Users Guide

VLANs 781
Default VLAN Behavior
One VLAN is configured on the Dell EMC Networking N-Series switches by
default. The VLAN ID is 1, and all ports are included in the VLAN as access
ports, which are untagged. This means when a device connects to any port on
the switch, the port forwards the packets without inserting a VLAN tag. If a
device sends a tagged frame to a port with a VLAN ID other than 1, the frame
is dropped. Since all ports are members of this VLAN, all ports are in the same
broadcast domain and receive all broadcast and multicast traffic received on
any port.
MAC address learning occurs on a per-VLAN basis. Dell EMC Networking
switches implement independent VLAN Learning (IVL) per IEEE 802.1Q.
Packets are forwarded to the port that is a member of the source VLAN where
the destination MAC address has been learned and is flooded to all ports in
the VLAN otherwise. A unicast MAC address may be associated only with a
single port within a VLAN.
When a new VLAN is created, all trunk ports are members of the VLAN by
default. The configurable VLAN range is 2–4093. VLANs 4094 and 4095 are
reserved for internal system use.
Ports in trunk and access mode have the default behavior shown in Table 18-2
and cannot be configured with different tagging or ingress filtering values.
When adding a VLAN to a port in general mode, the VLAN has the behavior
shown in Table 21-5.
Table 21-5. General Mode Default Settings
Feature Default Value
Frames accepted Untagged
Incoming untagged frames are classified into the VLAN
whose VLAN ID is the currently configured PVID.
Frames sent Untagged
Ingress Filtering On
PVID 1