5000 Series Layer 2/3 Managed Data Center Switch CLI Reference Guide
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7-138 auto-cost (OSPF)
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 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).
No
command sets the reference bandwidth to the default value.
auto-cost reference-bandwidth 1-4294967
no auto-cost reference-bandwidth
Parameters
None
Default
The default is 100 Mbps.
Command Mode
Router OSPF Config
7-139 capability opaque
Enable Opaque Capability on the Router. The information contained in Opaque LSAs may be used
directly by OSPF or indirectly by an application wishing to distribute information throughout the OSPF
domain. D-LINK OS supports the storing and flooding of Opaque LSAs of different scopes. The default
value of enabled means that OSPF will forward opaque LSAs by default. If you want to upgrade from a
previous release, where the default was disabled, opaque LSA forwarding will be enabled. If you want to
disable opaque LSA forwarding, then you should enter the command no capability opaque in OSPF
router configuration mode after the software upgrade.
No
command disables opaque capability on the router.
capability opaque
no capability opaque
Parameters
None
Default
The default is Enabled.
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