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Chapter 2: Virtual Chassis Stacking
82
For a mixed stack of 28- or 52-port switches, the trunk ports have
to be SFP+ ports.
The switches should have AlliedWare Plus v5.4.9 or later.
You have to install stack mixed-mode licenses on all the switches.
You have to perform the STACK MIXED-MODE command on all
the switches so that they operate with the same base set of
features.
If you break-up a mixed stack or remove the x530L switches,
perform the NO STACK MIXED-MODE command on the x530 and
x530DP switches to restore their full feature sets.
If you break-up a mixed stack or remove the x530L switches, you
can leave the stack mixed-mode licenses on the switches. They
will not interfere with switch operations.
The STACK MIXED-MODE and NO STACK MIXED-MODE
commands require rebooting the switch.
Mixed stacks do not support premium licenses.
Mixed stacks do support the G8032 ring protection and continuous
PoE power licenses.
If optional licenses are installed on the switches, all the units must
have the same licenses. Switches that have different feature
licenses might still be able to form the stack, but the feature
inconsistencies are logged and appear in the show license output.
A mixed stack generates the following log message if the STACK
MIXED-MODE command was not performed on all the switches:
16:22:21 awplus VCS[1631]: Member 1 cannot join the
stack because of stack mixed mode incompatibility.
Enable 'stack mixed-mode'.
The trunk for a mixed stack can have a minimum of two ports and a
maximum of eight ports per switch.
Trunk ports are designated with the STACKPORT command in the
Port Interface mode.
If you designate more than eight ports as trunk ports on a switch,
only the first eight ports function as trunk ports.
If you designate less than two ports for the trunk on a switch, the
default trunk ports are used instead.
A trunk should not contain both 5Gbps twisted pair ports and
10Gbps SFP+ ports. Network performance will be unpredictable.
A trunk should not connect a switch to more than two other stack
members. Building a mesh configuration where a member switch
is directly connected to more than two other members is not
supported and can cause unpredictable behavior.
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