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 (1)

0
votes
0answers
12 views

Optimised VLAN allocation in Cloud Environment

In a multitenant environment, we need to assign tenant to a particular VLAN for security concerns. What are the factors that should be considered while assigning a new VLAN to a tenant. The VLAN may ...
1
vote
1answer
17 views

VLAN routing query on HP Switch

I have Layer 3 HP switches throughout my organisation. They are set up to perform routing between all the VLANs connected to them, and everything is working. I am pretty proficient with using them, ...
0
votes
0answers
25 views

Configuring CentOS NIC for an untagged + tagged VLAN

I have a CentOS 6.5 system with 1 physical NIC, which is connected to a switch. The switch is configured so that VLAN 104 is untagged and VLAN 101 is tagged. The VLAN104 is network 172.22.20.0/24 ...
0
votes
1answer
25 views

Virtualized Linux firewall as router on the stick for cisco switch

I have got: Linux(virtual maschine on esxi) <---trunk---> cisco Switch. On virtual maschine vSwitch setup: VLAN ID 4095 Enables trunking on port group (VGT Mode) LINUX interfaces file: ...
0
votes
0answers
67 views

VLAN setup Cisco SG300 and SIP gateway

Hopefully someone can shed some light here. I'm quite new to networking and not too sure if I'm doing the right thing here. We are setting up a new VOIP phone system with SIP gateway for our company. ...
0
votes
0answers
7 views

SRP521W Intervlan routing and NAT

I've a Cisco SRP521W router which I've set up with two VLANs called normal_Lan and SWSVLAN. I don't want devices on each VLAN to communicate with each other so I've turned INTERVLAN Routing OFF. ...
0
votes
0answers
23 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 ...
0
votes
1answer
35 views

can't ping the GW when configure linux with two vlans?

my scenario: vlan1 <--------> [interface0/1] L3 Switch [interface0/2]<-----------> vlan2 by follow this tutorial: vlan1 have one linux machine: I Configure Linux to have 2 Virtual ...
0
votes
0answers
24 views

VLAN routing to internet

I am currently setting up a new network and wanted to make sure it is being done in the best way as this is my first time working on a NetVanta 1234P and I am having issues with routing The client I ...
0
votes
0answers
14 views

Bridging multiple VLANs in linux

I'd like to clarify some issues I have with bridging tagged traffic on Linux machine. I have a 2.6.20 (802.1q, bridging, ebtables are enabled) kernel and a device with two net interfaces (eth0 and ...
0
votes
0answers
22 views

Configuring hybrid port in Huawei Switch

Let me beging saying that I am now studying to get the CCNA R&S certification, but at work I am dealing with another issue that may be out of the objectives of a CCNA R&S The scenario is the ...
0
votes
1answer
39 views

Vmware VLAN change effecting network access

I segmented a large subnet into smaller VLANs. Running VMware vCenter 5.1 / ESXi 5.1 on the hosts. I run a number of guest VMs, Win28k, Cent, RHEL, and Ubuntu. All hosts except the Ubuntu hosts work ...
2
votes
3answers
73 views

VLAN planning and questions

I currently manage an environment with IP addressing of 10.10.10.x/23. We have 3 VLANS set up, and I use that term very loosely. The reason I say I use the term loosely is, the 3 VLANS have full ...
0
votes
0answers
51 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 ...
0
votes
0answers
29 views

Connecting to Access Switches Management Console via SSH

In a typical lab setup: [USER] -> [Cisco 2960X] -> [Cisco 3560X] -> [Firewall] -> [Router] 3560X carry all the internal routing, VLANs and is the VTP server. It has below IP settings: Management ...
0
votes
1answer
42 views

Completely block access to Cisco

There is Cisco Catalyst 3850 (WS-C3850-48T-E) which is managed only via management port. There are several VLANs on the switch. Also the switch works as a DHCP server. SNMP & SSH are already ...
1
vote
0answers
34 views

HP 5120 vlan not working

So I have this odd issue with our HP 5120 switches. The VLANs will not pass traffic unless a interface with a IP is assigned to the VLAN. Problem is there is a limit of 8 VLAN interfaces that are ...
0
votes
0answers
39 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 ...
0
votes
0answers
31 views

network inbound from other subnets refused to server A, Server A can go outbound to internal networks, but not internet

I have a RHEL 6 server with 4 NICs on 192.168.2.[30-33]/24 Set with DHCP reservations via infoblox, I have checked and the MACs all match up. ifconfig shows /24 for every netmask, and the routing ...
1
vote
0answers
41 views

Inter VLAN Routing

I have VLAN 1 and VLAN 2 setup on HP ProCurve Switch, each linked to a different scope on DHCP server. VLAN1 = 10.220.0.0/23 VLAN2 = 10.210.0.0/21 I can't ping VLAN1 devices from VLAN2 and vice ...
2
votes
2answers
46 views

What drawbacks does VTP pruning pose?

I'm currently learning a bit about Cisco switch configuration and VLAN configuration, specifically VTP. Reading on Cisco's site, the feature of VLAN pruning appears to not be used on a switch/VTP ...
0
votes
0answers
37 views

Hyper-V 2012R2 Private Vlans and Cisco Swith

I have a trouble with configuration of Cisco Catalyst 3850 (WS-C3850-24T-E). Hyper-V server (2012R2) is connected to it. My issue is to separate the virtual machines on the Layer 2 Level. The virtual ...
0
votes
1answer
137 views

Configuring trunk port on Cisco Catalyst switch to serve DHCP settings for multiple VLANs

I am trying to configure a trunk port to serve single DHCP settings for multiple VLANs. I tried the following configuration, but to no avail. switchport mode trunk switchport trunk allowed vlan ...
0
votes
2answers
49 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 ...
0
votes
0answers
35 views

Cisco 3750 vlan mapping

I have a Cisco 3750. Each customer send's data to our switch with the same S-VLAN but a different C-VLAN. They are 5000 different customers all need connecting to a single PPPoE server. How can I map ...
1
vote
2answers
239 views

VLAN not working in trunk between SonicWALL and Cisco

This was caused by me forgetting about a switch. Continue reading only if you're very bored SonicWALL NSA 3500 connected to Cisco Catalyst 3850. The SonicWALL has "sub-interfaces" (VLANs) V2, V800, ...
-2
votes
1answer
135 views

How to setup a VLAN that spans across both Hp 1810g and hp 2920G

I am trying to setup a tagged vlan that spans across both Hp 1810g and hp 2920G. I have setup a trunk and tagged it on both sides but I fail to see an machine on the tagged vlan. I see the untagged ...
0
votes
0answers
32 views

HP 5800 VLAN Translation

I have a network of HP 5800. We route customers on different CVLANS but have them all within the same SVLAN. I have a PPPoE server that runs on 1 switch on VLAN 1500. Example: Site1: 1000:2 Site2: ...
0
votes
1answer
66 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 ...
1
vote
0answers
56 views

DRAYTEK - VLANs with VLAN tagging switches / router

Our company uses Draytek routers (various models, slowly upgrading to 2860n at each site). We have recently purchased a new site, and want to split the network up into separate VLANs, so as to ...
2
votes
1answer
88 views

Hyper-V vlan tagging

I'm trying to get a VM running in Windows 8.1 on a different VLAN than what the O/S is using. I'm using an Intel NIC and have installed the Intel drivers, which have VLAN tagged on by default. It's ...
0
votes
0answers
23 views

Switchport VLAN config

I dealing with an Allied-telesis switch which just doesn't want to do what I need even if I configure it directly through the console. I have machine A plugged into port 1, B plugged into port 2. ...
0
votes
0answers
35 views

C3600 Vlan's convert from IOS V 12.4 to 15.2

I need some help to get vlan's to get working again. I have a c2500 with v12.4 that works with the config above, now with a new c3600 with the same config but with v15.2 I can't put vlan's working. ...
0
votes
1answer
39 views

Sonicwall TZ 180 VLAN Trunking

I was just wondering if the Sonicwall TZ 180 supports VLAN Trunking, and if so do I need SonicOS Enhanced? Thanks
0
votes
1answer
19 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 ...
0
votes
0answers
70 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 ...
1
vote
2answers
59 views

Adding VLAN removes earlier virtual IPs in CentOS 6.X

I added some virtual IPs to my eth0 interface in CentOS 6.5, ip addr add 192.168.100.2 dev eth0 I then simply added a VLAN on eth0. vconfig eth0 10 The VLAN was created but it removes any of my ...
0
votes
0answers
30 views

2 Vlans on a Cisco PIX 515 with DMZ

I have to install an application server on a networks dmz. The application will sit on a network but has no interaction with the other devices on that network. I was thinking that the firewall(Cisco ...
0
votes
0answers
129 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 ...
3
votes
2answers
133 views

Can I set vlan ip to anything?

I'm new to vlans, but I'm thinking to set one up. I'm wondering if I can assign the vlan any network address I want (ex. can I make it say 3.1.0.0/16 if I wanted to?). The reason I'd like to do this ...
1
vote
1answer
86 views

Setting Up VLAN on Dell Switches

I need to create a vlan on a dell switch. I'm brand new to vlans, and have a few simple questions. I have the MAC addresses for devices that are plugged into the switch, how can I figure out which ...
3
votes
1answer
174 views

VLAN configuration in linux not showing tags in tcpdump

i bonded 2 NIC and specified VLAN tag of 11 cat /etc/sysconfig/network-scripts/ifcfg-bond0.11 DEVICE=bond0.11 ONBOOT=yes VLAN=yes NM_CONTROLLED=no STP=no HOTPLUG=no also ifconfig bond0.11 ...
0
votes
1answer
86 views

Switch crazyness

I have a couple of switches here which gives me a headache. Sometimes it works, sometimes it doesn't the whole thing makes no sense. So I linking 2 vlan capable switches together on a regular access ...
1
vote
3answers
81 views

VLAN based interfaces for virtual machines

I am in the process of designing an experiment in which we have multiple VLANs arriving at a single NIC, with each VLAN being associated to a single VM. The straightforward way to do this would be ...
0
votes
1answer
85 views

Trunk port needs to be tagged or untagged?

I linking 2 different brand of switches (Linksys & Zyxel) through SPF gigabit connector. g4 1G-Combo-F Full 1000 Enabled Off Up Disabled Off It says the link is up but ...
0
votes
0answers
79 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 ...
-1
votes
1answer
39 views

On which interface do I see the VLAN Tag packet

I am accessing two virtual machines running on CentOS. I have added one vlan on each machine: On Machine 1- 10.11.20.22 vconfig add eth1 2 ifconfig eth1.2 192.168.0.81 netmask 255.255.255.0 ...
0
votes
1answer
38 views

IM across VLANs

My workplace (a public library) employs two VLANs to service public machines and staff machines separately. The help desk techs are requesting an IM system such that a patron at a machine hooked into ...
1
vote
1answer
349 views

Trouble configuring standard VLANs on BNT G8264 and ESXi 5.5

I have a BNT (now an IBM) RackSwitch G8264 and am having problems trying to get standard VLANs configured and working with my two ESXi 5.5 hosts. I've followed the documentation (which can be found ...
2
votes
4answers
139 views

Can one server see traffic to another server inside a VLAN?

Scenario: I have a rack of servers that all belong to the same private VLAN. I transfer data from Server 1 to Server 2. Is it possible for any of the other servers to sniff out the data sent or is ...