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VLAN Support
The virtual LAN (VLAN) concept creates a virtual switch within a physical switch or stack of switches. A VLAN consists of CRFs and has its own bridge relay function attached. Frames are not forwarded across VLANs and ring numbers must be unique within a VLAN.
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A VLAN consists of a number of ports of a switch or stack of switches
No frames are forwarded between ports belonging to different VLANs
Port groups on different VLANs may be assigned the same ring number, but ring numbers must be unique within the same VLAN
For each VLAN, the stack can be assigned a separate IP address
The spanning tree protocol is executed independently within each VLAN. However, since all BRFs use the same Bridge ID for the spanning tree algorithm, the spanning tree protocol will not function if ports from different BRFs within one switch are connected.
A sample VLAN with SmartStack
VLAN 1 | VLAN 2 |
| BRF 1 |
| BRF 2 |
CRF 1 | CRF 2 | CRF 3 | CRF 4 |
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| Switch |
Figure 7. A SmartStack STS16-20R Switch Configured with Two VLANs
Switch Overview | SmartStack |
