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Chapter 2: Virtual Chassis Stacking
10Gbps
40Gbps
56
1. The AT-XEM2-12XT Line Card supports both 1Gbps and 10Gbps on its ports.
However, static trunks require 10Gbps.
2. The AT-XEM2-12XS Line Card supports both 1Gbps SFP and 10Gbps SFP+
transceivers. However, static trunks require 10Gbps SFP+ transceivers.
Figure 31 is an example of a stack trunk of four 10Gbps links on
AT-XEM2-12XT Line Cards.
Figure 31. Example of a Stack Trunk Using AT-XEM2-12XT Line Cards
Figure 32 is an example of a stack trunk of two 40Gbps links on
AT-XEM2-4QS Line Cards.
Figure 32. Example of a Stack Trunk Using AT-XEM2-4QS Line Cards
A trunk cannot have ports from both AT-XEM2-12XS Line Cards
and base 10Gbps transceiver slots. The example in Figure 24 on
page 53 is invalid because it consists of transceiver slots on AT-
XEM2-12XS Line Cards and base 10Gbps slots.
Additionally, a stack trunk cannot consist of links that interconnect
transceivers in an AT-XEM2-12XS Line Card and base slots. The
stack trunk in Figure 33 is invalid because 10Gbps trunk slots on
the AT-XEM2-12XS Line Card in the top switch are connected to
base 10Gbps slots on the bottom switch.
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