User Manual

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NETGEAR M4500 Series Switches CLI Command Reference Manual 955
Default 1 seconds
Mode Router OSPFv3 Config
8.4.2.30. auto-cost reference-bandwidth
By default, OSPF computes the link cost of each interface from the interface bandwidth. Faster links have lower
metrics, making them more attractive in route selection. The configuration parameters in the auto-cost
reference bandwidth and bandwidth commands give you control over the default link cost. You can configure for
OSPF an interface bandwidth that is independent of the actual link speed. A second configuration parameter
allows you to control the ratio of interface bandwidth to link cost. The link cost is computed as the ratio of a
reference bandwidth to the interface bandwidth (ref_bw /interface bandwidth), where interface bandwidth is
defined by the bandwidth command. Because the default reference bandwidth is 100 Mbps, OSPF uses the same
default link cost for all interfaces whose bandwidth is 100 Mbps or greater. Use the auto-cost command to
change the reference bandwidth, specifying the reference bandwidth in megabits per second (Mbps). The
reference bandwidth range is 14294967 Mbps. The different reference bandwidth can be independently
configured for OSPFv2 and OSPFv3.
To set the reference bandwidth to the default value, use the no form of this command.
Format auto-cost reference-bandwidth <1-4294967>
no auto-cost reference-bandwidth
Default 100Mbps
Mode Router OSPFv3 Config
8.4.2.31. bfd
This command configures BFD for all interfaces.
To reset BFD for interfaces to default, use the no form of this command.
Fields
Definition
<areaid>
Area ID.
<neighborid>
Router ID of the neighbor.
<0-3600>
The range of the retransmit interval is 0 to 3600, in seconds.
Fields
Definition
<1-4294967>
The range of reference bandwidth.