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

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4answers
1k views

how to config vlans in windows 2008 with virtIO nic

I just installed Windows2008 in my debian OS with kvm. And i install virtIO nic. I just wanna config virtIO nic with vlan. But after search many times. There seems no solution here. So, Is someone ...
1
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1answer
390 views

ovirt vdsm vlan - cant create virtual lan only wan port

I installed ovirt 3.3 on fedora 19 on my server. The Server has one ethernet connection, and it is a WAN so I don't have a LAN ip, or DHCP. I set a bridged interface (ovirtmgmt) on this interface ...
0
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1answer
822 views

vSphere — isolated network between hosts

How can I isolate traffic between vSphere hosts, for a test environment, while maintaining the same IP address configuration as the current guest OS's? I have two ESXi 5.0 hosts on my LAN. Each hosts ...
2
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2answers
447 views

pfSense 1.2.3 can't talk ARP beyond a switch two hops away

I have the following devices on vlan93 on my network: pfsense (192.168.93.1) core-sw1 (192.168.93.2) edge-sw1 (192.168.93.3) pf-switch (192.168.93.100) devices (192.168.93.120) Physical ...
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2answers
238 views

Is VLAN separation required for multiple networks?

I am setting up a Dell 6248 combining separate switches used previously. I am planning the following architecture: VLAN 1 - External traffic (each server's public interface connects to this) VLAN 2 ...
1
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1answer
294 views

Is it possible to send different-per-subnet DNSes from the single ISC DHCP server?

The case I want to cover is to send different DNS server for one, isolated VLAN, which purpose is to give internet-only access - for our guests. It has no access to our internal network, so it ...
1
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1answer
1k views

VMWare vSwitch VLAN IDs and tagged/untagged ports

Similar to this question: What happens when a port is configured as ACCESS and is a part of VLAN 'X' and we get a packet of VLAN 'Y' on that port? Will the switch drop it or it will add a VLAN ...
1
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1answer
827 views

HP Procurve 2610 vlan routing

Can anyone tell me why inter vlan routing is working for all vlans except my newly created vlan 4/ I have an hp procurve 2610. Any help would be appreciated. I have basically this 1 switch with all ...
1
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1answer
2k views

New VLAN configuration on Citrix XenServer 6.5

We have an existing xenserver environment I have recently inherited. We have multiple xenserver vlans working that can all talk to each other. I am now trying to set up another network and cannot seem ...
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0answers
117 views

Guest wireless. HP to Cisco VLANs

I'm having trouble getting guest Internet access working. I have HP V-M200 WAPs and a Cisco RV042G for internet and a HP 1910 switch in the middle. I created a second Wireless Community/SSID on the ...
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2answers
85 views

Connect four Modems having same IP with a single Ethernet Switch [closed]

I have a scenario where i have 4 modems connected to a switch. all four modems have IP address 192.168.0.1(default). i want to connect all of these four modems with a single switch in a way that i ...
0
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1answer
120 views

PC in two VLANs with one interface ping issue

im having a problem with a netkit lab that im wornking on. I have one switcher and 3 PCS (PC1, PC2 and PC3). PC1 and PC3 must be on VLAN 100(100.1.0.x/24), PC2 and PC3 must be on VLAN 200 ...
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2answers
1k views

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

I currently have a managed switch (DGS-3120-24SC) configured for private VLANs (secondary and primary port groups). Secondary ports are isolated from each other and forwarding is not possible between ...
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1answer
85 views

Transfer VLAN tagged packets over WLAN? [closed]

I have the following composition of devices: [selfmade router] - ethernet - [WLAN router 1] ----- wlan ------ [WLAN router 2] WLAN router 2 has 5 ethernet ports, each as an own VLAN, so 5 VLANs. I ...
2
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1answer
140 views

What could be wrong with my VLAN?

I've got a VLAN 10 setup as a management VLAN. The management VLAN comes off port 48 and links to another set of switches that do not support VLAN's so it was I believe set up as an untagged access ...
2
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1answer
289 views

Setting up NLB in a VLAN

I have a network layout like this (ESXi hosts): Internal Network + +-----------------+ ...
1
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1answer
259 views

cisco 2851 router: can't view switch ports

I want to setup vlans on a 2851, but I'm not sure how to access the switch ports. I can access or view them. Is there something I have to enable? I have some devices plugged into the switch ports and ...
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1answer
49 views

Changing from router DHCP to Server DHCP [closed]

I want to setup a Linux DHCP server instead of a router based DHCP. I'm guessing that I will need to turn off the router DHCP, but keep the router as the gateway. I think that the BCAST DHCP requests ...
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2answers
402 views

Setting up VOIP system on separate VLAN / Server on default VLAN

First off, I am not a network engineer so apologies if I get terminology messed up, i realize accuracy is important here. Currently, we have a small(ish) network with around 40 devices and 20 IP ...
2
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1answer
3k views

Multiple, different VLAN trunks to KVM guests (Linux)

I've hit a roadblock of sorts with an architectural challenge. I've got a server running KVM - which will feature a number of guests, some running virtualised firewalls and others, just plain web ...
1
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1answer
191 views

What determines which of a DHCP Relay Agent's IP addresses are attached to relayed requests?

I have a vlan with multiple IPs set, and a helper-address: vlan 15 ip helper-address 172.17.1.11 ip address 172.17.5.254 255.255.255.0 ip address 172.17.51.254 255.255.254.0 All relayed requests ...
1
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1answer
80 views

Name resolving issue

I have a problem with my VoIP server name not resolving by voip.companyname.com If I try to ping it from windows 7/w2k8 the request is not coming back unless I type FQDN which would by ...
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2answers
294 views

Portfast on a trunk port on a Cisco 3750

Good morning everyone! Some history, we have mixed environment of Dell Powerconnect 6248 switches and Cisco 3750 switches and a Cisco 6500 core for our Head office. We have two VLANs 1 & 20 ...
1
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1answer
623 views

how to configure static ipv6 and additional ipv6 with same vlan?

I'm having trouble with configuration static ipv6 address and additonal ipv6 on same interface(eth4). static ipv6 configuraiton issue firstly, I configure below vi /etc/network/interfaces auto ...
0
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3answers
663 views

Ruckus wireless AP and Dell PowerConnect configuration problems

We are working on trying to get some Ruckus Access Points to work correctly on our network. Currently our network is as follows: VLAN 10 - Servers VLAN 11 – Computers/DHCP VLAN 12 – Voice VLAN 13 – ...
3
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1answer
6k views

Multiple Vlans per NIC on Windows 2008

How do I have multiple vlans (tagged) go over one NIC in server 2008 R2? I know it's possible in *nix and I know how to do that on the network side. But it doesn't help if the server 2008 R2 can't ...
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0answers
30 views

How do you create virtual NIC's with VLAN in windows server like Linux? [duplicate]

Under Ubuntu Linux I can create a VLAN like this: /etc/network/interfaces auto vlan10 iface vlan10 inet static address 10.1.10.10 network 10.1.10.0 netmask 255.255.255.0 vlan_raw_device ...
3
votes
1answer
164 views

Unicast traffic between hosts on a switch leaving the switch by its uplink. Why?

I have a weird thing happening on our network at my office which I can't quite get my head around. In particular I can't tell if it's a problem with a switch, or a problem with configuration. We have ...
1
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1answer
77 views

Host not showing in ARP even after broadcast

serverfault community. What I would like: to determine the current IP of a host (a networked camera to be specific) What I have: its MAC, its previously documented hostname and IP What I have ...
0
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1answer
343 views

is it possible to use ms loop back adapter to setup local vlan

Is it possible to use Microsoft Loop back adapter to set up Lan connection between two computer which is logically isolated from the main network? 1st computer: has a regular ip stack 192.168.1.x ...
2
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2answers
1k views

VMware ESX: Unable to delete PortGroup. 1 active ports

At work we have an ESX 4.1 cluster with some vlan's (Port Groups) configured on a vswitch on each host. A lot of these port groups aren't in use anymore so we decided to clean them up. We don't have ...
2
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1answer
4k views

Static LAG and VLAN Trunking Differences?

What is the difference between Static LAG and VLAN Trunking and which would be better to use going from Switch to Switch with CAT5 in a VLAN environment?
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3answers
132 views

Cisco switch inter-vlan access

I have Cisco Catalyst 2960-s switch and I want to configure three Vlans (A; B; C) I want to : Allow traffic between A and B Allow traffic between A and C Block traffic between C and B or if ...
2
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1answer
545 views

SR-IOV on KVM hosted guest using tagged vlans

I have read a few posts here on NOT using tagged vlans in KVM because of the emulated e1000 drivers, but I have a situation where I need to use tagged vlans. Because of this we used SR-IOV enabled ...
1
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0answers
121 views

Linux as gateway with VLANs failing for local network

We have a private VLAN being routed out from a host connected both to it and to our public network. Hosts on the private VLAN have the private IP address of the gateway host (10.2.2.82) set as their ...
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0answers
325 views

Cisco vlan entry missing in vlan.dat, but appears in running-config

One of our vlan's (ID: 104) stopped working suddenly and computers on that vlan failed when trying to obtain a dhcp ip address. On the Cisco switch if we do show vlan, this command is supposed to ...
0
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3answers
154 views

make web portal visible on two different vlans on same interface

We have recently set up a new Aterisk pbx server based on our previous pbx (also Asterisk) which was installed by an external company. We've kept the configuration of the server the same, all we did ...
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votes
1answer
96 views

How can i configure different multiple vlan with dhcp server with a single ip subnetting [closed]

Hello every one out there!! I got a issue i would like to share with you, expecting to have it sorted out. I want o set up vlans on my network, in order to separat same department,which can be about ...
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votes
1answer
142 views

VLAN routing setup with VPN on Cisco ASAs

We currently have two ASA5515-X firewalls, what we want to do is dedicate one of them to providing AnyConnect VPN and two site to site VPNs only, with the second ASA handling firewall ACLs for ...
4
votes
7answers
29k views

Why does a VLAN have an IP address?

A dumb question for the majority, but I am interested to know "why does a VLAN have an IP address?" Is this address different from the default gateway? Or is this address, same as broadcast address ...
0
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1answer
79 views

Provide Internet To Two Networks One Connection

Currently we have one network set to 192.168.1.x and is set via DHCP providing internet to all machines on that network. Recently we've began development on programmable logic controllers that are ...
5
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1answer
508 views

Tag/Untag VLANs from Port Perspective on HP Switch

I'm familiar with vlans and tagging, and we usually use the command line interface for our HP Layer 3 switches. I've done quite a few: vlan 10 untagged 21 I've always wondered if this was possible ...
11
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2answers
970 views

Encryption over gigabit carrier ethernet

I would like to encrypt traffic between two data centres. Communication between the sites is provided as a standard provider bridge (s-vlan/802.1ad), so that our local vlan tags (c-vlan/802.1q) are ...
2
votes
1answer
1k views

D-link DAP-2590 VLAN configuration

So we have been fighting this issue for well over a year. It's been so long that I am having to relearn the configuration today. Here's the situation. We're running several D-Link DAP-2590's with ...
1
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1answer
223 views

HP N40L / Intel 82574L VLAN Leakage

This is a follow on from a previous question (Switch sending DHCP packets to wrong VLAN) but the problem turns out that it's not with the switch, but more so in the NIC hardware I believe. Basically, ...
2
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1answer
370 views

Virtual bridged networking with VLAN, could not ping

I require a virtual network with VLAN be build between two virtual hosts - which can be (lxc/ vbox -ubuntu or win xp). I tried with lxc and vbox with Ubuntu and was finding difficult to make it work ...
2
votes
3answers
2k views

VLANs using one managed switch or link router to unmanaged switches?

I'm the resident IT guy in an office with about 20 workers, amongst 3 separate companies who sublet an office. We are wired with 24 ethernet ports dotted around the offices that all lead to a patch ...
3
votes
1answer
766 views

Domain Based Port Forwarding with VLAN routing [closed]

At my new workspace I want to setup a network that enables me to deploy my web development work on Dev, Test and Accept servers (VMs) with (controlled) access from outside the network - based on ...
2
votes
1answer
349 views

Same VRRP group, multiple VLAN

Let's say a gateway has traffic between vlan 11 and 22: Gateway 1 -- FastEthernet 0/1.1 -- vlan 11 -- 192.168.11.1 Gateway 1 -- FastEthernet 0/2.2 -- vlan 22 -- 192.168.22.1 Gateway 2 -- ...
0
votes
2answers
546 views

Sharing internet to Private WAN routing

I'm trying to help out with sharing internet over a private WAN installed between two sites, unfortunately the routers are controlled by a company that won't respond to support requests, but they have ...