Interface Configuration
7750 SR OS Interface Configuration Guide
Page 293
access
Syntax
access
Context
config>lag
Description
This command enables the context to configure access parameters.
adapt-qos
Syntax
adapt-qos
type
Context
config>lag>access
Description
This command specifies how the LAG SAP queue and virtual scheduler buffering and rate parameters
are adapted over multiple active MDAs. This command applies only to access LAGs.
Default
distribute
Parameters
type —
Specify the QoS adaptation type.
Values
link
— Specifies that the LAG will create the SAP queues and virtual schedulers
with the actual parameters on each MDA.
distribute
— Specifies that each MDA will receive a fraction of the SAP and
scheduler parameters.
dynamic-cost
Syntax
[
no
]
dynamic-cost
Context
config>lag
lag-id
Description
This command enables OSPF costing of a Link Aggregation Group (LAG) based on the available
aggregated, operational bandwidth.
The path cost is dynamically calculated based on the interface bandwidth. OSPF path cost can be
changed through the interface metric or the reference bandwidth.
If dynamic cost is configured, then costing is applied based on the total number of links configured
and the cost advertised is inversely proportional to the number of links available at the time. This is
provided that the number of links that are up exceeds the configured LAG threshold value at which
time the configured threshold action determines if, and at what cost, this LAG will be advertised.
For example:
Assume a physical link in OSPF has a cost associated with it of 100, and the LAG consists of
four physical links. The cost associated with the logical link is 25. If one link fails then the cost
would automatically be adjusted to 33.
If dynamic cost is not configured and OSPF autocost is configured, then costing is applied based on
the total number of links configured. This cost will remain static provided the number of links that are
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