Dell PowerConnect B-FCXs Configuration Manual page 460

12
Dynamic link aggregation
FIGURE 84
Notice that the keys between one device and another do not need to match. The only requirement
for key matching is that all the ports within an aggregate link on a given device must have the same
key.
Devices that support multi-slot trunk groups can form multi-slot aggregate links using link
aggregation. However, the link aggregation keys for the groups of ports on each module must
match. For example, if you want to allow link aggregation to form an aggregate link containing ports
1/1 – 1/4 and 3/5 – 3/8, you must change the link aggregation key on one or both groups of ports
so that the key is the same on all eight ports.
418
Ports with the same key in different aggregate links
Port1/1
Port1/2
Port1/3
All these ports have
the same key, but are
Port1/4
in two separate
aggregate links with
Port1/5
two other devices.
Port1/6
Port1/7
Port1/8
System ID: aaaa.bbbb.cccc
Ports 1/1 - 1/8 Key 0
System ID: dddd.eeee.ffff
Ports 1/5 - 1/8: Key 4
System ID: 1111.2222.3333
Ports 1/5 - 1/8: Key 69
Figure 85 on page 419 shows an example.
PowerConnect B-Series FCX Configuration Guide
53-1002266-01