Bridging is a forwarding technique used in packet-switched computer networks. Unlike routing, bridging makes no assumptions about where in a network a particular address is located.
0
votes
1answer
134 views
lxc vm access outside the host
On Debian 64bit, I configured a lxc like this :
host ip : 172.16.0.25
vm guest on this host : 172.16.0.44
I've done the bridge on my host
auto eth0
iface eth0 inet manual
up ...
2
votes
1answer
143 views
eth0 on lxc does not work
I am facing some problems that the eth0 on lxc container does not work. I already tried
Bridging LXC containers to host eth0 so they can have a public IP, but it does not help.
On my host (Ubuntu on ...
1
vote
1answer
158 views
Static route without knowing the nexthop (linux)
I have an eth3 interface in a linux router, with an adsl modem. This adsl modem is in bridged mode, so the public IP is assigned to eth3 (say 11.22.33.44), and the modem is just not seen by my server.
...
0
votes
1answer
421 views
bridging two network interfaces in ubuntu linux 12.10 AND being able to access it from that machine
Ok, i have about had it but heres the deal.
I have 7 total machines connected like this:
[5 workstations]<--->ServerPC<---->MAINPC<---->router
FYI, dont worry about the workstations they ...
0
votes
1answer
84 views
KVM guest has a wrong outgoing ip address
I have a KVM host with a bridge configured on eth0 that has a public ip:
auto br0
iface br0 inet static
address xx.xx.aa.111
netmask 255.255.255.0
network xx.xx.aa.0
broadcast xx.xx.aa.255
...
0
votes
3answers
100 views
Connet to internet through DC with 2 network interfaces
I have a network like this :
Client 1 <== Wireless ==> Access Point <== Wire ==> DC <== Wireless ==> ADSL Modem
Client 1 :
IP : 192.168.1.181
DG : 192.168.1.100
DNS : ...
2
votes
1answer
104 views
Is it secure to expose LAN to bridged DSL modem?
I connected my router and DSL Router (in bridged mode) together like this:
(click for full image)
Strange setup, I know. :) The reason was I wanted my DSL router to continue to work as a switch and ...
0
votes
0answers
42 views
server with bonded NIC connected to wireless bridge causes network connectivity issues
I've have a wireless bridge (tew640mb) that connects to a wireless router. If I connect a machine with one NIC into a port on the bridge, the network connection is fine. If I connect a machine (with ...
2
votes
1answer
170 views
Assign public and private IP addresses for a KVM guest
I would like to create a KVM guest with two different IPs, like one public IP and another private IP for the same KVM guest.
My host is 210.x.x.x. Series and Guest are also configured with the ...
8
votes
2answers
650 views
Jumbo frames between KVM guest and host?
I am trying to implement a 9000 byte MTU for storage communication between KVM guests and the host system. The host has a bridge (br1) with a 9000 byte MTU:
host# ip link show br1
8: br1: ...
1
vote
1answer
67 views
Bridging Networks Between Buildings
I'm trying to set up a WiFi link between two buildings. On one side I've got a regular SoHo (network A) router (Linksys EA4500) and on the other side I've got an Alfa AWUS036H (network B) connected ...
1
vote
1answer
507 views
KVM is NOT seeing multiple bridges (only macvtap devices)
I am in the process of doing some thesis research about using ebtables and iptables on a KVM host to perform on-the-fly firewall restrictions to KVM guest VM's.
Here is the problem:
I have a bridge ...
0
votes
0answers
46 views
STP on a bridge
I have set up a bridge on an interface em1 and connected 4 vms to the bridge. I disabled stp on the bridge. There is no chance of looping as there is only one bridge in this setup, there occurs a BPDU ...
0
votes
1answer
163 views
Xen: can't get Dom0 and the DomUs to ping eachother
We have installed a Xen (4.1) configuration and can't get Dom0 and the DomUs to communicate (ping eachother). The DomUs are able to ping eachother but not Dom0, and Dom0 cannot ping the DomUs.
We ...
0
votes
1answer
726 views
Use one NIC to create multiple interfaces for Linux KVM
I am working on a thesis research project, and I am having some difficulty figuring out how to make one NIC spawn several "bridge" interfaces such that each KVM VM can be seen on the local network. I ...
0
votes
0answers
67 views
Why do peers at a bridge stop replying to ARPs after massive rsync traffic?
Ok, this is a weird problem I had when pushing data to my server. I shall explain the surroundings a bit, as I'm entirely unsure where the problem can be (I hope this is not off topic, but it ...
1
vote
0answers
192 views
VirtualBox - multiple guests, each with a single bridged adapter?
I am running a dedicated server (located at Hetzner, Germany) that runs VirtualBox in order to virtualize several services accross multiple virtual guests. Those guests are supposed
to communicate ...
0
votes
1answer
167 views
Can't get network bridging to work
I'm trying to make network bridging to work on a Debian squeeze (I'm experimenting in order to make a QEMU/KVM virtual machine that will be visible to the outside network as if it were a distinct ...
0
votes
1answer
147 views
Martian source in log of machine1 after ssh-DNAT to virtual machine located on machine2 (machine1 and machine2 xover connected)
My scenario
2 physical machines, each with 2 network interfaces (eth0, eth1).
they act as virtual machine host
for one machine alone, the networking works with no problems
first i had two ...
1
vote
1answer
104 views
networking with one NIC and access to internet and virtual machines
I have installed opennebula and I have followed this tutorial.
Unfortunately I cannot ssh to the virtual machines that appear to be in a running state and already have an IP.
The problem might be that ...
0
votes
0answers
143 views
Vyatta VC6.5 GRE tunnel bridge with Key parameter
I am trying to create a simple GRE bridge endpoint for a few remote sites to use as a central landing point.
I need to use L2 GRE tunnels, with a Key component, as the CPE I am using remotely only ...
2
votes
2answers
299 views
Bridge NICs with automatic pass-through
I am looking at using a computer with a dual-NIC card (one with two NIC ports) as an in-line traffic shaper / URL filter / traffic analyzer, etc. (probably using pfSense), but I am concerned that if ...
0
votes
0answers
116 views
How to create a VPN bridge connections to Azure VM [closed]
Can I create a VPN bridge to my Azure VM from my IPSec router? If so, how?
3
votes
2answers
2k views
Bridging LXC containers to host eth0 so they can have a public IP
UPDATE:
I found the solution there:
http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge#No_traffic_gets_trough_.28except_ARP_and_STP.29
# cd /proc/sys/net/bridge
# ls
...
1
vote
2answers
139 views
Is there a way to create virtual network between vm on xen with out creating shared bridge with n/w interface
xen 4.1.2 is running with ubuntu 12.04 as dom0.
I need to enable networking between vm only(which means not creating a bridge between Ethernet card and sharing among vm).
when i installed ...
0
votes
1answer
101 views
Connectiong adsl router/modem and router with bridgemode
I have one adsl modem/router which is not "top" of the line and it lack allot of options which I need. I was able to acquire one Cisco router recently which has all options that I need ( like DMZ, ...
-2
votes
1answer
345 views
bridged connection for windows 7 host and ubuntu guest in vmware player [closed]
I installed ubuntu on my laptop in vmware player 5.0.0 build-812388) under windows 7.
I do coding in ubuntu and would like to connect to ubuntu remotely with ssh. From My understanding, I need to use ...
0
votes
3answers
72 views
How to find host of an unidentified VM in a network? [closed]
For example someone have installed server with a DHCP on VM connected to a corporate network breaking its operation, so I have IP of that VM, but how to find out IP of its host system ?
3
votes
1answer
293 views
Network Bridge in dom0 can not ping domU's
I am using Debian wheezy with XEN 4.1. I have two network bridges xenbr0 and xenbr1.
xenbr0 is linked to the real-eth0-nic so the domU's can talk to the outside world, which worked fine.
xenbr1 was ...
0
votes
2answers
78 views
Linux: how to verify my network configuration before doing a restart
I am trying to build a network bridge for my VMs on a server.
So I added a new file and changed another in the /etc/sysconfig/network-scripts directory.
Then I did a network reboot with the ...
2
votes
1answer
116 views
Access to WAN from one VLAN
i want to create a VLAN for 3 guest VMs. I already have it and every VM can ping each other, but the problem is that any guest CAN NOT have access to Internet
Network configuration in Host machine
# ...
0
votes
1answer
155 views
openvpn in a bridge?
I have a somewhat tricky proble to solve.
We have a wireless link between 2 building. One of them has an mikrotik and below there are some vlans. Some machines of one vlan need to use openvpn to ...
0
votes
0answers
22 views
Cisco 350 Bridge vxWorks connecting to IOS
I have 2 bridges one is a Cisco 350 Bridge with vxWorks as a non-root bridge w/o clients and another Cisco 350 Bridge running IOS set as Root Bridge. It seems no matter what configuration I can't ...
0
votes
1answer
301 views
KVM with external IP without NAT?
I have a CentOS 6.3 server with 1 NIC (eth0) and an external IP (lets say 1.2.3.4). On this server I'm running a CentOS 5.6 KVM with the "default settings" (virbr0 on 192.168.122.x).
What I want to ...
0
votes
1answer
737 views
Cisco 877 as PPPoA/PPPoE bridge (no routing) - how to make it listen to IP for management?
I have a Cisco 877 configured to bridge ADSL with PPPoA to PPPoE on Vlan1. This works fine, but in this mode the only way I can configure the Cisco is via the serial console. I'd like to have the ...
1
vote
1answer
162 views
Connect ADSL modem SMC7904WBRA-N to CISCO RV082
I have a SMC7904WBRA-N ADSL modem/router that connects to the internet with a static IP given by the provider.
I've received a RV082 to create a VPN connection which is having problems to connect to ...
5
votes
3answers
188 views
Creating a network link between 2 very close buildings
I have a charity who have two adjacent medium sized modern detached houses (in the UK): the buildings stand next to each other and are less than 5 metres apart. They have DSL connected to a single ...
1
vote
1answer
277 views
Openstack - Connectivity between instances on 2 separate nodes
I have the following setup:
1 x Management Node (node A)
2 x Compute Nodes (node B & C)
1 x Volume Node (node D)
Relevant configurations:
VlanManager
multi_host=true
Node ...
2
votes
1answer
127 views
bridging real and virtual wireless network interfaces
I have 2 wireless interfaces, one real (eth1) and one virtual (vt0), running on top of the same physical wireless adapter. Both have separate IP address spaces.
eth1 is connected to a laptop, and vt0 ...
2
votes
1answer
66 views
how to block access from bridge mode vpn nodes to my wan gateway
We have a tap bridge between 2 local networks. It work great except that clients from the 'other' network can use dhcp server and most important can use wan gateway of the second network which is bad. ...
1
vote
1answer
887 views
Centos/OVH: public IP on KVM virtual machine
Since a few days, I'm trying to configure my KVM vm to have a public IP address, without any success.
First, I'm on OVH, and you need to know they don't allow networking from different mac addresses. ...
0
votes
1answer
443 views
Linux bridge (brctl) dosnt forward IP packet when router is one of the bridge endpoints
I have setup a brctl bridge on Ubuntu with the following deployment:
Cisco router -> Linux bridge -> client computer
The bridge forward the following packets types: ARP,STP, but doesn't ...
2
votes
2answers
695 views
Cannot access LAN Printer
Environment:
I have a Brother 7360N Network Printer connected to a TPLINK Router over an Ethernet cable.
My desktop, running Windows 8 is connected to the TPLINK Router over an Ethernet cable. A ...
0
votes
0answers
111 views
Bridging SVI and FastEthernet ports on 1800 series fixed ISR
I have several 1800 series fixed configuration ISRs with 8 port switches and FastEthernet ports. When I try bridging them by adding the SVI (vlan interface) and the FastEthernet ports to a ...
1
vote
0answers
444 views
openstack, bridging, netfilter and dnat
In a recent upgrade (from Openstack Diablo on Ubuntu Lucid to Openstack Essex on Ubuntu Precise), we found that DNS packets were frequently (almost always) dropped on the bridge interface (br100). ...
3
votes
1answer
67 views
Server ethernet bridging, fail-safe [closed]
Is there server hardware available with two ethernet ports, that can turn into a fail-safe bridge when offline?
My use example is a server that does filtering and traffic monitoring on an ethernet ...
0
votes
1answer
192 views
Debian bridged network between virtual machines
I installed two linux containers (lxc) in a debian squeeze server so the environment is as follows:
Physical server: 192.168.2.200
Linux container 1: 192.168.2.201
Linux container 2: 192.168.2.202
...
3
votes
2answers
1k views
Debian: Should I add vlan interface into bridge for KVM?
I am setting up a Debian Squeeze box as a KVM host. I want to add multiple interfaces to each KVM guest so I want them to be on different VLANs.
After reading about this, I believe the best method is ...
1
vote
0answers
215 views
Virtual bridged networking with VLAN, could not ping
I require a virtual network with VLAN be build between two virtual hosts - which can be (lxc/ vbox -ubuntu or win xp).
I tried with lxc and vbox with Ubuntu and was finding difficult to make it work ...
0
votes
2answers
159 views
Ubuntu with KVM guest VM and broken bridges
I have an Ubuntu box with a KVM guest VM running. They use bridging so the guest VM attaches to the physical network of its host. The guest VM has 2 NICs in 2 different bridges.
First NIC of the VM ...
