Specifying The Interface Cost; Specifying Intervals - HP procurve 8100fl series Management And Configuration Manual

To override authentication specified at the area level by specifying the
■
authentication method at the interface level, enter:
ProCurve(config-if)#ip ospf authentication null
Specifying null turns off authentication for this interface even if area
authentication is specified.

Specifying the Interface Cost

The switch calculates the default cost of an OSPF interface using the reference
bandwidth and the interface bandwidth. The default reference bandwidth is
1000 Mbps. It can be changed by using the auto-cost reference-bandwidth
command.
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 = reference bandwidth * 1,000,000/ interface bandwidth (in bps)
The following is a table of the port types and the OSPF default cost associated
with each type:
Port Media Type
Ethernet 1000
Ethernet 10/100
Ethernet 10/100
To specify the cost to this interface (and override any automatically
configured cost), enter:
ProCurve(config-if)#ip ospf cost <num>

Specifying Intervals

OSPF allows you to control transmitting advertisements and waiting for other
routers to send updates.
■ To limit the time to wait for a neighbor before declaring it dead, enter:
ProCurve(config-if)#ip ospf dead-interval <num>
Configuring OSPF Router Parameters
Speed OSPF Default Cost
1000 Mbps 1
100 Mbps 10
10 Mbps 100
OSPF Configuration
13-13