User Manual

Enterasys X-Pedition User Reference Manual 183
Configuring OSPF
Enabling OSPF
OSPF is disabled by default on the XP.
To enable or disable OSPF, enter one of the following commands in Configure mode.
Configuring OSPF Interface Parameters
You can configure the OSPF interface parameters shown in the table below.
Default Cost of an OSPF Interface
The default cost of an OSPF interface is calculated using its bandwidth. A VLAN that is attached to
an interface could have several ports of differing speeds. The bandwidth of an interface is
represented by the highest bandwidth port that is part of the associated VLAN. The cost of an
OSPF interface is inversely proportional to this bandwidth. The cost is calculated using the
following formula:
Cost = 2000000000 / speed (in bps)
Enable OSPF.
ospf start
Disable OSPF.
ospf stop
Table 9. OSPF Interface Parameters
OSPF Parameter Default Value
Interface OSPF State (Enable/Disable) Enable (except for virtual links)
Cost See Default Cost of an OSPF Interface below.
No multicast Default is using multicast mechanism.
Retransmit interval 5 seconds
Transit delay 1 second
Priority 1
Hello interval 10 seconds (broadcast), 30 (non broadcast)
Router dead interval 4 times the hello interval
Poll Interval 120 seconds
Key chain N/A
Authentication Method None