OSPF Interface Costs 7/20 Flashcards
1
Q
100MB Ethernet and Faster
A
1
2
Q
10MB Ethernet
A
10
3
Q
E1
A
48
4
Q
T1
A
64
5
Q
In OSPF how do you change the interface cost using the reference bandwidth?
A
- router ospf 1
- auto-cost reference-bandwidth
6
Q
What is the formula OSPF uses to calculate interface cost?
A
- Reference bandwidth Kbps / Interface bandwidth Kbps = cost
- Default reference bandwidth is 100,000 kbps
7
Q
What are 3 ways to change the cost of an interface?
A
- manually on the interface ‘ip ospf cost ‘
- by changing bandwidth on the interface in Kbps
- by changing the reference bandwidth
