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

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2
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1answer
110 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
1answer
317 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
28 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
229 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 ...
1
vote
1answer
165 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
1answer
220 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
1answer
105 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
1k 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
443 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
1answer
56 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
247 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
86 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
47 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
80 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
225 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
1answer
215 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
2k 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
280 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 ...
1
vote
2answers
4k 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
2k 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
1answer
156 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
427 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
1k 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
2answers
165 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
40 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
112 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
148 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
717 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
149 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
695 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
709 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
206 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
218 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
1k 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
323 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
163 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
60 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
2k 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
364 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 ...
1
vote
1answer
3k views

Private VLANs/Port Isolation on HP ProCurve 2524

I am trying to set up Private VLANs (as described on Wikipedia) on a HP ProCurve 2524, but I can't find any references to it in the online manual. Searching the internet hasn't yielded much either ...
0
votes
2answers
2k views

VLAN Tagging Traffic on Cisco Switch

I have a situation where I'm setting up multiple VLANS on a pfSense firewall on the same physical interface for a client. So in pfSense, I now have VLAN 100 (employees) and VLAN 200 (students - ...
2
votes
1answer
445 views

Trunking between Juniper Ex3300 with Cisco Router

Hy Experts, Please tell how to create trunking with Juniper and Cisco. Cisco 2950 > Juniper EX3300 > Cisco 2621 I create VLAN 100,VLAN 200, VLAN 300 I have create trunk on juniper switch with : set ...
0
votes
1answer
2k views

Voice VLAN Configuration on Cisco SG300

We currently have a single Cisco SG300 switch on our data network. We are introducing a hosted VoIP system. As such we will be installing a second Cisco SG300 (to account for growth and new phones) ...
2
votes
1answer
281 views

Tagged Packets on native VLAN General Port

Scenario a) I have a Switchport (g1) in General-Mode. Say g1 is member of VLAN1 (native, untagged) and VLAN2 (tagged). Another Port (g2) is in Trunk-Mode, and member of VLAN1 and VLAN2 If i send a ...
0
votes
0answers
996 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 ...
-1
votes
1answer
107 views

VLAN IP assigning [closed]

In an Esxi 5.0 server, we have a standard switch created with an ip range of 172.25.17.32-172.25.17.63 with subnet mask of 27. I have created some virtual machines in that host. Now I need to map ...
2
votes
2answers
1k views

Is it possible to configure a private VLAN on a switch and still access each server via a public IP?

I'm sure this is a very basic/common networking problem. I have 1 web server and 2 database servers that are co-located in a data-center. I have been issued 10 public IP addresses and I have a 10 port ...
0
votes
1answer
164 views

802.1q Trunk Ports to Server - Drawbacks?

So I know that I can configure my switch to trunk a port and tag/untag packets from my Windows and UNIX servers using functionality provided by the NIC. My question is, what are all the downsides of ...
0
votes
0answers
272 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 ...
0
votes
2answers
1k views

Cisco switch VLANing based on MAC address

Is it possible (or advisable) to tell a Cisco switch to VLAN based on MAC address? If so, how? I know it can be done on a port-by-port basis, but I'd like more granularity than that. We're using ...