Native Virtuak Local Area Network 102.pptx

Native VLAN

1. Native VLAN Prepared by : Omar A. Fernandez Week 8

2. What is Native VLAN? A small clip of Native VLAN What is the purpose of Native VLAN?

3. is one concept defined in 802.1Q standard that was created for backward compatibility with old devices that don’t support VLANs. On a Ethernet network, all devices on the link must still be capable of communicating even if they do not speak the 802.1Q protocol.

4. Native VLAN is used by the switch to carry specific control and management protocol traffic like CDP (Cisco Discovery Protocol, VLAN Trunking Protocol (VTP), Spanning Tree Protocol (STP or some other network management traffic. This type of control traffic does not need any VLAN tag to cross over the trunk . The idea behind the native VLAN is that some network traffic still flows over the whole switched network even when trunk or Trunking fails.

5. The Native VLAN is also useful when we deal with voice over IP or VOIP. Example video

6. Thank You