Black Box LGB6026A, Management Manual

Page: 1145 / 1289

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C
HAPTER
47 | IP Routing Commands
Open Shortest Path First (OSPFv2)
auto-cost reference-
bandwidth
Use this command to calculate the default metrics for an interface based
on bandwidth. Use the
no form to automatically assign costs based on
interface type.
S
YNTAX
auto-cost reference-bandwidth reference-value
no auto-cost reference-bandwidth
reference-value - Bandwidth of interface. (Range: 1-4294967 Mbps)
C
OMMAND
M
ODE
Router Configuration
D
EFAULT
S
ETTING
1 Mbps
C
OMMAND
U
SAGE
◆
The system calculates the cost for an interface by dividing the
reference bandwidth by the interface bandwidth. By default, the cost is
1 Mbps for all port types (including 100 Mbps ports, 1 Gigabit ports,
and 10 Gigabit ports).
◆
A higher reference bandwidth can be used for aggregate links to
indicate preferred use as a lower cost interface.
◆
The ip ospf cost command overrides the cost calculated by the auto-
cost reference-bandwidth command.
E
XAMPLE
This example sets the reference value to 10000, which generates a cost of
100 for 100 Mbps ports, 10 for 1 Gbps ports and 1 for 10 Gbps ports.
Console(config-router)#auto-cost reference-bandwidth 10000
Console(config-router)#
R
ELATED
C
OMMANDS
ip ospf cost (1156)