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Questions tagged [vlan]

Group of hosts with a common set of requirements connected as if on the same broadcast domain despite physical location

VLAN, short for virtual local area network or virtual LAN, is where a group of hosts sharing the same set of requirements are connected to each other as if they were on the same broadcast domain regardless of their actual physical location.

See also

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tc u32 --- how to match L2 protocols in recent kernels?

I have a nice shaper, with hashed filtering, built at a linux bridge. In short, br0 connects external and internal physical interfaces, VLAN tagged packets are bridged "transparently" (I mean, no VLAN interfaces are there). Now, different kernels do…
brownian
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Does setting MTU on logical interfaces affect physical interfaces

I've been using a combination of interface bond-, vlan- and bridge-interfaces to provide redundancy and different logical network layers to xen domU's. This setup is working well however i'm a bit uncertain as to how different settings on these…
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What do switches do to tagged and untagged VLAN packets?

Let's say we have a 4-port switch that is VLAN capable. 1 2 3 4 Port 1 is TAGGED to VLAN10` and `UNTAGGED to Default_VLAN(1) Port 2 is UNTAGGED to VLAN10 Port 3 is UNTAGGED to VLAN10 For the sake of this question, we have a…
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Can switches do VLAN routing?

I have been learning about VLANs and I am wondering if switch can be used for communication between two VLANs. Since switches support trunk links and already know the destination/source (VID) of the frame could they be used to send the frame from…
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How can I setup vSphere so that VLAN tags are not stripped at the vSwitch?

I am trying to test a VLAN-related networking issue, so I thought that firing up a couple virtual machines would be the easiest and cleanest method to test the problem. On the vSphere server I created a new vSwitch with no adapters bound, then…
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VLAN for WiFi traffic separation (new to VLANing)

I run a school network with switches in different departments. All is routed through to a central switch to access the servers. I would like to install WiFi access points in the different departments and have this routed through the firewall (an…
Philip
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Are VLANs necessary for my environment?

I'm the new network manager for a school. I've inherited an environment made up of several Windows servers, about 100 Windows clients, 10 printers, 1 Cisco router, 6 Cisco switches, and 1 HP switch. Also, we're using VoIP. There are four floors in…
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Are VLan's used to split my switch into segments?

I'm trying to plan for the following Small Office network setup: 3x Internet connections Things connected to the port in each colour can only get routed through their corresponding internet port. for example: Internet 1 (RED) - ports 4, 6, 8, 10…
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Is it possible to connect a single NIC to two different VLANs?

I know it is possible to assign multiple IP addresses to the same NIC as long as they are on the same sub-net (e.g. server A can be assigned both 192.168.1.1 and 192.168.1.2). However, is it possible to assign multiple IP addresses that are a…
sagi
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OpenWrt Configuring Tagged and Untagged VLAN on the Same Port

I have installed OpenWrt on a MikroTik Routerboard RB750UP (AR7240 CPU with AR9330 built in switch). I have included additional details below, but my question is: How do I configure an untagged and tagged vlan on the same port? I have successfully…
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How to add vlan without vconfig command?

Is there any way how to create vlan interface without using vconfig ? I have only KVM console and trunk port connected to the machine, so I cannot use apt as I do not have internet access. I defined vlans in /etc/network/interfaces but it does not…
John
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Can't communicate between lan ports on openwrt router

I've got a WBMR-HP-G300H Buffalo Airstation router on which I've installed the lates OpenWRT software. All is working well (ADSL, WIFI etc) except for one niggle. I can't communicate between lan ports. i.e. if I have one computer connected on lan…
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Cisco and Linux and Vlans

I appear to have some fundamental misunderstanding of how VLANs work on Linux, and I'm hoping the good people here can educate me. Cast: One Cisco 3560, one VLAN, and one Linux box [1]. Cisco --------------- Linux ge0/1 eth0 The…
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Windows computers getting SLAAC IPv6 from tagged VLAN

I have windows computers on a network that are un-unexpectedly getting an IPv6 address from tagged VLAN. I have routers/computers connected to a switch with an untagged vlan (id 1), and a tagged (id 2). For simplicity, lets say this VLAN2 is for…
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How does VLAN subnetting work on IPv6?

I have a network with about dozen VLANs, most with inter-VLAN routing, some without. They might talk to each other but not to the other's gateway. It's not divided because of security or congestion, it's more like there are VLANs are for the…
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