Displaying 20 results from an estimated 10000 matches similar to: "virtual interfaces"
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
2009 Jul 01
3
Multiple Internet facing Nics - Gateway issue
I have a server with 4 nics. Two are using different internet connections,
both with static IP's, and two are connected to our private network.
The two internet facing nics seem to be battling over the gateway
designation. Which ever I designate as the gateway the other stops
responding to incoming traffic. I need both to listen to inbound traffic.
One for our main web page and the other
2007 Aug 23
3
Using Puppet to swap eth0 and eth1
I''ve been using Puppet now for a month or so and I''ve come to a
problem that may warrant an additional Puppet metaparameter. I''m
advocating the addition of a metaparameter called "preaction" (or
something like that), which will perform some arbitrary action before
the resource is modified. There may be a way to do this within
Puppet already (with some
2008 Jul 17
6
Simple IP Question
I have a server located remotely running CentOS 5.x. I need to have
two IP's on the same interface. So I have this:
/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=none
BROADCAST=69.x.x.199
HWADDR=00:x:x:x:c6:10
IPADDR=69.x.x.194
NETMASK=255.255.255.248
NETWORK=69.x.x.192
ONBOOT=yes
GATEWAY=69.x.x.193
TYPE=Ethernet
So I added this:
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
2011 Sep 27
2
Dashboard parameters to control VIPs?
Some of the Red Hat Enterprise Linux servers in our environment
sometimes get assigned virtual IP addresses (eth0:1, eth0:2, etc).
Puppet Dashboard''s parameters seem like an ideal way to define and
provision virtual IPs on these servers. One could create a "vip1"
parameter on a node, and define a value of the IP address to use for
that vip. A manifest could then be written to
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
2010 May 28
1
bogus bond0 device showing up in /proc/net/dev
I'm running into a situation where a bogus bonded interface named
"bond0" is being created, in addition to the desired "bond2" interface.
Can anyone confirm this? Anyone know why it's happening or what I do
to get rid of it? I wanted to start my numbering scheme at 2 instead of
0, which I didn't think would be a problem.
As you can see, I have no reference
2011 Jun 13
4
A bridge problem
We just went to replace the bridge/firewall services one one server with
the same on another. It's pretty simple, and I literally cloned (w/ rsync)
a third server that does this onto the one that will be the new one. Then
copied the /etc/sysconfig/iptables from the one being replaced, and
brought it up this morning.
Nope. We had to put everything back the way it was.
The new one sees the two
2014 Nov 05
1
centos-7 reinstall
I have a test system that I am using to investigate CentOS-7. I note the
following difficulty when booting from the Minimal Install DVD.
Neither on the initial install nor on subsequent attempts at re-installing
CentOS-7 can I set the IPv4 interface to a static IP address. I can configure
it but I cannot save the changes. The save button remains greyed out.
--
*** E-Mail is NOT a
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
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
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
2009 Dec 11
3
KVM: bridge configuration for static IP address
I need to allocate public IP address to two guest os.
I have only 2 network card Interface on server. say eth0 and eth1.
I set eth1 a public IP address. so it should in
# vi /etc/sysconfig/ifcfg-eth1
DEVICE=eth1
BOOTPROTO=static
HWADDR=00:1a:4d:83:ad:00
BROADCAST=202.127.29.0
IPADDR=202.127.29.5
NETMASK=255.255.255.0
NETWORK=202.127.29.0
ONBOOT=yes
TYPE=Ethernet
Question 1: do I have to
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
2010 Jul 13
1
incoming works out does not (prolly a newbie question)
host and guest both centos 5.5
network is 192.168.62.40
host is setup as follows
[root at cloud2 ~]# ifconfig
br0 Link encap:Ethernet HWaddr 00:1A:64:12:10:D9
inet addr:192.168.62.199 Bcast:192.168.63.255 Mask:255.255.254.0
inet6 addr: fe80::21a:64ff:fe12:10d9/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1705488
2011 May 16
1
bond empty after reboot
Hi all,
I've setup a ethernet bond on my centos 5.6 server , when i do a reboot
the bond does come up but cleared all the slaves
and i've to manually re-add them with ifenslave.
does anyone know a solution to this? am i missing something? offcourse i
can add it to my rc.local but there must be a more elegant way. please
see my configs below
Thanks,
Wessel
ifcfg-bond0:
DEVICE=bond0
2011 Oct 08
1
CentOS 5.7 Ethernet bonding - order of enslavement matters?
Setting up bonding in active-backup mode 1 (using ARP monitoring)
on a server, it looked OK, but pulling the active link cable
didn't actually work, it didn't fail over.
Eventually with manual playing around with modprobe, ifconfig,
ifenslave, etc., a solution was stumbled upon: enslave the eth1
device before eth0, and all is good.
Why this should matter is a puzzle - I could not find
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
2009 Oct 06
1
ifconfig showing same mac for 2 nics in same bond
Hi all,
I just noticed that my two nics that are bonded via mode 0 are showing
the same mac addy in ifconfig.
Is this normal?
In syslog I keep getting;
kernel: pbond0: received packet with own address as source address
Some guidance is appreciated before I dive in and troubleshoot.
If I don't list the mac addy in my ifcfg-th# files, only one of the 2
nic comes up during boot.