![](/images/new-backgrounds/1213250/213250121x1.webp)
Figure 79 5120 SI IRF fabric in daisy chain topology
Figure 80 5120 SI IRF fabric in ring topology
Identifying physical IRF ports on the member switches
Identify the physical IRF ports on the member switches according to your topology and connection scheme.
Table 12 shows the physical ports that can be used for IRF connection and the port use restrictions.
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