Group of hosts with a common set of requirements connected as if on the same broadcast domain despite physical location
0
votes
2answers
84 views
+50
How can I connect a VPN and VLAN via a Cisco ASA?
I'm trying to extend a VPN further into an organisation:
At the main location I have a private network (call it 192.168.0.0/24) which is connected via a Cisco ASA 5510 to a Draytek ADSL router. The ...
0
votes
1answer
26 views
how to receive MAC multicast packets based on VLAN interface?
can any one pls help me in the following question.
Background : Two PC's(PC1 n PC2) with two VLAN interfaces in each (eth0.2 and eth0.3) respectively.The PC's are connected by WRT54GL router in ...
0
votes
1answer
16 views
Create non-vlan interface with vlan-interface type name
I have 2 interfaces: bond0 and bond1.
bond0 is connected to a trunking port, i.e. will be assigned vlans like bond0.10
bond1 is connected to a static port for vlan 20. So as far as connectivity goes, ...
2
votes
0answers
35 views
OpenWrt Configuring Tagged and Untagged VLAN on the Same Port
I have installed OpenWrt on a MikroTik Routerboard RB750UP (AR7240 CPU with AR9330 built in switch). I have included additional details below, but my question is:
How do I configure an untagged and ...
2
votes
2answers
68 views
VLAN & Communication
I'm working on a project regarding Network Security and I've come to the topic regarding VLANs.
I was wondering if it is possible to set up multiple VLANs (VLAN0, 10, 20, 30) in a way that all VLANs ...
1
vote
3answers
83 views
iptables: match only untagged traffic on an interface with VLANs
As far as i know, there is no way of distinguishing VLAN traffic in iptables on the master interface (that is the interface to which virtual VLAN interfaces are added with vconfig or ip link add link; ...
0
votes
1answer
708 views
Setup Cisco RVS4000 QOS for VOIP
Just switched from dedicated T1's with analog phone lines to cable modem with 10/2 uplink. We're having some VOIP call quality issues on the outgoing side when bandwidth is stressed and I need to ...
0
votes
0answers
30 views
Switch Linksys DHCP offering lease without sucess
I have a Linksys switch srw224g4 with 4 vLans. It´s connect to my router MIkrotik RB450G.
The VLANs work fine, when I plug my notebook with Win7 to any port, it gets the correct IP and everything ...
0
votes
1answer
26 views
Isolating Internet-accessible internal hosts from each other
I'm a sysadmin in a small company, and have what I would describe as a moderate understanding of networking. I'm trying to create a situation in which a number of internal hosts are accessible over ...
0
votes
1answer
731 views
routing through multiple subinterfaces in debian
my question is as simple as the title, i have a debian 6 , 2 NICs, 3 different subnets in a single interface, just like this:
auto eth0
iface eth0 inet static
address 192.168.106.254
...
0
votes
0answers
24 views
ASA 5505 Dedicate WAN Route to Voice Vlan
I've Got multiple WAN connections currently and I plan on moving towards a Active/standby Configuration in the near future, I have two asa 5505's with SecPlus licenses, the device is currently ...
0
votes
1answer
729 views
InterVLAN routing on a HP V1910 series switch
Recently bought a HP V1910-16G switch (former 3com 29хх) with IPv4 routing capabilities. After unpacking I did a firmware upgrade to the latest 5.20 Release 1513P06. I did set up additional VLANs (#2 ...
0
votes
2answers
798 views
VLANs on ubuntu
I just wanted to learn how VLANs work.That's why thought of setting up on couple of ubuntu machines, which was not working.I think so i have some wrong understandings about VLAN.Please correct me ...
2
votes
1answer
1k views
Configuring Sonicwall to route VLAN traffic to internet
I have a Sonicwall NSA 2400 that had its configuration reset and I'm having trouble reconfiguring it.
The Sonicwall's WAN port (X1) connects to the internet. Its LAN port (X0) connects to a 3Com ...
1
vote
2answers
46 views
How do I route an external IP address to a internal one, from two different VLAN's? [D-link DGS-3324SR]
(Apologies in advance for not being an network savvy guy)
I have four VLAN's configured on a 24 port D-link DGS-3324SR. Each VLAN has 6 ports.
The first VLAN has a connection to a modem providing 16 ...
1
vote
0answers
77 views
OpenWrt on TL-WR1043ND - VLAN to VLAN communication
I have this network configuration at home:
3G Wifi router - for access to internet, 192.168.1.0 subnet
Router TP-Link TL-WR1043ND - OpenWRT (12.09), 192.168.2.0 subnet, connected wirelessly via ...
1
vote
1answer
44 views
How to split LAN into two separate LANs using same internet connection
I have a router ZyXEL P-660HN-T3A and Switch ZyXEL GS1100-24 and I need to separate 2 ports on switch so clients connected to this ports can't see/access the others. I need the same thing to do with ...
1
vote
2answers
193 views
vconfig not tagging outgoing packets with vlan tag (Ubuntu)
I am trying to experiment with a vlan interface on my desktop ubuntu machine. The desktop has only one single interface (eth0) connected to the company LAN. After using vconfig to create the vlan ...
1
vote
1answer
585 views
Ping between VLANs - DD-WRT
I have a Linksys WRT54G2 v1.0 router running DD-WRT build 13064. I currently have each switch port on a separate VLAN, for example:
Port 1: IP - 172.16.32.0/19 - VLAN2
Port 2: IP - 172.16.64.0/19 - ...
-2
votes
1answer
45 views
Cisco Switch VLAN vs ACL [closed]
I am trying to create a VLAN in which my PS3 can access a remote PC that feeds it video. I want my PS3 not to be able to communicate to the internet, and be able to move that remote PC into the same ...
0
votes
2answers
31 views
Separate WebBlocker settings, using one Watchguard XTM 505?
I support a school with 3 locations that uses a Watchguard XTM 505. They are implementing a BYOD wireless solution with Aerohive APs, and they will have 3 SSIDs (School, Guest, BYOD).
Each SSID needs ...
0
votes
1answer
853 views
arp -n responds with (incomplete) on the wrong subnet, can't remove it
context
There are 2 servers:
server1 - eth0 10.129.76.16
eth0.2 192.168.0.103
server2 - eth0 10.129.79.1
eth0.2 192.168.62.101
The 192.x.x.x addresses are connected to the ...
-2
votes
2answers
59 views
Linux Bridge allowing TCP but not UDP
I am using a linux bridge for monitoring some traffic on two vlans. I created two bridges br30 et br40 for each. My problem is that the TCP traffic make it through but not the UDP one. I thought of ...
8
votes
3answers
921 views
tc u32 — how to match L2 protocols in recent kernels?
I have a nice shaper, with hashed filtering, built at a linux bridge. In short, br0 connects external and internal physical interfaces, VLAN tagged packets are bridged "transparently" (I mean, no VLAN ...
0
votes
0answers
16 views
add VLAN on XenCenter 6.1
I'm installing XenCenter 6.1 on HP Blade server BL460G7, boot from SAN.
I assign ip to static, but i can't find where i can set vlan on Xencenter.
I can't ping anywhere else beside the ip it self. I ...
2
votes
3answers
2k views
How do I segregate two VLANs from each other while allowing both to communicate with a third VLAN?
Preface: I'm not a network or systems administrator. I have a little bit of networking experience, but it's limited to basic router configuration like port forwarding, setting alternate DNS servers, ...
1
vote
2answers
101 views
VLAN Traffic changing source when captured at firewall
1) HP Switch config below
2) Fortinet Policy in attached image
Right now, we are a flat network of roughly 320 wireless devices, and about 100 wired devices. We have a FortiGate 300C firewall with a ...
1
vote
1answer
56 views
VLAN over three switches
We are connecting three offices via fiber optics. For each office we have one switch. In each office there will be one PC which has to be isolated in a VLAN A. There will be other PCs but those three ...
1
vote
0answers
77 views
debian KVM - network bonding fails with vlan and bridge
i have a Debian 6 system configured with 2 NICs
these NICs are used on a bond (bond0) which is used by bridge that require to use VLAN.
i can get connection between guests running on VLAN10 but it ...
0
votes
1answer
64 views
What do I do with the default VLAN 1 on a 3Com 4210?
I am a bit confused as to how to use the default VLAN on a 3Com 4210.
The switch is configured out of the box with all ports on a default VLAN 1. I need 4 VLANs on this switch:
100 - Internal WIFI
...
0
votes
0answers
45 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
0answers
95 views
Ghost “vlan 0” tags added to ethernet frames in CentOS guest under OpenStack
I'm trying to debug an issue involving a KVM virtual machine instance where the instance doesn't respond to network requests when the source is on another physical machine, which is on the same subnet ...
-1
votes
1answer
88 views
Routing between Vlans on layer 2 switch and Cisco router [closed]
Hi I'm quite new to networking and need some help with a home configuration...
I have an 8 port TP-Link SG3210 layer 2 802.1Q tag capable switch and a Cisco 1801 router.
I set up 3 Vlans on the ...
2
votes
1answer
189 views
Configuring trunk interface in Cisco 3750 switch to allow multiple Vlans connected with Ubuntu servers having a single NIC (sub-interfaced)
I have 3 Ubuntu servers (each having only 1 NIC) for my openstack cluster configuration following the guide of http://docwiki.cisco.com/wiki/Cisco_OpenStack_Edition:_Folsom_Manual_Install
I also have ...
0
votes
1answer
294 views
Switch sending DHCP packets to wrong VLAN
I have a basic remote site with a Cisco Catalyst 2924XL switch. There are 2 VLAN's at the site:
1 Default
2 Wireless
There is a single server connected via a single ethernet cable, VLAN 1 is ...
1
vote
1answer
84 views
Isolating Ethernet ports on a Cisco Nexus 5000
We have several machines plugged into various ports on a Cisco Nexus 5000. We want to separate the switch into groups, so a handful of machines can see and talk to each other and no one else. So, to ...
0
votes
0answers
28 views
Is it possible to set up a management VLAN on HP switches without configuring routes on the WAN routers?
The network I help manage/maintain is configured like so:
Location A - 10.0.0.0/22<br />
Location B - 10.0.4.0/22<br />
Location C - 10.0.8.0/22<br />
etc.
Our ISP owns and ...
1
vote
1answer
97 views
Default Gateway in a VLAN
Could I have a router/firewall device providing WAN connectivity, part of a VLAN on a switch?
For example:
2, L3 Switches. 2 VLANs
DefaultVLAN 10.1.1.0/24
VLAN100 192.168.1.0/24
Two ...
1
vote
1answer
86 views
VLAN Gateways and Routing
This for hypothetical purposes - more of a learning question than an production question.
If I have switch (Layer 3, lets say a Procurve) with a handful of VLAN's configured. Lets say:
DEFAULT VLAN ...
1
vote
0answers
26 views
ASA 5505 base license and Voice vlan [duplicate]
My current setup contains a cisco asa 5505 with two cisco sf300-24p switches, the data and voice vlans have been setup on the switches and I've started to setup the needed vlans on the ASA, but it ...
0
votes
2answers
60 views
Placing WAN Subnet on a VLAN?
I have several hosts I want to connect directly to my WAN subnet, eg., 1.1.1.1/29 (web, mail, and router for LAN).
I have a web managed switch (DGS-1210-24), and was wondering if there were any ...
0
votes
2answers
67 views
Can I use a software router to filter traffic coming from a Cisco router?
I have the following topology working but i would like to be able to filter the traffic using a software router such as Zentyal.
Current
[INTERNET] === [Cisco 2600] ===[Cisco Switch] === [Machines]
...
2
votes
2answers
142 views
VmwareESXi Vlans, Cisco devices and broadcast making the things odd
I'm having problem for some days trying to make a correct configuration
Right now I have a Cisco Catalyst switch, a Cisco Router 2811 and a VMware ESXi node with 4-8 VM (Linux,BSD, Windows), each ...
2
votes
2answers
199 views
Should I add a layer 3 core switch or just use the router I have
I just started as the network admin at this company a month ago and inherited this infrastructure.
(Router should be labeled 2921, not 2920).
Link to see image full size: ...
1
vote
2answers
439 views
2 DHCP servers, VLANs, Mitel 3300, Sonicwall TX 215 conflict
Inherited a system that has likely not been properly maintained for about 10 years. Add to this that the firewall had to be replaced because the original one was not accessible because the former ...
1
vote
1answer
44 views
Setting up untagged VLAN on GE-24F4GBW
I got this old boy of a switch, which has been set up with some vlans.
Everything works great when using tagged VLAN id's, and when using VLAN1 (default).
However, I cannot set the PVID of a port to ...
-1
votes
2answers
76 views
What types of security threats does a vlan protect against? [closed]
I'm learning about vlans. The literature says that they provide improved performance and security by segrating the physical network into separate "virtual" networks.
I understand the performance ...
1
vote
0answers
43 views
VLANS and Public/Private Traffic
I may reveal some ignorance with this question, but I am really confused. We have 3 static IPs and one gateway/modem with my organization. The gateway/modem is located in a remote area of our ...
1
vote
1answer
83 views
Configuring a firewall appliance with 2 VLANs - how are the outbound links on the firewall configured?
We just ordered a sonicwall NSA 4500 firewall and I am preparing a network diagram for its arrival.
We have 12 servers in a newly setup rack, a 48-port switch, and a Sonicwall NSA 4500 firewall
I ...
0
votes
3answers
78 views
Cisco 2900 configuration
I agreed to help a non-profit figure out their network woes. Nothing had been documented and the folks that set the system up aren't available. Wires were cut and left hanging. The organization has ...
