Port Priority - Dell PowerConnect B-FCXs Configuration Manual

NOTE
If you are connecting the Dell PowerConnect device to another vendor device and the link
aggregation feature is not working, set the system priority on the Dell PowerConnect 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 Dell
PowerConnect 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
This parameter is not supported in the current software release. 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.
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
keys for ports with link aggregation enabled"
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.
example.
PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Dynamic link aggregation
on page 420.
Figure 84
12
"Configuring
on page 418 shows an
417