HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 37
VLAN Operation, Example of a Switch in the Default VLAN Configuration
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Static Virtual LANs (VLANs) Static VLAN Operation VLAN Operation The Default VLAN. In figure 2-1, all ports belong to the default VLAN, and devices connected to these ports are in the same broadcast domain. Except for an IP address and subnet, no configuration steps are needed. A8 A1 A7 A2 VLAN 1 A6 A3 A5 A4 Figure 2-1. Example of a Switch in the Default VLAN Configuration Multiple Port-Based VLANs. In figure 2-2, routing within the switch is disabled (the default). This means that communication between any routable VLANs on the switch must go through the external router. In this case, VLANs "W" and "X" can exchange traffic through the external router, but traffic in VLANs "Y" and "Z" is restricted to the respective VLANs. Note that VLAN 1, the default VLAN, is also present, but not shown. (The default VLAN cannot be deleted from the switch. However, ports assigned to other VLANs can be removed from the default VLAN, if desired.) If internal (IP) routing is enabled on the switch, then the external router is not needed for traffic to move between port-based VLANs. Switch with Multiple VLANs Configured and Internal Routing Disabled External Router VLAN X A8 VLAN W A1 A7 A2 A6 VLAN Y A3 A5 VLAN Z A4 Figure 2-2. Example of Multiple VLANs on the Switch 2-9