similar to: To broadcast or not to broadcast...

El 21 de febrero de 2017 7:00:03 GMT-05:00, centos-request at centos.org escribi?: >Send CentOS mailing list submissions to > centos at centos.org > > >From: Kahlil Hodgson <kahlil.hodgson at dp.exchange> >To: CentOS mailing list <centos at centos.org> >Subject: Re: [CentOS] Network conections problems > >First guess is that you may have two devices on the

Hi, We''re trying to run Xen on a Debian "Etch" base system (kernel 2.6.18-6-xen-amd64), but have come across a strange networking error whenever bridging (vif-bridge/network-bridge) is in operation. The symptom is that the dom0 base system loses all network connectivity to the outside world while the two guest instances function perfectly well. As far as we can tell, we

Hello, I already asked similar question on May 2014. Then it started to work on CentOS 7.0 and 7.1. Now it fails again on 7.2. Setup is 2 network cards in a team, and then bridge between team and vnet0. The problem is, that I can ping KVM guest from host, but not from LAN. >From KVM host: arping -I br0 192.168.0.200 ARPING 192.168.0.200 from 192.168.0.201 br0 Unicast reply from 192.168.0.200

On 23/02/17 08:27, Rommel Rodriguez Toirac wrote: > The solution was another IP address to this network device and then > everything work fine. > Why this happend? How I can erase the link beteewn MAC 00:1D:09:FF:44:4B and IP 192.168.41.4? Where can be stored this link? > Right now in the network is not assignet the IP address 192.168.41.4 to no one device (printserver, switch,

Op 28-01-15 om 20:17 schreef Gordon Messmer: > On 01/28/2015 05:15 AM, Patrick Bervoets wrote: >> >> When connecting with ssh the console is extremely slow and hangs for >> minutes at a time > > Check for IP address conflicts in the server's network. > > For IPv4: > # arping -D -I <interface> <address> > ARPING 192.168.1.15 from 0.0.0.0 br0

I must have something configured wrong somewhere. I''ve enabled proxy-arp on my shorewall 2.0.7 firewall. Works fine for what its supposed to do, I can see all the machines through it great. However, whenever its enabled, the network on the DMZ goes screwy. I''ve narrowed it down to this: when proxy arp is enabled for that interface, like such: echo 1 >

Op 29-01-15 om 00:00 schreef Gordon Messmer: > On 01/28/2015 12:12 PM, Patrick Bervoets wrote: >> >> ARPING 192.168.1.15 from 0.0.0.0 br0 >> Unicast reply from 192.168.1.15 [AC:16:2D:72:67:D4] 0.723ms >> Sent 1 probes (1 broadcast(s)) >> Received 1 response(s) >> >> Thanks anyway > > I'm not sure what you mean by "thanks anyway".

Hi folks, Has anyone out there done port forwarding or DNAT for UDP packets that are normally sent to the broadcast address (255.255.255.255)? I have to support a nasty database application called FileMaker Pro (those of you who know it are probably groaning about now), which uses broadcasts to locate the database server. Theoretically, i can get around this requirement by using LDAP lookups

Hi, I have joined a RedHat-7.1 box with Samba 2.2.2 to a NT Domain, and everything works perfect. Except when I look in de log file I see a name query error every 5 minutes , and I don't know how to solve this problem. The PDC-A is de primary domain controller and tux is the linux box with samba. I made u tcpdump on the same moment when I receive the error and it seems that the NT box sends

On 01/28/2015 12:12 PM, Patrick Bervoets wrote: > > ARPING 192.168.1.15 from 0.0.0.0 br0 > Unicast reply from 192.168.1.15 [AC:16:2D:72:67:D4] 0.723ms > Sent 1 probes (1 broadcast(s)) > Received 1 response(s) > > Thanks anyway I'm not sure what you mean by "thanks anyway". You got a response. There's an IPv4 conflict on your network. That's why

Hello, I have some domU accounts running CentOS 4.4 and whenever I try to bring up the network interface it fails with the following errors: [root@test5.liquidweb.com] ~ # ifup eth0 Usage: grep [OPTION]... PATTERN [FILE]... Try `grep --help'' for more information. Usage: grep [OPTION]... PATTERN [FILE]... Try `grep --help'' for more information. Usage: arping [-fqbDUAV] [-c

Hello list, I'm setting up a virtual network consisting of several UMLs (User Mode Linux) connected with the virtual bridge. Communications works quite well between the host and the virtual machines. Setup: 2 UMLs connected via tap-devices to the bridge (tap1,tap2). The host uses the bridge-device br0 to talk to the clients. Now I want to tcpdump the traffic between host and UML1 on virtual

Hello. I'm using Samba 3.0.25a on FreeBSD-6.0. Samba is configured to be a PDC. Samba can't find its hostname via nmblookup: $ nmblookup -B 192.168.1.255 frontier querying frontier on 192.168.1.255 name_query failed to find name frontier If I query Samba via unicast, it answers OK: $ nmblookup -U frontier frontier querying frontier on 192.168.1.31 192.168.1.31 frontier<00> Also,

Hi Guys, I had a situation yesterday where I had a 10Gbe adapter on my lustre client configured but not active (the cable was plugged in and had link but the port was down) and this actually brought down our cisco switch. This is a new port that I am setting up. The reason why the switch went down was due to the amount of broadcast traffic coming from this port even though it was shutdown:

Ok, I'm stumped. Last week domain logons worked. Now when I try to logon, I get a message, "You could not logon because the SJSA domain is not available. I've had this happen before when the trust account between the client and server was out of sync (restored a disk image that had a different trust account password) To fix this, it has been sufficient to quit the domain, reset

Greetings! I am still struggling with the issue that after vampiring from NT4 domain to Samba 3.0.7 with ldap backend, Windows XP cannot find the domain controller. In particular, WXP is an XP Prof which signed in AB_INITIO_DOM domain. After the migration I put the Samba Server (Priscilla) and WXP in an isolated network, and started up Priscilla as PDC for the network. But WXP

Hey guys, I am planning to buy some components for a Linux router that will handle the Internet access of 200 computers (includes tc shaping) and some inter sub-network routing (at least 100MBps per eth - and there are 3 eth cards). I was thinking of a: Pentium 4 - 3GHz 256 or 512MB RAM Network Cards. Now - I wonder what is more important: the processor speed or the amount of RAM. And can you

Background: I have 2 SMB Servers; one is configured to be the Preferred Master (fserver), the other (upstairs) is configured to just share some files. I want it to connect and update the WINS configuration on the Preferred Master. Configuration files for both servers are attached. Also worth mentioning that both the 'fserver' and 'upstairs' reside on the same network. Some

Hello, samba v3.0.7 on suse linux v9.1 os/2 v4.x I have started the process of replacing our os/2 hosts with linux, starting with the server(s). Most of the problems have been firewall related, a topic only briefly discussed in the docs (nudge). Some of the hosts can now interact with the linux samba shares; not all though. I have run ip traces and have gotten to a point that is a

Several weeks ago (July 1st), you may remember me asking about using a Linksys WET11 (ethernet to wireless bridge) with bridge-utils. Mark Mathews was kind enough to respond and described a situation he called "b/mcast echo". From his reply: " Because of the games that have to be played to build WLAN station bridge devices, some have a problem with what I call 'b/mcast