Access Switch VLAN Pass-through

PINO OPTICS delivers premium fiber optic cables, adapters, distribution boxes, PLC splitters, QSFP transceivers, industrial switches and power systems for FTTH, PON, campus and carrier networks.

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Aug 22, 2025

Configuring Access and Trunk Interfaces

Configuring Access and Trunk Interfaces Ethernet interfaces can be configured either as access ports or trunk ports. Trunks carry the traffic of multiple

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Dec 24, 2025

Assign an Interface VLAN as an Access or Trunk Port

This article aims to show you how to configure an interface VLAN on your switch to be an access, or trunk port

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Oct 08, 2025

Can a switch pass VLAN traffic without knowing about the said VLANs

The switch has to know about the tagged VLANs in order to pass traffic to their intended destinations, and keep those devices from seeing anything else. Otherwise, why have them in the

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Jun 21, 2026

Is VLAN config needed on a pass-through switch?

Yes, on Cisco switches the L2 VLAN needs to be defined on all intermediate transit switches or the tagged frames will get dropped.

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Jun 30, 2025

VLAN to VLAN Access in Trunk Mode

I describe the VLAN to VLAN access in trunk mode. The aim of the topic is to make communication between same VLANs with different switches

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Dec 28, 2025

Configure Access and Trunk mode port of switch port

All switch ports remains in single VLAN 1 and in access mode default. Once you change the switch port to trunk mode the default property of

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May 09, 2026

VLAN traffic not passing through managed switch

You need to assign vlans to ports as either untagged (only one vlan

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Jun 21, 2026

How to provide Internet access to multiple VLANs?

I have a TP-LINK T1600G-28TS, with two VLANs, 10.0.0.0/24 ID 101 and 10.1.1.0/24 ID 102. The IP addresses are assigned by the switch DHCP

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Aug 07, 2025

Configuring VLANs on Cisco Switches

Master configuring VLANs on Cisco switches. Learn to configure Access and Trunk ports, and Native VLANs and Allowed VLAN Lists. Learn to verify with show

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May 05, 2026

Assign an Interface VLAN as an Access or Trunk Port on a Switch

Access port — A port that carries traffic only to and from the specific VLAN assigned to it. Trunk port — A port that is capable of carrying traffic for any or all the VLANs that are accessible by a specific

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Jun 13, 2026

What is VLAN Passthrough?

When a device is configured for VLAN passthrough, it forwards the packets as they are ensuring the VLAN tags remain intact as the data travels across the network. This feature enables devices on the

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Oct 10, 2025

How to configure routing VLANs with shared Internet access on a

Your settings are saved. Configure access control lists on the fully managed switch (optional): As an option, add access control lists (ACLs) to prevent unwanted inter-VLAN

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Jul 28, 2025

ACCESS PORT | Different VLANs

The drawing shows a left switch with 2 devices, one in vlan 100 and one in vlan 200, and an access port connecting left switch to right switch

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Jan 23, 2026

unmanaged switches passing through vlan traffic : r/networking

Hi guys, I''m trying to gain an understanding of how a non-managed switch can sometimes pass through VLAN traffic. I''ve experienced situations where it has, and others where it hasn''t.

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Oct 25, 2025

Assign an Interface VLAN as an Access or Trunk Port on a Switch

This ensures that packets for both data types are isolated from each other, maximizing the utilization of the switch. You can assign an interface VLAN into a specific mode such as an

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Aug 27, 2025

Understanding and Using VLANs Introduction What is a VLAN?

Why Set up VLANs? Increased Security – Unknown users can connect to a guest network but can''t get access to other parts of the network unless you want them to. Minimize Network Equipment –

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Aug 12, 2025

Is VLAN config needed on a pass-through switch?

Hi! If there are three daisy-chained switches: A–B–C and only A and C have some access ports assigned to a specific VLAN, say VLAN50, does switch B have to have VLAN50

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May 20, 2026

How to set up VLAN to pass traffic through a managed switch?

Set up both VLANs as tagged on the LAG interface. If the access points are set up for tagging, set up the appropriate VLAN as tagged on the corresponding ports, otherwise as untagged,

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Jun 20, 2026

Is there a way to pass VLAN tagged frames through managed switch?

In the predominant solution design, i.e. if the latest switch lore doesn''t have some spankin'' new theory attached to it, for a packet to change vlan id it is required to pass through an L3 router.

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Feb 11, 2026

Description of Switchport Mode Access vs Trunk Modes

In this article, we will discuss a couple of core concepts of network switching which are about Access and Trunk ports and how to configure them using “switchport

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Jun 27, 2025

Configuring VLAN

Access: This interface belongs to a single VLAN and is used to connect to a terminal device. When this interface receives an untagged VLAN packet, it adds the Default VLAN tag to it. When the interface

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Mar 29, 2026

Consolidated Platform Configuration Guide, Cisco IOS

When a switch has an IP access list or MAC access list applied to a Layer 2 interface, and you apply a VLAN map to a VLAN that the port belongs to,

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Jun 23, 2026

Fundamentals Trunk and Access port

VLAN enabled ports are generally categorized in one of two ways, tagged (Trunk ) or untagged (Access). The trunk is mostly used to link switches to

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Aug 11, 2025

Configuring Access and Trunk Interfaces

You must create the VLAN before you can assign it as an access VLAN for an access port. If you change the access VLAN on an access port to a

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Apr 21, 2026

networking

For example, it''s not a problem to connect three VLAN-capable Wi-Fi access points through an unmanaged switch, even if tagged VLANs are involved

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