IE-SW-VL08M Series User’s Manual Featured Functions
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port cost of 36 (18+18). This means that both VLANs are now subdivided—VLAN 1 on Switch
units A and B cannot communicate with VLAN 1 on Switch C, and VLAN 2 on Switch units A and
C cannot communicate with VLAN 2 on Switch B.
To avoid subdividing VLANs, all inter-switch connections should be made members of all available
802.1Q VLANs. This will ensure connectivity at all times. For example, the connections between
Switches A and B, and between Switches A and C should be 802.1Q tagged and carrying VLANs 1
and 2 to ensure connectivity.
Configuring STP/RSTP
The following figures indicate the Spanning Tree Protocol parameters that can be configured. A
more detailed explanation of each parameter is given below the figure. (NOTE: The user interface
for IE-SW-VL08M shows 8 ports.)
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