Questions tagged [bridge]
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.
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kvm network bridge on centos 6
I have a Centos 6 KVM host. I installed the KVM following this manual:
https://wiki.centos.org/HowTos/KVM
Its network has been configured as a bridge:
[root@server ~]# ifconfig
br0 Link encap:...
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Bridged VirtualBox VM with individual IP
On Debian hosts I run VirtualBox VM mainly to run WinX software. Some of these VM shall join AD and as such need fixed IP and shall be reachable from the LAN, i.e. NAT is no option.
I considered ...
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iptables setup for bridge, redirect dns traffic
I am trying to forward dns traffic on a bridge to a local dns server and it wasn't working. As a thought exercise I decided to block all traffic and that too isn't working. Here is my setup :
#/etc/...
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Windows network bridge: STP parameters [closed]
I recently discovered Windows 7 does support STP upon it's own Ethernet bridges.
https://reggle.wordpress.com/2011/09/03/hidden-feature-in-windows-7-spanning-tree/
Although the feature is barely ...
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Bridge server for connecting two databases?
I'm in a bit of a pickle.
I currently have 2 database servers.
One is hosted in the US and is online on the internet.
The other is local, working only on LAN and external connections are not allowed.
...
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ensure "switch redundancy" on a network
I'm struggling in connecting two Windows 7 PCs (each with a 2 port Intel NIC) via two complete redundant paths. And I want to make it transparent to the services on that system. I was thinking on ...
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VPN bridge duplicate routes
I'm trying to establish a VPN bridge between 2 embedded computers. VPN gets established correctly, however once tap0 interface gets created on the client's side, it creates a duplicate route:
192.168....
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IP conflict on a KVM bridge network connection
We're running a CentOS 7 server, with KVM installed on top of it, and the host has 2 Ethernet interfaces attached to it (em1 and em2).
A new windows 7 VM was just created, and we wanted that specific ...
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pfsense NAT router - "live with" double nat (airport express)
I have a setup that have worked for years with a fiber to a NAT router to clients. Clients are typically cheap NAT routers of any kind.
Setup like this
Fiber from ISP
|
Router, pfsense
-WAN - x.x.x....
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Routing issues with bonded VLAN trunk bridged to Xen dom0 on CentOS
I am setting up a new dom0 which has a LACP bond. Connectivity is fine between the network, dom0 and domU's without the trunk enabled.
Once I start tagging traffic on the switch and add the ...
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ganeti network: change bridge name
I try to add an instance to network, first first I need to connect the network to a bridge. I'm using bridge vbr0 instead of standard xen-br0, gnt-cluster info shows that ganeti has the default set ...
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How to route traffic between 2 VLANs on different subnet
I have the following problem:
I have one interface eth0 with IP 172.20.51.61/24
I have configured 2 VLANS on the same machine:
eth0.120 : 172.20.52.61/24
eth0.200 : 172.20.54.61/24
I also have a ...
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OpenVPN Bridged client can't see rest of subnet
I've got an OpenVPN setup using bridging mode, as I need both clients and computers on the network to be on the same subnet.
My server has eth0 and tap0 bridged into br0. The server can ping both ...
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Ipv6 over bridged network stops working after some time (Ubuntu LXC)
i hope you can help me. I am running several Linux Containers on a bare metal server which is provided with an Global Ipv6 address as well as an 64-bit network by my provider.
I have configured IPv6 ...
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DSL modem in bridge mode but router not accessible from the internet
I have a DLink ADSL modem which I have put into bridge mode and connected to a Fortigate 200A firewall. The Fortigate is able to connect through PPPoE and receives the static public IP. I can browse ...
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Add a network bridge to Ubuntu and lost internet and lan connection
I'm trying to make network bridging to work on a Ubuntu 15.04 (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 ...
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How can I bridge an HTTP server from an interface to another in Linux?
In a Linux server I have an HTTP server that's available at eth1 with ip1, and I want to make it available to the network in eth2 with ip2. How can I do this?
Example: I have an http server on 192....
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Is there any disadvantage to putting a modem in bridge mode
In order to prevent the need of port forwarding and double natting I plan to put a modem into bridge mode. Are there any side effects or problems that could come of placing a modem into bridge mode in ...
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Creating several kvm bridges over tagged bond
I have the following configuration in a RHEL6.5 which works great.
# ifcfg-em1_2
DEVICE=em1_2
HWADDR=C8:1F:66:D8:77:D2
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=no
MASTER=bond0
SLAVE=yes
USERCTL=no
#...
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VMWare ESXI vNetworking - vSwitches bridged by multiple multiple Layer 2 bridge hosts
I want to create a multi-VM pfsense cluster ESXI. For those that are not familiar with pfsense, consider it a Free BSD based router/switch (with many features on top of it, but not necessary for this ...
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Setting up site-to-site IPsec in bridged mode
I'd like to set up site-to-site IPsec in bridged mode: that is, where the hosts in each site don't need to be modified to use the IPsec gateway, but the IPsec gateway acts as a pseudowire.
My plan to ...
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Linux Routing with two NICs (LAN vs Internet) with NAT and bridging for VMs
My Setup:
There is only one physical machine in this setup, a Host System for Virtual Machines (VMs) with two network adapters.
One NIC (eth0) is connected to an internal network (LAN subnet, e.g. ...
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Make LXC containers directly accessable with ipv6
First off I have a special IPv6 address allocated to my dedicated server, just 1. A ::1/128 one. But I can assign addresses to eth0 (eg ::2/128, ::3/128, etc).
Now I would like to run LXC containers ...
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CentOS 6 ELRepo kernel bridge issues
I'm currently running the following Kernel on CentOS 6.6 from ELRepo
[root@de14 ~]# uname -r
4.0.4-1.el6.elrepo.x86_64
Anything related to a bridge doesn't work, what I've come to understand is ...
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Routing from docker containers using a different physical network interface and default gateway
Background Information
I have a server with two network interfaces that is running Docker. Docker, like some virtualization tools, creates a Linux bridge interface called docker0. This interface is ...
user81598
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Connecting a switch to a VDSL2 model causes upload speeds to go to 0
My network configuration has my main router connected to a secondary router which is in bridge mode, and I have a computer connected via ethernet to that secondary router.
If the connection between ...
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How to configure bridging
I am trying to configure a bridged network in a CentOS machine created with virtual box. I already did the same on two ubuntu 12.04 machines, and this is how the /etc/network/interfaces file looks ...
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cannot ping linux network namespace within the same subnet
Here is a quick summary of the issue. I cannot communicate with a linux network namespace within the same subnet. I am running Ubuntu 14.04.1 LTS on a headless server. I have been troubleshooting this ...
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Tcpdump/Iptables on bridge interface without assigned IP address
I have set up a bridge interface without an ip on it.
$ brctl addbr br0
$ brctl addif tap0
$ brctl addif tap1
$ ifconfig br0 up
As seen above, this bridge is connecting 2 TAP interfaces setup ...
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docker0 bridge status toggles between enabled/disabled, what could be causing that?
I have some CoreOS bare metal instances that are displaying unusual behaviour on the docker0 bridge device.
On one of the instances where this has been occurring, I'm running couchbase server and it ...
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pfsense with 4 WAN IP and outgoing NAT
I have a pfsense with a single wan ip, i want to assign multiple wan ip's. The pfsense machine is located on a vm machine with the other servers i wish to NAT forward. I want to give each server a wan ...
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Trouble understanding how to setup network Bridge on Ubuntu 14.04.2 to act as a web content filter
I am trying to build an Ubuntu server to act as a web content filter, using Squidguard and Dansguardian. There are great resources such as this:
https://help.nceas.ucsb.edu/...
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openbsd pf squid transparent proxy using a bridge
I want to use OpenBSD 5.7 as a filtering bridge in front of my router, and as part of that run a transparent proxy (squid 3.5.1) to manage web access. I have set up the openbsd machine as a bridge, ...
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Xen: network between dom0 and domU does not working, while network between particular domUs does
I am unable to establish communication between domU and dom0. I have two domUs and they are able communicate between each other. Dom0 is connected to Internet. I just need network between dom0 and ...
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Unable to set a bridge over bonding on Debian
I have a Debian 8 Jessie machine with two interfaces (eth0 and eth1) bonded in balance-rr mode (aka 0). It works smoothly, but when I try to set up a bridge on it, it doesn't work.
My /etc/network/...
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Add a second bridge to a virtual machine [closed]
We have a ubuntu-12.04 host running another ubuntu-12.04 virtual machine with kvm virtualization and bridged network interface on eth4. This network allows the virtual machine access to the outside ...
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How to setup 2 switch with VLAN and 2 IPs for each in different block
Below I have depicted the required network. In this network:
Lets say GW1 is in IP1 block and GW2 is in IP2 block.
There are 2 Linux running PCs with 4 NICs.
1st Linux PC is connected to 2 GWs with ...
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Problems simulating bridge with OpenWRT virtualbox
I have setup a BarrierBreaker OpenWRT instance in virtualbox.
WAN is NAT adapter
LAN is internal network
I have attempted to bridge these interfaces as I wish to start learning ebtables. However ...
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Why must the IP be configured on the bridge device? [closed]
My understanding of a network bridge is having a kind of "virtual switch" which virtually connects the network devices (that were added to the bridge) as if I would connect them to a real switch with ...
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How do I connect a SoftEther bridge to a server without getting an authentication error?
I've been playing around with SoftEther, and I'm trying to use the VPNCMD utility to create a site to site VPN. However, when I try to get the Cascade connection up between the bridge and the server, ...
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Bridge on vlan on teaming for KVM
I have problem to create bridge on vlan on teaming.
Why I do something like that?
- Kvm needs bridge
- Vlans because I need vm’s in different subnets
- Teaming in option active-backup (small HA)
I do ...
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Trunk vlans inside openvz container (Proxmox)
I have a node running OpenVZ CT (ProxMox). eth1 on HN are bridged through vmbr1 to veth device on CT101 (eth1 inside container).
(Host Node) eth1 -> vmbr1 <- veth101.1 <- eth1 (CT101)
No VLANs,...
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Xen VM won't come up: could not find bridge device xenbr0 (configured to use routed)
I am using xen 4.4.1 on an Ubuntu 14.04 server, my DomU is running Ubuntu 14.04 Server as well. I've run this DomU in bridge-mode previously no problems. However I want to switch to a routed setup.
I ...
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Debian Linux Bridge Mode not forwarding
I am trying to bridge LAN adaptor eth0 with the eth1 interface exposed by sierra wireless LTE modem.
When I create a bridge using the following commands:
brctl addbr br0
brctl addif br0 eth0 eth1
...
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Amazon EC2: OpenVPN server won't route bridged packets from client to VPC subnet
I have a bridged OpenVPN setup on a Linux server in an Amazon EC2 VPC. (Spent hours on docs, reading similar problems, here, openVPN forums, no luck yet.)
The bridged interface is up and contains ...
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Bridge interfaces without IP in Debian
I need to bridge 2 VLAN's on some different interfaces without IP address.
How i can do this?
auto eth4
iface eth4 inet manual
up ifconfig eth4 up
mtu 9000
auto eth4.1320
iface eth4....
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Is there a way to query all the mac addresses in a network?
I know this question was flagged "off-topic" and "non-professional", but when creating a gateway or IDS, this might be quite relevant. Also, Google finds nothing usable...
There is a thing called ...
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Qemu Proxmox VM - Network access to guests for BackupPC backups
Environment
I rent a dedicated server from OVH and installed Proxmox 3.3 (which is based on Debian 6 Wheezy) in order to create and manage multiple Virtual Machines on it.
Each VM is configured to ...
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What does the @ means in ip link show command?
I am new to Linux network admin. I was learning the ip commands with one of my colleague's server with ip link command.
When I try to show to one of the vlan information, I see this:
vlan1@eth1: <...
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STP fixes non-looped network. Dumb switches kill network. Can anyone decipher this wireshark readout for me?
Greets long story short we had a power outage here and when the network came back online it would crash out to a flood of ARP requests.
This would lead to packet storm/network loop, but after ...
