Alcatel-Lucent 7710 SR SONET, Configuration Manual

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Interface Configuration
7710 SR OS Interface Configuration Guide Page 303
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 LAG member port.
distribute — Creates an additional internal virtual scheduler per IOM as parent of the
configured SAP queues and vitual schedulers per LAG member port on that IOM. This
internal virtual scheduler limits the total amount of egress bandwidth for all member ports
on the IOM to the bandwidth specified in the egress qos policy.
dynamic-cost
Syntax [ no ] dynamic-cost
Context config>lag lag-id
Description
This command enables OSPF/ISIS 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 phys-
ical links. The cost associated with the logical link is 25. If one link fails then the cost would automati-
cally be adjusted to 33.