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

learn more… | top users | synonyms

0
votes
2answers
14 views

How can I see whether tcp-offloading is enabled on a ubuntu server?

I would like to find out if my Ubuntu VM uses tcp-offloading to increase the performance of VXLAN encapsulation. Where can I find this information on my machine?
1
vote
1answer
32 views

Figuring out the most efficient use of an ip range

I am working with Packet Tracer atm and have 3 subnet plans : assigned(management(104users) staff(43 users) admin(35 users)). I have an ip address range of:38.191.0.0 and subnet mask of ...
0
votes
1answer
24 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) ...
1
vote
2answers
1k views

Draytek 2830, Multiple VLANS on Same Port

The Kit Ubiquiti Unifi Long Range Wireless Access Point Cisco SG200-08P Switch (VLAN, POE Support) Draytek 2830VN Router The Problem I need to enable Multiple VLANS against a single port on the ...
1
vote
0answers
34 views

Static route between vlans

Windows server 2003. MS TMG with two NICs. I have two vlans in my network. vlan1: 200.1.1.0/255.255.255.0 vlan2: 200.1.2.0/255.255.255.0 I have an ISA server with two NICs in vlan2. NIC1: ...
1
vote
1answer
21 views

If you switch an interface's vlan does it stop traffic?

I'm configuring a cisco catalyst switch and I want to change the vlan for the all of the ports on the switch away from the default vlan 1. I know how to change a vlan on an interface, I want to know ...
0
votes
1answer
17 views

Create vxlan - RTNETLINK answers: Operation not supported

I knew nothing of vxlan until about 30 minutes ago, however I've come up with an issue installing OpenStack, which is vxlan related. Trying to create a vxlan on an interface on Ubuntu 14.04 (kernel ...
0
votes
1answer
1k views

VLAN & WiFi & DHCP with Cisco SG200

I'm trying to configure a small business network with one Cisco SG200-26, a Linux server and two TP-Link TL-WA801ND. I have set up the APs to have two different SSIDs, Public and Staff, and have ...
1
vote
1answer
26 views

Why a computer in one VLAN cannot get an IP address from a DHCP server in another VLAN?

Can anybody please explain as to why a computer in one VLAN cannot get an IP address from a DHCP server in another VLAN by default? Why is there a need for a DHCP Relay Agent or an IP helper, they all ...
4
votes
2answers
1k views

Bridging two VLANs together

I have a connection to a network service provider with two VLANs on it. One VLAN has the internet. The service provider has defined a default router and assigned me a subnet of IPs attached to that ...
0
votes
0answers
11 views

Cant get multicast to work across VLANs using pfsense router

I have a pfsense router as a VM on hyper-v, on which I have configured multiple VLANs. I have an application on VLAN1 (10.60.1.0/26) which multicasts to multiple VMs on another VLAN2(10.70.1.0/26). ...
0
votes
0answers
24 views

Cisco 3750 intrer-VLAN routing not working

I've defined three VLANs on my 3750 switch. I've also enabled the routing on it. It is a standalone switch. But the routing is not working between the VLANs. I don't know what to do. There is the ...
-3
votes
1answer
42 views

Can a computer on one VLAN acquire DHCP from another VLAN?

Can you please explain what needs to be done in order for a computer in one VLAN to get an IP from a DHCP server in another/different VLAN? (Yes if something is done and no if that something is not ...
0
votes
1answer
48 views

pfsense bridge of vlan interfaces

Hardware Setup AMD E1-2100 Mini-ITX Motherboard with Onboard Gigabit (re0) Intel PCI Express (x4) 4-port Gigabit Adapter (igb[0123]) Software Setup pfSense v2.3 I'm trying to replicate my ...
0
votes
1answer
2k views

Getting invalid input error on procurve 2510 when setting up ip helper-address

I have 3 HP Procurve 2510G-48 and I want to setup a VLAN for public wifi (VLAN100). Originally I just had the default vlan1. I have computers communicating across switches on VLAN100 with static IP ...
0
votes
0answers
8 views

Cisco ISA 550 firewall VLAN physical ports removed

I was adding VLANs and by mistake I added all my physical ports as "Access" to the last VLAN. Now, all my other VLANs are out of network. How can I fix it?
0
votes
1answer
10 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 ...
0
votes
3answers
47 views

Configure small LAN to WAN network

I want to setup a small LAN that can connect to Internet via my ISP's router (I have only one open port on my ISP's router and 6 public IPs). On my side, I have an Ubiquity Router that I connect to ...
-3
votes
0answers
27 views

CentOS being used as DCHP server I need to have it service another network

I have added a new Vlan40 to a network & want the DHCP server to manage this one as well. currently It only manages a guest WIFI Vlan10. I have config. Vlan40 already & cant connect manually ...
4
votes
1answer
3k views

Unable to make work both private and public ip network on openvz container in Proxmox

I'm using Proxmox 3, it is a fresh installation. For those who know, I'm using OVH Vrack 1.5 (along with a previous Vrack 1.0). My server has two interface eth0 and eth1, I succeeded to configure ...
2
votes
2answers
20k views

Configuring VLANs on HP 1910 switch

I understand how VLANs work, but am not quite sure what the various settings in my HP switch actually do. I have an HP 1910 switch, and I'm using the web interface to configure it (personally I'd ...
0
votes
1answer
25 views

Will resizing a subnet mask make devices with the former netmask inaccessible?

I have a default VLAN whose subnet mask is a /28. I now intend to use the default VLAN for imaging, so clients need to be able to receive DHCP leases from this VLAN. In order to have enough ...
7
votes
2answers
8k views

tcpdump: capture one of several vlans

I want tcpdump to capture VLAN 1000 or VLAN 501. man pcap-filter says: The vlan [vlan_id] expression may be used more than once, to filter on VLAN hierarchies. Each use of that expression ...
0
votes
0answers
12 views

linux bridge with vlans

I have a couple servers that I need to use lacp on that would hook in to the bridge for kvm to tap off of. I need to split out several vlans from there. my cisco switch has 2 ports set to trunk ...
1
vote
1answer
28 views

802.1q PXE boot

I've been using CrucibleWDS for the past year to image machines in my environment. My dhcpd.conf file lists the PXE boot information for clients attached to the particular network I use for imaging. ...
0
votes
0answers
22 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 ...
1
vote
1answer
46 views

Best way to connect dual SSID / VLAN wireless to Watchguard firewall

I'm currently sorting out our network so we can have new wireless access points with dual SSIDs, one for internal use and one for guest use. These will be setup so each SSID is on a different VLAN. ...
1
vote
2answers
55 views

VLAN sending data to ports it shouldnt have to

I noticed (based on activity lights) that VLAN traffic between two switch ports are being sent to many switch ports. Here's my scenario: Port 1 is a "mode access" switchport for VLAN 100 (untagged ...
1
vote
0answers
22 views

Configure Cisco QoS for VLAN

I have two VLANs (20 and 21) that are accessing the same resource on a switch. Clients on VLAN 20 access this resource only at schedule times, but when they do, they generate lots of traffic as ...
2
votes
2answers
2k views

Linux is sending ARP requests to hosts in other subnets?

Setup Host B <--> Router <--> Host A Host A: IP = 192.168.1.10, Net = 192.168.1.0/24, VLAN = 1, Default GW = 192.168.1.1 (Router) Host B: IP = 192.168.2.10, Net = 192.168.2.0/24, VLAN ...
3
votes
1answer
34 views

vlan qemu: guest listening from other guests

I'm trying to simulate a little network of 3 machines using QEMU where a machine (deb1) is directly connected with the host and the other 2 machines (deb2, deb3): Host ...
0
votes
2answers
93 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 ...
0
votes
1answer
27 views

802.1Q and Network Security

I've recently purchased some TP-Link managed switches (two TL-SG1016DE and one TL-SG105E). I purchased the two first and set it up using 802.1Q VLANs to segregate my DMZ and my LAN, using ...
1
vote
2answers
85 views

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 ...
-1
votes
1answer
23 views

disallow Samba WINS from making hostnames viewable across subnets

I have a samba server set up at work for simple things, such as printer and folder sharing. There is a "internal" subnet and VLAN and a "guest" subnet and VLAN. Samba runs on the same Debian machine ...
1
vote
0answers
22 views

Auto Set VLAN ID Hyper-V 2012 R2 Cloud

I have a lab environment with multiple clouds configured in Hyper-V SCVMM. When a guest machine is created in the correct cloud say "Yellow" it is randomly given one of the 5 Vlans we use. If it is ...
0
votes
1answer
37 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 ...
-1
votes
1answer
23 views

Cisco sg500-24p web-based configuration utility ip adress

How can i know what is the ip adress to the web-based control panel for my Cisco sg500 if it is not the default and if i don't want to rest the switch, i need to change vlan for a port ? The switch ...
1
vote
1answer
67 views

Configuring a private vlan for a test lab, but still access the internet

I have been looking around and trying to find ideas on how to isolate a test lab from our main network whilst still allowing the test lab access out to the internet. At the moment, our main network ...
2
votes
1answer
65 views

Bond on top of VLANs or VLANs on Top of Bond

Both ways seem possible. What is the better approach within Linux? Better means more efficient assuming my switch doesn't know about LACP+Tagging. Thanks!
0
votes
0answers
15 views

OpenStack SingleNode on existing Infrastructure

We currently have one server which isn't needed for anything else, so we wanted to install an openstack single node configuration to get some hands on time. Everything is finde except for the external ...
10
votes
7answers
3k views

Are VLANs necessary for my environment?

I'm the new network manager for a school. I've inherited an environment made up of several Windows servers, about 100 Windows clients, 10 printers, 1 Cisco router, 6 Cisco switches, and 1 HP switch. ...
1
vote
2answers
82 views

Upgrading Layer 2 Switched Network to Layer 3

I currently have a business network comprised of older but still fully working Layer 2 managed GigE switches. If I would like to have inter-vlan routing on this network (without having to setup a ...
0
votes
2answers
65 views

Inter VLAN Routing Issue

Here's what I have setup 3 Networks across 3 switches (3x C3650) 10.7.64.x/24 (Vlan 7) 10.10.10.x/24 (Vlan 20) 192.168.1.x/24 (Vlan 15) The switches are all connected to each other, with Switch ...
1
vote
0answers
30 views

Router OpenVPN client connected, but remote VPN machines not visible

My goal is to connect my Asus RT-68 router to remote VPN network, so LAN computers can access remote ones. Remote OpenVPN server is run on Zentyal Linux distro. My LAN address range is 100.100.0.0/24 ...
0
votes
0answers
40 views

VLAN Cisco Packet Tracer

Im creating a VLAN and i have connected everything right but I need to use the classfull C network 192.168.0.1 and subnet it to 4 equal size network.. So far i know the first IP on PC0 & PC4 I ...
1
vote
1answer
48 views

Manage Windows Server 2012 and trunk the Hyper-V VM (same physical NIC)

I'm trying to use Hyper-V to deploy a pfSENSE box inside of it. But, the scenario is: 3 VLANs VID: 1000 VID: 2000 VID: 3000 On a physical switch port, I've tagged the Server physical port with ...
5
votes
2answers
181 views

Hyper-V Virtual Switches and DHCP

What is the best way to force VLAN segregation accross multiple Virtual switches? I have probably a rather complex setup going in the effort to get essentially 4 separate virtual switches. The ...
0
votes
1answer
178 views

Cisco SG200-26 - Can't change management VLAN

I've purchased a new SG200-26 switch and upgraded it to the newest possible version: I configured multiple VLANs - nothing special - however if I try now to change the management VLAN (as I did ...
0
votes
0answers
28 views

Watchguard m400 limit bandwith per VLAN

is that possible to limit bandwith on Watchguard Firebox m400 per VLAN? I have few vlans on one physical interfaces and I need to limit the the bandwith. I know, I can limit it per policy or per ...