Netgear XCM8810 Chassis User Manual - Page 256

NETGEAR 8800 User Manual VLAN that are located on a different physical switch. An isolated VLAN can span multiple switches and maintain isolation between the VLAN ports. The network and subscriber VLANs can be extended to other switches that are not configured for the PVLAN (as described in Extending Network and Subscriber VLANs to Other Switches on page 256). The advantage to extending the PVLAN is that tag translation and VLAN isolation is supported on the additional switch or switches. Extending Network and Subscriber VLANs to Other Switches A network or subscriber VLAN can be extended to additional switches without a PVLAN configuration on the additional switches. You might want to do this to connect to existing servers, switches, or other network devices. You probably do not want to use this approach to support clients, as tag translation and VLAN isolation are not supported unless the PVLAN is configured on all PVLAN switches as described in PVLAN Support over Multiple Switches on page 255. Figure 15 illustrates PVLAN connections to switches outside the PVLAN. Switch 3 PVLAN endpoint 21 21 2222 23 2324 24 Network LVAN Tagged1 Switch 1 Private VALN 21 22 23 24 NetworkVLAN Tagged1 Non-IsolateVdLAN Tagged101 IsolatVeLAdN Tagged101 Network LVAN Tagged1 Switch 2 22 Non-IsoaltedVLAN Tagged101 IoslatedVLAN Tagged101 EX_vlan_0004 Figure 15. Private VLAN Connections to Switches Outside the PVLAN In Figure 15, Switch 1, Network VLAN Port 21, connects to a Switch 3 port that only supports the Network VLAN. In this configuration, the Network VLAN Port 21 on Switch 1 is configured as "translated," which translates subscriber VLAN tags to the network VLAN tag for access to 256 | Chapter 9. VLANs