68 Summit 300-48 Switch Software User Guide
Virtual LANs (VLANs)
Figure 3 illustrates two VLANs spanning two switches. On system 1, ports 1:12 through 1:24, and port
1:51 are part of VLAN Accounting; ports 1:37 through 1:48, and port 1:52 are part of VLAN Engineering.
On system 2, all ports on slot 1 are part of VLAN Accounting; all ports on slot 8 are part of VLAN
Engineering.
Figure 3: Two port-based VLANs spanning two switches
VLAN Accounting spans system 1 and system 2 by way of a connection between system 1, port 1:51 and
system 2, slot 1, port 6. VLAN Engineering spans system 1 and system 2 by way of a connection between
system 1, port 1:52, and system 2, slot 8, port 6.
Using this configuration, you can create multiple VLANs that span multiple switches, in a
daisy-chained fashion. Each switch must have a dedicated port for each VLAN. Each dedicated port
must be connected to a port that is a member of its VLAN on the next switch.
Tagged VLANs
Tagging is a process that inserts a marker (called a tag) into the Ethernet frame. The tag contains the
identification number of a specific VLAN, called the VLANid. The Summit 300-48 switch supports L2
tagged VLANs.
LB48007
1234AB5678
System 2
System 1
6
5
4
3
2
1
2
1
6
5
4
3
Accounting
Engineering
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