Allied Telesis AT-x950-28XSQ, Installation Manual

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AT-x950-28XSQ Switch and VCStack Installation Guide
57
Figure 33. Invalid Stack Trunk of Transceivers in AT-XEM2-12XS Line
Card and 10Gbps Base Slots

A stack trunk cannot have both base 40Gbps or 100Gbps links and
ports on AT-XEM2-4QS or AT-XEM2-1CQ Line Cards. An example
of an invalid of trunk of two 100Gbps links is shown in Figure 34.
Figure 34. Invalid 100Gbps Stack Trunk of Base 100Gbps Slots and AT-
XEM2-1CQ Line Cards
 Allied Telesis does not recommend using the AT-XEM2-1CQ Line
Card for a stack trunk because it has only one transceiver slot and
the switch has only one expansion slot. Consequently, the trunk
would have only one link. Refer to Figure 35 on page 57. Instead,
to build a 100Gbps stack trunk, use two base 40/100Gbps
transceiver slots, as illustrated in Figure 27 on page 54.
Figure 35. Not Recommended Stack Trunk Using AT-XEM2-1CQ Line
Cards
10Gbps
100Gbps 100Gbps
100Gbps