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Chapter 7: OSPF Configuration Guide
OSPF Multipath
The IA also supports OSPF and static Multi-path. If multiple equal-cost OSPF or static
routes have been defined for any destination, then the IA discovers and uses all of them.
The IA will automatically learn up to four equal-cost OSPF or static routes and retain
them in its forwarding information base (FIB). The forwarding module then installs flows
for these destinations in a round-robin fashion.
Configuring OSPF
To configure OSPF on the IA, you must enable OSPF, create OSPF areas, assign interfaces
to OSPF areas, and, if necessary, specify any of the OSPF interface parameters.
To configure OSPF, you may need to perform some or all of the following tasks:
•
Enable OSPF.
•
Create OSPF areas.
•
Create an IP interface or assign an IP interface to a VLAN.
•
Add IP interfaces to OSPF areas.
•
Configure OSPF interface parameters, if necessary.
Note:
By default, the priority of an OSPF router for an interface is set to zero, which
makes the router ineligible from becoming a designated router on the network to
which the interface belongs. To make the router eligible to become a designated
router, you must set the priority to a non-zero value.
The default cost of an OSPF interface is 1. The cost of the interface should be
inversely proportional to the bandwidth of the interface; if the IA has interfaces
with differing bandwidths, the OSPF costs should be set accordingly.
•
Add IP networks to OSPF areas.
•
Create virtual links, if necessary.
Enabling OSPF
OSPF is disabled by default on the IA.
To enable or disable OSPF, enter one of the following commands in Configure mode.
Enable OSPF.
Disable OSPF.
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ospf start
ospf stop
Internet Appliance User Reference Manual
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