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HS08
HS08
Contributor III
September 11, 2024
Question

OSPF Cost

  • September 11, 2024
  • 2 replies
  • 2357 views

Hello,

 

What default bandwidth reference for OSPF in fortigate?

2 replies

Jackie_T
Staff & Editor
Jackie_T
Staff & Editor
September 11, 2024

Hello HS08,

 

I believe you are looking for the default value for ospf cost bandwidth reference in FortiOS?

There is a setting under "config router ospf" >> "set auto-cost-ref-bandwidth".

The default value set is 1000, in megabits per second.

 

Reference doc: https://docs.fortinet.com/document/fortigate/7.6.0/cli-reference/103419153/config-router-ospf

 

HS08
HS08Author
Contributor III
September 11, 2024

Ok so default reference in fortiOS is 1Gbps. If i have topology below where the fortigate connected to cisco router. Default OSPF reference bandwidth in cisco is 100Mbps, so we have 2 different reference bandwidth here.

With this scenario what cost from R1 to Fortigate? Which reference bandwidth will be used?

forti1.png

 

 

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