What type of traffic goes through native VLAN?
untagged traffic
In short, the native VLAN is a way of carrying untagged traffic across one or more switches. Consider this Example. The ports that the hosts connect to are trunk ports, with native VLAN 15 configured. Carrying untagged traffic has its uses.
Is VLAN 1 the default VLAN?
The default VLAN for Cisco switches is VLAN 1. VLAN 1 has all the features of any VLAN, except that you cannot rename it and you cannot delete it. Layer 2 control traffic, such as CDP and spanning tree protocol traffic, will always be associated with VLAN 1 – this cannot be changed.
Should I use default VLAN 1?
By default, this is also VLAN 1. A good security practice is to separate management and user data traffic. Therefore, it is recommended that when you configure VLANs, you use VLAN 1 for management purposes only.
Why should I not use VLAN 1?
As a consequence, VLAN 1 may unwisely span the entire network if not appropriately pruned. If its scope is large enough, the risk of compromise can increase significantly.
Can you change default VLAN to native VLAN?
You can’t change or even delete the default VLAN, it is mandatory. The native VLAN is the only VLAN which is not tagged in a trunk, in other words, native VLAN frames are transmitted unchanged. Per default the native VLAN is VLAN 1 but you can change that: The default VLAN is still VLAN 1.
Which is the default VLAN for untagged traffic?
As VLAN 1 is the default native VLAN, it is used for untagged traffic. If you need to pass frames tagged VLAN 1, you will not be able to, by default. The solution is to change the default VLAN to another value. Once this is done, VLAN 1 can be passed across the trunk just the same as any other VLAN.
Which is the default VLAN for a switch port?
All switch ports, are configured by default to be members of VLAN 1. All trunks carry VLAN 1 by default. The native VLAN is the VLAN to which a port returns when it is not trunking. Also, the native VLAN is the untagged VLAN on an IEEE 802.1Q trunk. CDP, VTP, and PAgP updates are always forwarded on trunks with a VLAN 1 tag.
How is a tagged VLAN different from a native VLAN?
If a frame on the native VLAN leaves a trunk (tagged) port, the switch strips the VLAN tag out. In short, the native VLAN is a way of carrying untagged traffic across one or more switches. Consider this Example. The ports that the hosts connect to are trunk ports, with native VLAN 15 configured.