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Using the BayStack 410-24T 10BASE-T Switch
1-38
309985-A Rev 00
Because there is only one link between the two switches, the Spanning Tree
Protocol (STP) treats this configuration as any other switch-to-switch connection.
For this configuration to work properly, both switches must support the 802.1Q
tagging protocol.
VLANs Spanning Multiple Untagged Switches
Figure 1-21
shows VLANs spanning multiple untagged switches. In this
configuration switch S2 does not support 802.1Q tagging and a single switch port
on each switch must be used for each VLAN.
For this configuration to work properly, spanning tree participation must be set to
Disabled because the STP is not supported across multiple LANs.
Figure 1-21. VLANs Spanning Multiple Untagged Switches
When the STP is enabled on these switches, only one link between each pair of
switches will be forwarding traffic. Because each port belongs to only one VLAN
at a time, connectivity on the other VLAN will be lost. Exercise care when
configuring the switches to ensure that the VLAN configuration does not conflict
with spanning tree configuration.
VLAN 1
S1
S2
VLAN 2
BayStack 410-24T
Untagged portsUntagged ports
Non-802.1Q
tagging switch
BS41021A