3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 3 OSPF Configuration Commands
3-54
Parameter
interval: SPF calculation interval of OSPF, in seconds. It ranges from 1 to 10 and
defaults to 5.
Description
Use the spf-schedule-interval command to configure the route calculation interval of
OSPF.
Use the undo spf-schedule-interval command to restore the default setting.
According to the Link State Database (LSDB), the router running OSPF can calculate
the shortest path tree taking itself as the root and determine the next hop to the
destination network according to the shortest path tree. Adjusting SPF calculation
interval restrains frequent network changes, which may occupy too many bandwidth
resources and router resources.
Example
# Set the OSPF route calculation interval of 3Com to 6 seconds.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] ospf 1
[3Com-ospf-1] spf-schedule-interval 6
3.1.50 stub Syntax
stub [ no-summary ]
undo stub
View
OSPF Area view
Parameter
no-summary: Disables an ABR from transmitting Summary LSAs to the STUB area.
Description
Use the stub command to configure the type of an OSPF area as "stub".
Use the undo stub command to cancel the settings.
By default, no area is set to be the STUB area.
If the router is an ABR, it will send a default route to the connected stub area . Use the
default-cost command to configure the default route cost. In addition, you can