Displaying 20 results from an estimated 3000 matches similar to: "Centos 7 and Network/Bridges"
2009 Apr 01
1
Server with 2 Nics (continuation)
Hi *.*,
This is a continuation on the 2 NICs thread after some more testing.
Just to remember my goal.
---------------------------
I want to create a domU with 2 virtual NICS. One of them will contact
the outside world, the other one will contact a VPN. No reason in
concrete for choosing the bridging protocol, only because its the
default one. I installed the dom0 with the 2 NICs active, with
2015 Nov 12
10
Poor perfmance of bridged interfaces
Hi,
I've created a bridge using 2 interfaces and have a lot of messages as
follows:
nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
address as source address
nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
address as source address
And the operating systems is extremely slow
Interfaces files :
[root at localhost ~]# cat
2016 Oct 04
1
Virtualization Networking
> Date: Monday, October 03, 2016 22:00:07 -0400
> From: TE Dukes <tdukes at palmettoshopper.com>
>
>> From: Gordon Messmer
>> Sent: Monday, October 3, 2016 4:25 PM
>>
>> On 10/03/2016 04:54 AM, TE Dukes wrote:
>> > I can get the guest to access the internet but have tried every
>> > was possible to be able to access the guest from the LAN
2013 Jun 04
3
Centos6.4 routing problem
dear All,
I'm facing this routing problem, the setup is actualy part of ltsp, but
I think this problem is Centos-specific.
The server is a Dell Poweredge R210. The install is standard 6.4, updated.
I have one nic facing the public internet:
vi /etc/sysconfig/network-scripts/ifcfg-em1
DEVICE=em1
BOOTPROTO=none
HWADDR=d4:ae:52:c1:28:2b
NM_CONTROLLED=no
ONBOOT=yes
TYPE=Ethernet
2013 Apr 16
4
2nd NIC troubles
Hi All,
I have 2 NICS in this system. CentOS 6.4
eth0 is the virtual IP from PFSense mapping connected to the router, works
fine.
eth1 is a second NIC that I have assigned a private IP to and connected it
to a switch on the private network. I have many other private devices, so I
know this setup works.
When I connect the cable to the switch and bring up eth1 the system
basically stops taking
2015 Nov 13
3
Poor perfmance of bridged interfaces
2015-11-12 18:07 GMT-03:00 James A. Peltier <jpeltier at sfu.ca>:
> ----- Original Message -----
> | Hi,
> |
> | I've created a bridge using 2 interfaces and have a lot of messages as
> | follows:
> |
> | nov 12 15:30:22 localhost kernel: br0: received packet on enp0s3 with own
> | address as source address
> | nov 12 15:30:22 localhost kernel: br0: received
2011 Sep 11
4
CentOS 6: ethernet "ifconfig up" failure
On my CentOS 6 partition of my laptop:
First note that for this test, NetworkManager is not
running because I did:
chkconfig --del NetworkManager
and then rebooted.
Here is my ifcfg-eth0:
DEVICE="eth0"
NM_CONTROLLED="no"
ONBOOT=no
HWADDR=xx:xx:xx:xx:xx:xx
TYPE=Ethernet
BOOTPROTO=none
IPADDR=192.168.2.5
PREFIX=24
GATEWAY=192.168.2.1
DNS1=192.168.2.1
DNS2=192.168.2.1
2014 May 15
4
Set static IP
Hello,
I want my CentOS 6.5 computer to have a static IP. Currently I get the
IP I want because I have my router assign it on the basis of mac address.
I placed the following file as:
/etc/sysconfig/networking-scripts/eth0
DEVICE="eth0"
BOOTPROTO=static
HWADDR=00:1F:D0:9E:AE:67
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
IPV6INIT=no
PEERDNS=yes
NETMASK=255.255.255.0
IPADDR=192.168.0.99
2013 Oct 28
1
bridged networking using VLAN : guest with 2 NIC
hello all,
I have been trying to set-up bridged network with VLAN and not able to
succeed as many tutorials address only single NIC.
I am trying to setup 2 guests (backtrack instance) each guest has NIC1 and
NIC2. following is snippet for guest1
I am not able to get 192.168.0.2 address back on guest eth0.
VIRT-MANAGER GUI :
guest1-lan details radio button
left side panel
NIC1
2012 Oct 02
2
Weird behaviour of ifcfg scripts
Hi,
I accidentally found that the existence of a file e.g. named
ifcfg-eth1:1 put in /etc/sysconfig/network-scripts/ leads to the
appropriate interface being created even with the option 'ONBOOT' set to
'no':
DEVICE="eth1:1"
BOOTPROTO="static"
NM_CONTROLLED="no"
ONBOOT="no"
TYPE="Ethernet"
IPADDR=12.34.56.78
2011 Jan 13
5
ifcfg-rh: error: Unknown connection type 'Bridge'
CentOS-5.5
# uname -a
Linux inet05.hamilton.harte-lyne.ca 2.6.18-194.32.1.el5 #1 SMP Wed
Jan 5 17:52:25 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
Can anyone tell me why I am seeing these error message?
Specifically, why is TYPE=Bridge giving Unknown connection type
'Bridge'?
Jan 13 08:25:31 inet05 nm-system-settings: Loaded plugin ifcfg-rh:
(c) 2007 - 2008 Red Hat, Inc. To report bugs
2017 Feb 13
2
CentOS 7, systemd, NetworkMangler, oh, my
Gordon Messmer wrote:
> On 02/13/2017 07:35 AM, m.roth at 5-cent.us wrote:
>> Finally, I do an ifdown, followed by an ifup, and everything's
>> wonderful.
>
> What's in /etc/sysconfig/network-scripts/ifcfg-<interface>? Does it say
> NM_CONTROLLED=no?
>
Good catch. No, it doesn't say no... because the line was commented out.
I've just uncommented it,
2015 Jul 09
1
Bond & Team: RX dropped packets
Hi all,
we are testing CentOS 7 in order to migrate from Scientific Linux 6 /
CentOS 6 and we are facing an issue with the network. Trying to configure
network with teaming in activebackup mode or also with bonding in mode=1
(active backup as well) we see many RX dropped packets in the bond0
interface (around 10% of the total), 100% RX drops in the backup interface
and 0% in the active interface.
2012 Jan 18
2
Connecting ethX devices directly to a KVM/QEMU guest OS (no bridging)
Hello CentOS gurus, and a belated Happy New Year (or an early Happy
Chinese New Year).
I'm in the process of building a CentOS-6 KVM host machine whose only
function will be to run four independent 'm0n0wall' firewall guest
instances. I have a couple of quad-port Intel NICs to provide four
WAN-side and four LAN-side ports, which will not be shared with any
other guests. Remote
2014 Jan 15
4
default gw route has gone?
Weird behaviour.
A couple of days ago I installed another DSL router.
During the process I have somehow caused the default gw route to
disappear - on system start up the interface comes up fine, I can see
and connect to the local subnet but not to the internet.
[rkampen at timsws network-scripts]$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
2012 Jan 27
2
After a long break, one more try at bond/bridge nics
took a couple months off due to road blocks, hoping a fresh look would
allow me to use my server as desired.
I have three ports, eth0-2 over two nics.
I want to bond them, and then use a bridge to connect to virtual
machines on the virtual host computer.
Never having done this, I am confused on some parts.
Here is where I am at now and any pointers helpful. Single server,
centos 6.x
My issue
2015 Feb 18
3
Help with routing question.
CentOS-6.6
We have a host that has multiple IPv4 addresses aliased to eth0. The
primary address is 216.185.71.x and the alias is 192.168.6.x.
This host connects to devices on both netblocks without problems.
Only default routing is used and it looks like this:
#ip route
192.168.6.0/24 dev eth0 proto kernel scope link src 192.168.6.x
216.185.71.0/24 dev eth0 proto kernel scope link src
2013 Feb 17
3
IPV6 auto configuration cannot be disabled from if script.
I want to configure IPV6 on the system and not use some auto ipv6 config.
I have tried to use IPV6_AUTOCONF=no in interface script dose not affect
anything.
ifcfg-eth0:
GATEWAY=192.168.1.254
IPV6INIT=no
IPV6_AUTOCONF=no
BROADCAST=192.168.1.255
BOOTPROTO=none
NAME=""
NM_CONTROLLED=yes
MACADDR=""
TYPE=Ethernet
DEVICE=eth0
NETMASK=255.255.255.0
MTU="1500"
2014 Sep 07
1
Minimum RAM for CentOS7
Just FYI:
I had several problems to install CentOS 7 with 512 MB RAM. No log
showed me that problem (I would expect a system check before).
With 1 GB RAM everything runs fine. Don't know, what they do with
more than 512 MB RAM on a text only system during installation ...
Best Regards
Oli
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2013 Jul 31
2
start lxc container on fedora 19
hello,
i am new to lxc, i have created a lxc container on fedora 19
i created a container rootfs of fedora 19 by using
yum --installroot=/containers/test1 --releasever=19 install openssh
test1.xml file for container test1
<domain type="lxc">
<name>test1</name>
<vcpu placement="static">1</vcpu>
<cputune>