A higher bandwidth indicates a lower cost, and a lower-cost path is the preferred route. The formula used to
calculate the OSPF cost is
OSPF Cost = 100,000,000 ?ยท bandwidth (in bps)
As shown in Figure 6-9, redistribution between the two OSPF processes is supported. Static and connected
routes on the Security Appliance can also be redistributed into the OSPF process, but they must be configured
on OSPF-enabled interfaces.
Configuring OSPF
As per the Figure 6-9 network diagram, OSPF can be configured on the inside and outside interfaces.
Note
RIP and OSPF on the same firewall appliance was not supported in version 7.0 or prior. However,
multiprotocol is now fully supported from v7.2 and later, as illustrated in Figure 6-9.
Example 6-8 shows how to enable two separate OSPF processes with mutual two-way redistribution to allow
devices on both sides of the Security Appliance to learn networks from each other.
Example 6-8. Configuring Two OSPF Processes (for Inside and Outside Interfaces) with Two-Way
Redistribution
hostname(config)# router ospf 1
hostname(config-router)# network 10.1.1.0 255.255.255.0 area 0
hostname(config-router)# redistribute ospf 2 metric 1 subnets
hostname(config)# router ospf 2
hostname(config-router)# network 10.
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