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Summit Family Switches Hardware Installation Guide
107
Using the VIM1-SummitStack512 Module
The VIM1-SummitStack512 versatile interface module allows you to connect two Summit X650 series
switches in a cross-over or back-to-back configuration, using SummitStack 128G cables (Figure 76). This
configuration provides two bidirectional links operating at 256 Gbps between the two switches.
Figure 76: Stacking Connections Using VIM1-SummitStack512 Modules
and SummitStack 128G Cables
Unlike other stacking configurations, with the VIM1-SummitStack512 modules, ports are connected in
pairs of matching port numbers. When you connect stacking cables to installed VIM1-SummitStack512
modules, match the stacking ports as listed in Table 25.
Table 25: Required Order for Stacking Connections Using the VIM1-SummitStack512 Module
Connect this slot and port . . . . . . To this slot and port
Slot 1 Stack Port 1 Slot 2 Stack Port 1
Slot 1 Stack Port 2 Slot 2 Stack Port 2
Slot 1 Stack Port 3 Slot 2 Stack Port 3
Slot 1 Stack Port 4 Slot 2 Stack Port 4
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