Questions tagged [vlan]

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

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How can I configure a my switch to allow multiple VLANs on 1 port?

I am not sure if my title describes this well or not. Basically I have a Dell PowerConnect 2824 web managed switch. Currently the switch is running with ports 1 through 12 in VLAN 10. This is going ...
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2answers
870 views

Why do some VLAN Wireshark captures include data after the IPv4 payload?

Data Some Cloudshark captures show a "Trailer" for the vLAN and some do not. Captures With extra 4 bytes. Without extra 4 bytes. Question Why do some and not all VLAN Wireshark captures include ...
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1k views

PfSense box not passing traffic between WAN and LAN

I just tried to insert a PfSense box into my network and I seem to have broken something in the process. Need some outside help to point out any errors I might have missed. The setup was working ...
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1answer
57 views

Basic Vlan questions

I've been "awarded" with IT infrastructure manager possition as I'm the "good with computers" guy in my small office. Nedless to say they have made a huge mistake, I have no clue.... I'd like to ask ...
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1k views

pfsense inter vlan slow speed

In our company we use pfsesne 2.3 as a router. Problem is with inter-vlan transfer, which is very slow about 150kbit/s in both ways. Its very strange , network is 1GB , transfers inside vlan's are god ...
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1answer
583 views

Set Internet Access for VLAN + Default Gateway + DHCP Client

I have a question that make my mind so bussy. I would appreciate if anyone guide me about this. So let me explain: Firstly consider We have bellow devices: Devices: 2 L2 Managable Swiches 1 Router ...
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1answer
93 views

Intervlan routing--DHCP offer from server on default VLAN not making it back to newly created vlan via layer 3 switch

Default VLAN: 10.36.0.0/24 New VLAN : 10.36.8.0/24 DHCP server : 10.36.0.17 I can see the DHCP offer packets making it back to my VLAN ip address namely 10.36.8.31 (from dhcp server message log) ...
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1answer
86 views

SafeNet Sentinel RMS server needs to be pinged before it works (routed across VLANs)

I have 2 separate CAD programs that use the Safenet Sentinel RMS Server (Aladdin) to check the license. After boot, they cannot find the license server. The license server is configured using its ip ...
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348 views

How to create three private vlans using Netgear GS116Ev2

I'm trying to create two or more VLAN's on the Netgear GS116Ev2 switch where each VLAN shares a single port to access the Xfinity router for the internet but cannot communicate with other VLAN's. Btw ...
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1answer
2k views

ZyXel GS1920 Switch w/ VLAN

This may be a relatively easy question. However it's giving me a headache this morning. I have a ZyXel GS1920-48HP. Last week it lost its config. So I have to reconfigure. This switch had three vlans ...
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69 views

Configuration of VLAN for managing computers on the other side of a switch?

I have a modestly smart Cisco SG200 switch connected to our institute's Ethernet network. To this switch, I connected four Linux and Windows computers. (So, the configuration is: one network ...
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475 views

ASA 5510 Inter-Vlan routing issues

and thank you in advance for your help. I am having an issue where we are migrating from an ASA 5505 to an ASA 5510 and the software versions are quite different as well so they handle VLANs ...
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464 views

IP Subnetting vs VLAN for VoIP Traffic

I have a fairly small network with scanners, printers, phones and workstations/servers all sharing the same subnet (10.0.0.0). I am having issues with our VoIP phones and sluggish response on the ...
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1answer
222 views

Configuring azure site-to-site VPN with another network

I have an Azure VM (resource manager) already existing in a VLAN and i would like to know how can i setup a site to site connection. I have read https://azure.microsoft.com/en-gb/documentation/...
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1answer
107 views

I FUBAR'd the IP, subnet, and VLAN settings. Now how to access managed switch?

I have a Dell powerconnect 2748. I think I have done messed it up though when setting it up because so far I have not been able to access the webconfig of the switch after I changed some settings I ...
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205 views

Watchguard M400 Tagging VLAN

I have a problem with WatchGuard Firebox M400. I put interface 2 into VLAN mode. I created earlier few VLANs like: 10, 20, 30, 40, 110 and 199. When im puting those VLANs in that interface, i ...
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2answers
924 views

Two IP address on one network adapter over macvlan

On Debian Linux dist I need two IP address with different mac address. On each of them one server will run on port 80. So i need something like this: ip: 192.168.2.1 mac: xx:xx:xx:10:xx:xx ip: 192....
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3answers
2k views

Assign VLAN to multiple ports in SonicWALL TZ300

I have a SonicWALL TZ300 with Cisco SG200-08 smart switches. My X1 interface is my WAN and my X0 interface is the default LAN. My X2 interface is 192.168.1.1 and is in a custom public zone (LAN2). I ...
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1answer
302 views

Tagged and Untagged Cisco vLAN port

I have a whole bunch of Dell switches I support and most of our users have a VOIP phone on vLAN 999 and a PC on a couple of vLANs. On the Dell switches I simply set the PC's vlan to untagged and then ...
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145 views

Route WAN traffic to router which is placed behind switch first

Would be possible to do the following as it is at image? I would like to send all traffic coming from internet to Router with FW first and then to the LAN. I thought this could be achieved by using ...
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405 views

Create a vNIC w/o VLAN ID using HP NCU

On a physical server hardware System x3550 M3 with NIC teaming configured, is that possible to create a vNIC without VLAN ID assigning to it in HP Network Configuration Utility? Perhaps, this can be ...
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459 views

why iptables SNAT doesn't help to answer ARP on the vlan tagged subnet?

I'm using iptables SNAT to setup a "router" on a linux box, it suppose to do NAT for 2 subnets. one untagged subnet 10.0.10.0/24, the other one is vlan tagged subnet 172.16.0.0/24. both subnet come ...
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653 views

Atheros L1 Gigabit Ethernet Driver VLAN support

I am using Atheros L1 Gigabit Ethernet Driver on 60 desktop machines and these machines I need to have on VLAN 2 for which I need to create VLAN 2 on all these desktops but the driver does not shows ...
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137 views

Routing issues with bonded VLAN trunk bridged to Xen dom0 on CentOS

I am setting up a new dom0 which has a LACP bond. Connectivity is fine between the network, dom0 and domU's without the trunk enabled. Once I start tagging traffic on the switch and add the ...
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1answer
336 views

Trouble Switching From non-VLAN to VLAN-Enabled Network with Sophos Gateway

Nasty conundrum here. Some background: I have a Sophos UTM ASG220 serving as gateway device for a number of networks, with a Cisco 2960 network switch, and a raft of Red Hat 6.6 servers running KVM ...
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111 views

How to setup 2 switch with VLAN and 2 IPs for each in different block

Below I have depicted the required network. In this network: Lets say GW1 is in IP1 block and GW2 is in IP2 block. There are 2 Linux running PCs with 4 NICs. 1st Linux PC is connected to 2 GWs with ...
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1answer
33 views

voice vs data device authentication

When a device is plugged into a switch (let's say, a Cisco Catalyst switch) how does a switch know whether the device is a VoIP one - and subject to being placed into the voice VLAN - or some other ...
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540 views

ARP/ICMP in a network environment with overlapping IP address

Currently I have lab network setup to mimic customer's network deployment. (According to the customer, they are using VRF over VLAN so that their customer can have overlapping network connecting to ...
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1answer
267 views

Managing VPN-based users/VLAN access to a test environment

I'm involved in the setup of a demo/user lab environment comprising several racks of server kit. The idea is that potential hardware/software customers can be given a VPN account that will allow them ...
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1answer
969 views

Need VLan to route to Internet

I have a Sangoma box here. This is Lync in a box... There is AAR Reverse proxy (VM) on the server and it has an IP of 10.10.9.7 on The "External" interface. I have 10.10.10.5 on the "Internal" ...
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1answer
981 views

Correct way to setup VPN/VLAN for small business NETGEAR FVS336G

My current employer has a horrendous setup for his internet, 2 Virgin Media cabled lines with routers that you'd use at home. So we've had Fibre Optic installed and a Pool of 5 Public IP Addresses. ...
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623 views

Layer 3 switch redundancy solution (with vlan's, stp)

So basicly I have a setup which I want to get to work but i'm unable to. It's possible I am overseeing a lot of things but let's get to it anyways. The current situation is a network with 4 switches ...
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1answer
787 views

enable lacp mode active on isr 2951

Any idea if ISR 2951 support LACP ... i don't see any cli command to enable it. My router IOS version is 15.2(4)M7. Can you help please. below is my config: interface Port-channel1.1 description ...
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1answer
243 views

HP RIP on LAN Topology

We have 1 main core HP Routing Switch in server room that connects other data closet switches and 6 Data Closet switches that connect the clients. We only have 3 VLANS. I have 2 questions: 1.) ...
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5k views

my iperf connection test client side keeps showing connection refused

I am trying to setup an iperf test but the client side keeps getting connection refused message. Server side: ubuntu@webserver1:~$ iperf -s -----------------------------------------------------------...
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1answer
939 views

How can I control bandwidth, access times and priority per VLAN

I'm setting up access points (TL-WA901ND) that can each support up to four SSIDs, which can be assigned to VLANs. I would like to set up three SSIDs, each on a different VLAN, with the following ...
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31 views

Point to point connection not using full bandwith

Here's my network: [A]<------20 Mbit point to point ---------->[B]<-------20 Mbit point to point-------------->[C] At [A] there's a switch, at [C] there's another switch, while at [B] there's ...
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2k views

tcpdump on any interface does not support VLAN

I have tried the following command: tcpdump -i any vlan , on both Ubuntu 10.04 (kernel 2.6.32-36) and Ubuntu 12.04 (kernel 3.8.0-39) and got the following output: tcpdump: no VLAN support for data ...
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124 views

Inter-VLAN Malicious Code Scanning

I am trying to find an inbuilt solution on a Cisco Catayst 3750X Switch to scan all traffic routed from one VLAN to another for malicious code. The situation is that we currently have a development ...
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2answers
407 views

VLAN's between DELL 3548 and DELL 6248 (not using trunk)

I have a 6248 switch on one floor connected to 3 other floors in the building, all seems to be working but on one floor I would like to have a separate VLAN for a WIFI Access Point, and also boardroom ...
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1answer
189 views

What if a device doesn't have TRUNK port?

By reading Cisco's manual at http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli_rel_4_0_1a/CLIConfigurationGuide/AccessTrunk.html it says that a port can be ...
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1answer
59 views

VLAN inside Guest machine/domU

hi is it possible to create VLAN inside guest machines? using Xen 4.2 with Ubuntu as dom0,all guests are Centos On host i have 2 bridges in two different VLAN connected to bridge, virtual machine ...
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206 views

Best way to divide network?

I own a small company that recently is outgrowing our current network. Currently we have a 10.216.170.0/24 network and therefore only a limited number of available IP adresses. Now, we have a single ...
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1k views

Open vSwitch double VLAN tagging is ignored

I'm trying to add a flow to a KVM machine using Open vSwitch 1.10.2 for it's networking, which double tag all traffic comming from one of the virtual machine's ports. I'm using the following command ...
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541 views

Untangle running on ESXi sending tagged VLAN to Cisco switch not working

basically here is my setup: [Host A] = A hypervisor running ESXi 5.0 [Switch A] = A Cisco 2960-S Series 48 port switch [Switch B] = A Cisco 2960-S Series 48 port switch [P-Router] = A physical ...
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2k views

pfSense NAT routing using VLANs

We already have pfSense installed and it is working for our single IP address on 1.1.1.1. We also have a further 3 ip addresses (1.1.1.2, 1.1.1.3, 1.1.1.4) which are set up as VLANs on the WAN ...
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376 views

Communicate between Voice and Data VLAN

I have a network of computers, on which I also have an Avaya IP Office phone system with several IP phones. Currently the IP phones are on their own IP subnet range, but I want to create a separate ...
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1answer
322 views

Netgear GS108T v2 switch - packets exit wrong port

I have an eight port Netgear GS108Tv2 between my firewalls and their gateways. One switch serves my two firewall and the two ADSL and SDSL routers. One of the firewalls (pfSense) pings its gateway ...
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1answer
1k views

Linux Bridges - Tags on interface vs. on bridge

What is the difference between tagging on the bridge vs a physical interface then adding that tagged interface onto the bridge? I'm assuming if I want two total VLANs segmenting network traffic to ...
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1answer
842 views

different Native vlans on the ends of trunk link

http://www.techexams.net/forums/ccnp/53867-different-native-vlans-ends-trunk-link.html so i read this, but i still can not get traffic between two ends of a trunk link, each with a different native ...