Virtual Local Area Network (Vlan) - Phoenix Contact FL SWITCH SMN 6TX/2POF-PN User Manual

8

Virtual Local Area Network (VLAN)

VLAN
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8.1 Basics
A VLAN is a closed network, which is separated logically/functionally rather than physically
from the other networks. A VLAN creates its own broadcast and multicast domain, which is
defined by the user according to specified logical criteria. VLANs are used to separate the
physical and the logical network structure.
– Data packets are only forwarded within the relevant VLAN.
– The members of a VLAN can be distributed over a large area.
The reduced propagation of broadcasts and multicasts increases the available bandwidth
within a network segment. In addition, the strict separation of the data traffic increases sys-
tem security.
A router or similar Layer 3 device is required for data traffic between VLANs.
For the switch, the VLANs can be created statically.
8.2 Enabling the VLAN web pages in web-based man-
agement
Start web-based management for the switches, e.g., using Factory Manager, switch to the
"General Configuration" menu, then the "User Interfaces" page. Activate the "VLAN" func-
tion and confirm by entering your password.
When activating "VLAN" under "User Interfaces", the VLAN mechanism is not activated.
In the WBM menu, the "VLAN" page - under which the function can be configured and ac-
tivated - is enabled.
When deactivating the VLAN configuration pages under "User Interfaces", the VLAN
mechanism is not deactivated. The saved VLAN configuration is retained.
8.2.1 Management VLAN ID
The management of the switch is assigned to VLAN 1 by default upon delivery. In addition,
all ports are assigned to VLAN 1 by default upon delivery. This ensures that the network-
supported management functions can be accessed via all ports.
Make sure that the switch is always managed in a VLAN that you can also access.
VLAN ID 1 cannot be deleted and is thus always created on the switch.
If you delete the VLAN in which the switch is managed, management is automatically
switched to VLAN 1.
Virtual Local Area Network (VLAN)
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