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ï‚· Select IRF from the navigation tree of Switch B to enter the page of the Setup tab.
Figure 28 Configure stack ports on Switch B
ï‚· In the Port Settings area, select the check boxes before GigabitEthernet1/0/1,
GigabitEthernet1/0/2, and GigabitEthernet1/0/3.
ï‚· Click Enable.
Now, switch B becomes a member switch.
# On Switch C, configure local port GigabitEthernet 1/0/1 connecting with Switch B as a stack port.