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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

1259 questions
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VPN instead of VLANs

My network have about 8 thousand user, who work in multiple buildings. There is frequent employee turnover, which currently forces changes in the configuration of vlans on the switch ports. In addition, we have many device manufacturers in the…
Qmails
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Layer 2 Broadcast filtering on VLAN? (Access ports on Cisco SG-500-52MP)

This is my first time setting up VLANs on a Cisco so I've probably made some mistakes - would appreciate some suggestions. Thank you in advance. ... From my understanding of switches, when a layer 2 broadcast packet is received, the switch should…
DHW
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VLAN not working on PFSense (SG 1100) with HP switch (HP E3500-48G-PoE yl)

Recently I bought a PFSense server (SG 1100) and a HP switch (HP E3500-48G-PoE yl). My idea is to create VLANs on the PFSense server, and use them on the connected HP switch. I have found a tutorial which helped me set up…
MPH
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Transparent LAN service on Linux

I need to implement a VLAN based transparent LAN service on Linux. Meaning I need to take configured VLAN and forward it directly to the specified port (all broadcast/multicast and unicast packets). The trivial solution will be defining 1 to 1…
Ilya
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hostapd: mapping MAC address to VLAN ID (static mapping via accept_mac_file)

I want hostapd to assign each station a given VLAN based on MAC address. BTW, my network is quite small. Using RADIUS would be an overkill. According to the hostapd manual: Optionally, the local MAC ACL list (accept_mac_file) can be used to set…
Pedro Abrantes
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How to tag the outgoing packets with the correct VLAN ID?

I have a virtual machine CentoS running on VMware workstation 12 player on my PC (windows 7) and i am trying to configure the VM to be able to reach my client network. Please see the attached photo to have an idea about what i am trying to do. My…
Networking
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listing parent interface of a vlan

I have a setup with a bunch of vlan interfaces on a physical interface. Physical interface: eth1 VLANS on top of this: vlan1, vlan2, vlan3 Now, I want to know which is the parent interface of my vlan (for example, here eth1 is the parent interface…
Rahul
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VLANs and packet tagging

Not a system admin (electrical eng so I develop ASIC's) and I've come across an issue where I need to understand switching better. I have one device (A) that has pre tagged traffic coming out of it and I have two devices (B & C) that will be sending…
mHo2
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Can a switch that doesnt know anything about 802.1ae macsec route macsec frames?

If one device (e.g. A wireless router) is attempting to communicate with another device (e.g. some gateway to another network) through a unmanaged switch and the router is ciphering frames it transmits using 802.1ae macsec (which the gateway also…
Bob
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ARP/ICMP issue in VLAN over bonded interface

I've been trying to troubleshoot this for whole day without any success. I have two servers, server1 and server2, both running Ubuntu 14.04.5 LTS and connected to a Cisco sg200-08 switch via LAG trunk with LACP. The switch ip is 172.128.1.254/24 and…
IgorC
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Linux: bridges, VLANs and RSTP

I tried to figure out how to setup RSTP on Linux with VLANs and bridges involved and now am completely confused. I am trying to bridge three interfaces, two of which are supposed to act as trunk (hdlc0 and hdlc1) and one is supposed to act as access…
grindelwaldus
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Scan to folder across subnets/VLAN's no longer works

We have a Sharp copier scanner set up on address 172.20.20.200 and a Windows 2008 file server with network shares IP - 172.20.10.82. Up until a week ago we could scan from the copier directly to a folder on the Windows server, no trouble. It has…
Roberto
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VM with two NIC on Hyper-V - how to do that?

I'm new to Hyper-V. How do you configure two IP address on the same VM server? Both IP are on different subnets - one in 192.168.x.x and the other 10.x.x.x. There is an uplink (802.1q) between the Hyper-V physical server and the Cisco…
Ticoune
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How to set VLAN PCP value?

I am using Intel 82599ES 10-Gigabit adapter on a Linux Machine.I have configured Vlan and the priorities on switch. I have read this http://open-lldp.org/dcb_overview. "When DCB is in operation on a network interface, the skb_priority is mapped to…
Ayush Gupta
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How to setup embedded Linux private vlan

I am trying to setup a vlan between 2 embedded Linux SOCs on wireless IPTV STB (set top box) using vconfig. The physical connection between the SOCs is a Marvell 88E60xx switch. The issue is that the vlan needs to be private. If there is more than 1…
jacknad
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