Brocade TurboIron 24X Series Configuration Guide - Manual (Page 385)

Brocade TurboIron 24X Series Configuration Guide 351
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Dynamic link aggregation
System priority
The system priority parameter specifies the link aggregation priority on the device, relative to the
devices at the other ends of the links on which link aggregation is enabled. A higher value indicates
a lower priority. You can specify a priority from 0 – 65535. The default is 1.
System Priority does not take effect until you toggle the link-aggregate
command.
NOTE
If you are connecting the device to another vendor device and the link aggregation feature is not
working, set the system priority on the device to a lower priority (a higher priority value). In some
cases, this change allows the link aggregation feature to operate successfully between the two
devices.
Port priority
The port priority parameter determines the active and standby links. When a group of ports is
negotiating with a group of ports on another device to establish a trunk group, the port with the
highest priority becomes the default active port. The other ports (with lower priorities) become
standby ports in the trunk group. You can specify a priority from 0 – 65535. A higher value
indicates a lower priority. The default is 1.
NOTE
The primary port in the port group becomes the default active port. The primary port is the
lowest-numbered port in a valid trunk-port group.
Link type
The link type parameter specifies whether the trunk is connecting to a server (server link) or to
another networking device (switch link). The default link type is switch.
Timeout
You can specify a timeout mode, which determines how fast ports are removed from a trunk. You
can specify a short timeout mode.
Key
Every port that is 802.3ad-enabled has a key. The key identifies the group of potential trunk ports
to which the port belongs. Ports with the same key are called a key group and are eligible to be in
the same trunk group.
When you enable link-aggregation on an untagged port, the software assigns a default key to the
port. For tagged ports, you must manually configure link-aggregation keys. Refer to
“Configuring
keys for ports with link aggregation enabled” on page 354.
All ports within an aggregate link must have the same key. However, if the device has ports that are
connected to two different devices, and the port groups allow the ports to form into separate
aggregate links with the two devices, then each group of ports can have the same key while
belonging to separate aggregate links with different devices.
Figure 33 on page 352 shows an
example.