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

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3
votes
0answers
53 views

Configuring Container with bridges and vlans (server only?)

I have two groups of lxc contianers on a server and want to isolate their network traffic for security reasons. I will be using port forwarding so the containers much each have separate IP's. I know I ...
0
votes
0answers
44 views

VLAN configuration on Ubuntu

I need some help with vlans because I'm a bit confused. I setup a transparent vlan over a topology like the one bellow: Host_1 (vlan 11) <---> [switch] <--(vlan 11)--> [switch] <---> Host_2 ...
-1
votes
2answers
53 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
votes
1answer
66 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 ...
2
votes
2answers
349 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 ...
-1
votes
1answer
68 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 ...
1
vote
1answer
118 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 ...
2
votes
1answer
84 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
votes
1answer
102 views

Setting up NLB in a VLAN

I have a network layout like this (ESXi hosts): Internal Network + +-----------------+ ...
1
vote
1answer
96 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 ...
0
votes
1answer
44 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 ...
1
vote
2answers
107 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 ...
1
vote
1answer
84 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 ...
2
votes
1answer
1k views

VLAN tags not shown in packet capture (Linux) via tcpdump

I am adding a tagged VLAN onto eth0: #ip link add link eth0 name eth0.20 type vlan id 20 This results in: #ip link 2: eth0: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc ...
1
vote
1answer
65 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 ...
1
vote
1answer
636 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
vote
2answers
107 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
vote
1answer
94 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 ...
1
vote
0answers
25 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 ...
1
vote
1answer
46 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 ...
4
votes
1answer
205 views

Designing segmented LAN with fairly shared hi-speed internet access on a tight budget

With another member of the owners' association, I've been tasked with designing and setting up shared, hi-speed, internet access, for our apartment building. We have very little budget and hope to be ...
0
votes
1answer
157 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
votes
2answers
333 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 ...
4
votes
2answers
246 views

VMware vSwitch and double tagging (QinQ)

I'm experiencing an issue while trying to pass double tagged through a vSwitch. A physical interface on the VMWare host machine is receiving double tagged traffic - the outer tag differentiates ...
0
votes
0answers
103 views

Single VLAN ID out of 5 not working in Hyper-V 2012 Cluster / SCVMM 2012 SP1

I am having strange issues with one specific VLAN in a Hyper-V 2012 cluster. The cluster has 3 servers, each one has a "Management" adapter for management traffic and "VM Data" adapter for virtual ...
2
votes
1answer
310 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 ...
-2
votes
3answers
89 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 ...
1
vote
0answers
60 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 ...
0
votes
1answer
530 views

Unable to access VLAN host from VLAN interface in CentOS

I am playing with Vlan configuration on CentOS 6.4 I have 2 interfaces, eth0 and eth1. I have configured 2 VLAN interfaces eth0.20 and eth0.30 as #file: ifcfg-eth0.20 #------------- ...
-2
votes
1answer
54 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 ...
0
votes
0answers
87 views

Second VLAN to WAN Draytek 2850

I have a Draytek 2850 that routes LAN1 to WAN1 as specified, but am yet failing to use a seperate VLAN for a WLAN-AP (Netgear WNAP210) with VLAN ID 2 to connect to WAN1 via LAN2. Network Setup is as ...
-2
votes
1answer
83 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 ...
0
votes
1answer
74 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
votes
1answer
174 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 ...
0
votes
3answers
112 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 ...
1
vote
1answer
152 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, ...
0
votes
1answer
44 views

Separate static ip's from one port on modem with smart switch

I have a network where our service provider gave us one port on our modem that has static ip's. Was confused on how to separate these ip's. I was going to use a smart switch with vlan as such: vlan 1 ...
2
votes
1answer
270 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
515 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 ...
2
votes
3answers
394 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 ...
2
votes
1answer
160 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
161 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 ...
2
votes
1answer
219 views

Multiple VLANs in the same subnet

Is it possible to have multiple VLANs in the same subnet, with the same gateway address (TMG)? I want to avoid having many Subnets (and vNIC's in TMG) just to isolate sets of a few hosts. IP: ...
0
votes
3answers
281 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 – ...
0
votes
1answer
108 views

VMWare Workstation and network isolation

When I install VNC or some other RAT to a container in my VMWare Workstation machine box, what ways can I prevent access to my local network and other machines on my network. Is this where setting up ...
10
votes
2answers
376 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 ...
0
votes
1answer
51 views

Offloading backups to secondary network

I'm trying to solve a problem- Currently, we are constantly backing up and have no budget for additional servers. Our production network is still a 10/100 and handles voip, SQL plus our backup ...
3
votes
1answer
396 views

Send trunk directly to vm in HyperV 2012

I'm setting up OpenBSD as a VM in HyperV 2012. It would be easier for me to just create one interface on the vm and have OpenBSD take care of setting up the vlans. Is it possible to tell HyperV to ...
1
vote
0answers
128 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 ...
3
votes
1answer
112 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 ...