Using the undo spf-delay-interval command,
you can restore the default setting.
When there are a large number of routes in the routing table, this command can
be used to set that CPU resources are released automatically after a certain
number of routes are processed. The unprocessed routes will be processed in one
second.
The value of the parameter number can be adjusted according to the capacity of
the routing table. If the spf-slice-size command is also configured, the SPF
calculation will be paused when any setting item is met.
By default, CPU is released once when every 5000 pieces of routes are processed.
For the related command, see spf-slice-size.
Example
Set IS-IS to release CPU once after processing every 3000 pieces of routes.
[3Com-isis] spf-delay-interval 3000
spf-slice-size
Syntax
spf-slice-size seconds
undo spf-slice-size
View
IS-IS view
Parameter
number: Interval for actively releasing CPU in route calculation. It is in pieces,
ranging from 1000 to 50000. By default, the value is 5000.
seconds: Duration time in seconds for SPF calculation each time in the range
from 0 to 120. When the calculation duration time reaches or exceeds the set
Integrated IS-IS Configuration Commands 623