Questions tagged [vlan]

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

Filter by
Sorted by
Tagged with
2 votes
2 answers
2k views

Tagged VLAN on KVM with macvtap driver

I've setup a pfsense guest on KVM and and trying to pass tagged and untagged traffics to the VM for obvious reasons. My setup looks like this --> The KVM has 2 NICs(both virtio type): 1st(for ...
amlanhldr's user avatar
0 votes
1 answer
477 views

Connect 2+ LANs into a Single LAN and Access LAN Remotely

I have two Ubiquiti Dream Machines (just upgraded from Netgear and I am blown away by the difference in quality.) I have one of the Dream Machine routers at home and one at my office, each with its ...
Kirk Ouimet's user avatar
1 vote
1 answer
699 views

Set up KVM host with multiple VLANs, each attached to "its own" external IP address

I'm trying (and having a hard time) to setup a clean KVM environment with: an Ubuntu (20.04) host (with a single NIC), multiple ubuntu KVM guests, 2 public IPs, and one Vlan per IP. Basically ...
Milan Rodriguez's user avatar
0 votes
0 answers
64 views

Is it possible to create a new network on a LAN with another router?

I have a main router (Zyxel XMG3927-B50A) in my house that is a gateway on 192.168.1.1 connected to the WAN and I have another router (DrayTek Vigor2830n) that is connected to the main router. Is it ...
Matthew Tranmer's user avatar
0 votes
0 answers
1k views

Unable to Ping IP Addresses on VIF interfaces on VyOS

I'm having issues with 2 VyOS routers, not being able to ping IP address on VIF interfaces. Below is the configuration on the router, which is also running BGP (which I've confirmed is working as ...
Christopher H's user avatar
1 vote
1 answer
54 views

Fiber to copper switching - small network requiring robust solution

I have a simple setup which appears to require a clever solution; hoping someone has some ideas. Network: 4 data generating computers, each with a copper->fiber media converter 2 data analyzing ...
user1911392's user avatar
0 votes
1 answer
191 views

Traffic not traversing VLAN over multiple hops?

I am configuring a new Cisco edge switch stack, and temporarily I am trunking this stack through another edge switch back to my core switch (no spare fiber pairs to use to trunk directly). This is ...
NaOH's user avatar
  • 411
1 vote
1 answer
2k views

Multicast not working on macvtap device

I have a problem with my virtual network and IPv6 network discovery (multicast traffic). (The setup might seem a little bit involved and I don't remember the exact reasons for every design decision. ...
bug.spencor's user avatar
0 votes
1 answer
1k views

Obtaining IP Address when Using NPS/RADIUS with existing lease from Windows DHCP

Problem: I have DHCP clients on a Windows AD network contoso.local, that often can't get an IP address after successfully authenticating over the RADIUS/NPS Server. I found that if the device has an ...
Kevin's user avatar
  • 1
1 vote
0 answers
310 views

Multiple private networks across multiple hosts (KVM, OpenVSwitch)

I had asked this question on SuperUser, looks like it wasn't the correct forum. Hopefully ServerFault is the correct one. I am working on a project, running KVM virtualization on 4 different host with ...
ASM's user avatar
  • 11
1 vote
1 answer
2k views

Adding a VLAN (over bond/lacp) interface to bridge makes physical interfaces to go down

I have a working configuration of a team interface bonding two physical interfaces, with several VLANs. ens1f1 ----- |--- team0.1826 (172.18.x.y/28) |--- team0 -----|--- team0....
Alex's user avatar
  • 46
0 votes
1 answer
913 views

Bridge interface with VLAN tagging

I need my Proxmox instance to accept traffic from another VLAN and I'm having trouble with setting the interface correctly. I have 1 NIC, I've configured a port on my switch as a trunk interface, now ...
dywan666's user avatar
  • 160
1 vote
2 answers
1k views

How to expose a VM to the local LAN but not the Internet?

I'd like to wire up a VM with LAN access but restrict it from accessing the Internet. I've come across a couple of comments—such as this one—indicating that this can be done via two NICs, but the ...
InteXX's user avatar
  • 765
2 votes
0 answers
2k views

How do I stop STP from blocking ports assigned to different VLANs

I have a spanning tree issue on my Cisco SG500 SMB Switches that I could use some help solving. Here is a diagram of my setup: SW1 (ports 44-47, VLAN 10) connect to port 43 (VLAN 10) on SW2, SW3, SW4,...
Od29's user avatar
  • 41
0 votes
0 answers
183 views

Mikrotik RouterOS - How to prevent all devices in a VLAN from initiating any connections outside of the VLAN? [duplicate]

I'm using a RouterOS device as a router on a stick. I'd like to isolate a certain VLAN from the outside world so that the VLAN cannot instantiate any connections to other VLANs or to the Internet (WAN)...
adamsfamily's user avatar
0 votes
0 answers
31 views

VLAN 'Bridging' for Core on Multiple Networks

I think I have a very unique use-case that I need help with since I am not a network engineer. Here's the layout. I help operate a gaming floor network for a Casino. The thing that I noticed right ...
Duane Gatewood's user avatar
1 vote
1 answer
335 views

Computer getting Unable to Identify Network UNLESS Vlan is changed

Question moved from Network Engineering to Server Fault. This is a problem that has long plagued this environment. At seemingly random times (measured generally in months), a computer may suddenly ...
zzz's user avatar
  • 11
2 votes
2 answers
34 views

Could servers with different net-ids be in the same VLAN [closed]

Could I theoretically have one server with an ip address of : 10.10.10.1 and another server with the ip : 10.10.11.2. sign them the same vlan id on the switch, and have communication between them (say ...
tigon's user avatar
  • 21
1 vote
0 answers
98 views

Hyper-V virtual switch experiment

I recently learned that windows generally, server 2016 in my case can make use of the hyper-v virtual switch on the host machine as a way to tap into different vlan's. I have a repurposed gigabyte ...
Theo Lehr's user avatar
2 votes
0 answers
193 views

Secure Diskless System - NFS as root

I've created a diskless Debian installation with root filesystem over NFS, and boot loader on a USB (this computer has issues booting from PXE for some reason). My setup is similar to the one ...
manutenfruits's user avatar
6 votes
2 answers
2k views

When to use routers and when to use layer 3 switches [closed]

If you were to connect two buildings on the same site via fiber, what is best to use - routers or layer 3 switches? The layer two switches in each building have VLAN's, so these will either connect to ...
The_Bear's user avatar
  • 163
1 vote
1 answer
160 views

VLAN AND PHP VIRTUALBOX

I have an ubuntu server with 2 network cards and I'm currently using only one network card. In that server I have php-virtualbox installed. The server is connected to a switch port tagged for ALL ...
FRANZ's user avatar
  • 11
1 vote
1 answer
2k views

VLAN aware bridging for KVM hypervisor on debian 10 (buster) and later

I am setting up a new KVM hypervisor and the VMs will need to connect to several VLANS (one VLAN per VM). However I can't find good documentation or instructions on how to configure the hypervisor or ...
Andreas Schuldei's user avatar
0 votes
0 answers
608 views

Assigning proper vlan id tag to a QEMU-KVM Centos 7 virtual machine

I have a Centos 7 QEMU-KVM virtual machine located at a Centos 7 physical server. Both are in a network that uses vlan ids. Also the Network Admin Guy told me to assign the VLanId 33 to the Virtual ...
Jose Cabrera Zuniga's user avatar
0 votes
1 answer
1k views

VLAN tagging for non VLAN compliant devices

Okay so I'm a little new to VLANS, so forgive me if this is a silly question. I have a firewall set up with a few VLANS: ID 1: This is the primary, and set to untagged. This will be used as a ...
Tfom's user avatar
  • 23
0 votes
1 answer
897 views

IPv6 network fails on Linux router

IPv6 fails on ARMBIAN router I have a armbian box (RK3328 board + 1GB DDR3 + 8GB eMMC). The box has only one NIC, and acts as a linux one-armed router. IPv4 network works normally, but IPv6 fails. I ...
Jet's user avatar
  • 9
1 vote
1 answer
3k views

about ubuntu and vlan /etc/network/interfaces

I have an ubuntu server and I want to set a static ip for it. The ip will be 192.168.1.7, the subnet mask 255.255.255.0 the gateway 192.168.1.1 and the VLAN 50. What lines should be in /etc/network/...
Malkavian's user avatar
  • 183
1 vote
1 answer
1k views

Does a trunk port not half the bandwidth the way connecting an access port would?

If you connect a trunk port instead of an access port from your managed switch; does the bandwidth not get cut in half when the vlan is accessed on the managed switch's access port for that vlan?
leeand00's user avatar
  • 4,919
1 vote
1 answer
887 views

pfSense on ESXi VLAN and interface definition dilemma

I'm trying to set up a virtualised pfSense router in ESXi on a Dell server. After many hours of reading, experimenting, watching Youtube videos etc, I'm close to pulling my hairs out... The setup: - ...
wlamers's user avatar
  • 23
0 votes
0 answers
388 views

win Server not responding to DHCP Discover on vlans

Im pretty new to the topic, Im an electronics engineer so im naturally missing something in my IT config :-) im trying to set up a network for a non-profit organisation (small sports club) with the ...
j0nnyda's user avatar
0 votes
1 answer
1k views

Are devices on the same VLAN considered on the same network segment? [closed]

Say you have two network segments connected by a router. In my previous question we found that the two network segments are not on the same network segment when connected by a router. Now say you put ...
August H's user avatar
0 votes
1 answer
14k views

Vlan manager does not automatically disable macs

I want to implement a client infrastructure where the devices connect to the network in different vlan. I installed a freeradius server connected to our Active Directory. I have enabled the switches ...
yoga84's user avatar
  • 1
0 votes
0 answers
1k views

bridge isn't forwarding non local traffic

I'm experiencing the following issue, i have two virtual machines connected and vlan tagged traffic is passed lets say from A to B. The traffic passed from A to B is tagged and I need to strip the ...
Natalia's user avatar
0 votes
1 answer
3k views

How to configure VLANs along with Libvirt/KVM/QEMU and OVS?

I am using Debian 9 machine as a router with two interfaces: eth0 for WAN eth1 for LAN The eth1 has subinterfaces for multiple VLANs (eth1.10; eth1.20; eth1.30) and has trunk connection to managed ...
benetsi's user avatar
  • 11
4 votes
0 answers
784 views

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 ...
DHW's user avatar
  • 53
0 votes
1 answer
654 views

GuestVMs in a different VLAN than host in a HyperV Failover cluster

I'm smashing my head against a wall. I can't seem to get my guest VMs to use a different VLAN than my host machine. I have a 2 node Hyper V cluster(2016). Each node has 2 10Gig NICs in a Team. This ...
Brent Day's user avatar
1 vote
1 answer
2k views

OVS Bridge — How to Toggle a Port Between VLANs?

I am an Old School network guy trying to do some development work on an OVS Bridge. I need help figuring out the syntax to toggle the OVS bridge interfaces between VLANs. First, some system ...
Pete's user avatar
  • 133
0 votes
1 answer
393 views

Ubuntu Routing: Dual Nics with 2 Vlans

I am new to linux routing. I have an architecture similar to this . I realize this network architecture is fundamentally flawed however I am not permitted to change the architecture. I did some ...
Eric Humenay's user avatar
1 vote
0 answers
112 views

How can I put a WiFi client and an Ethernet client to the same group?

I have wireless interface wl0 and ethernet interfaces eth0, eth1, eth2, eth3 all in the same bridge br0. Now I have to put one of the wifi clients and one ethernet client to the same group so that ...
A R's user avatar
  • 111
1 vote
1 answer
2k views

CentOS 7, KVM, bridge, VLAN, bond and no guest traffic

I'm running into an issue where my KVM guests have no network traffic in- or outgoing. After a lot of hours debugging I'm pretty sure I'm missing something essential. What I have a server with 2 10 ...
Johan's user avatar
  • 13
0 votes
1 answer
1k views

Bridge over VLAN interfaces causes broadcast storm

I am doing experiments on my Proxmox server. The purpose of the expriment is to establish reliable and fault-torrant communications between two PCs that control industrial equipment. but I am puzzled ...
Jet's user avatar
  • 9
1 vote
1 answer
901 views

LACP and VLAN routing correct network setup

I am trying to understand the correct way to do LCAP with a VLAN and have all the routing be correct. Hardware OS:FreeNAS-11.2-U7 Server:(2) Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz 128GB ...
laxer's user avatar
  • 121
0 votes
1 answer
564 views

LCAP and VLan on FreeNAS box

I can not seem to get the FreeNAS GUI to come up when I try to use link aggregation. I have been googling for days and I am totally lost as to where I am going wrong. I will list the equipment I have ...
laxer's user avatar
  • 121
0 votes
0 answers
2k views

Ubuntu 18.04: Can't SSH into server's VLAN interface from my Cisco router

I recently configured VLAN interfaces on my relatively new Ubuntu 18.04 server which has two physical interfaces: eno1 and eno2. I have configured them using the netplan utility. My goal is simple: ...
David00's user avatar
0 votes
1 answer
1k views

How to move multiple, random ports to a vlan on a cisco switch

I'm very new to Cisco networking. We had a Cisco engineer set up vlans on our network switches and then gave us instructions for moving our existing ports to the voice vlan he created. I've moved ...
43rdworld's user avatar
1 vote
0 answers
955 views

Attach KVM VM to vlan-filter capable bridge

I am trying to use new vlan-filter capable bridge on Virtualization Host running OEL 8.1. It does not support OpenVSwitch out of the box and I think vlan-aware bridge might work. Now I have (...
kab00m's user avatar
  • 518
1 vote
0 answers
2k views

VLAN Config on Mikrotik RB4011

I'm trying to configure the router to have two subnets 192.168.1.0/24 and 192.168.2.0/24. The first subnet is the default and all ports should use this as the default IP range, the second subnet ...
jfreak53's user avatar
0 votes
0 answers
97 views

DNS A Records Disappear On Multi-NIC Server

I have a 2 Servers running as a top Level DCs on a Parent Domain. They are running DNS for the following addresses. 192.168.1.X (DHCP) 192.168.10.X (Static) I have 2 servers running as child level ...
JukEboX's user avatar
  • 835
3 votes
1 answer
1k views

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 ...
MPH's user avatar
  • 171
2 votes
1 answer
159 views

Dell PowerConnect 2724 VLAN frame type filtering issue?

The endless VLAN headaches (and questions), eh? I really have no idea how to title this one, do not judge. I'm currently configuring VLANs on a Dell PowerConnect 2724 switch. Currently, all ports ...
Teknikal_Domain's user avatar

1 2 3
4
5
26