Configuration Of A Lag - Dell PowerConnect B-RX Configuration Manual

8

Configuration of a LAG

Configuration of a LAG
The following configuration procedures are used to configure a LAG. Depending upon whether you
are configuring a static, dynamic or keep-alive LAG, the configuration procedures may or may not
apply as described:
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a. A dynamic LAG is created by grouping all ports in the original configuration having the
same link-aggregation key.
b. If link-aggregate active/passive is configured originally, the converted dynamic LAG will be
configured as deployed. Otherwise it will not be converted because such ports were
originally not operating under LACP.
c. If the original mode is passive, the converted dynamic LAG will be configured as deploy
passive. Otherwise active mode is the default.
d. The timeout configuration set by the command link-aggregate configure timeout will be
converted to the lacp-timeout command.
e. Individual port priority set by the command link-aggregate configure port-priority will be
converted to the lacp-port-priority command.
f. While the value of the link-aggregate configure key command is used in the conversion in
determining the set of ports that form an LAG, in the new LAG user interface, there is no
need for a user to explicitly configure a key. Each dynamic LAG will automatically select a
unique key for the system. Hence the original configured key will not be retained.
g. The command link-aggregate configure system-priority is retired and will not be directly
converted. This value is currently not in use by the system's LACP protocol processing, and
will maintain a default value of 1.
h. The lowest-numbered port will be selected as the primary port of the LAG.
i. The load balancing scheme in the command link-aggregate configure type is automatically
converted to the default hash-based load balancing scheme.
j. Port names configured in the original interface configuration will be converted to port
names within the LAG.
k. The converted LAG will be named "LAG_x", where "x" is a unique number assigned by the
system starting from 1.
Creating a Link Aggregation Group – Required for all static, dynamic or keep alive LAGs.
Adding Ports to a LAG – Required for all static, dynamic, or keep alive LAGs. A keep alive LAG
contains only one port with static and dynamic LAGs can have 2 to 8 ports.
Configuring the Primary Port for a LAG – Required for all static and dynamic LAGs. Since a keep
alive LAG contains only one port, it is unnecessary to configure this parameter.
Specifying the Trunk Threshold for a Trunk Group – Optional for static and dynamic LAGs. Since
a keep alive LAG contains only one port, it is unnecessary to configure this parameter.
Configuring LACP Port Priority – Optional for dynamic and keep alive LAGs. Because static LAGs
do not support LACP, it is unnecessary to configure this parameter.
Configuring an LACP Timeout – Optional for dynamic and keep alive LAGs. Because static LAGs
do not support LACP, it is unnecessary to configure this parameter.
BigIron RX Series Configuration Guide
53-1001810-01