similar to: 8021q VLANs and pxe problem

Hi to the ML. I''m new to VLAN configuration, and combining it to XEN is a bit difficult. I want to use VLAN because it''s possible to "arping" from a domU to an other, and VLAN looks like; the only solution to prevent that. May be I''m wrong if someone got a solution, I may be interrested. I''ve also tryed ebtables, but nothing to prevent arp

I have 3 machines, T60 thinkpad with e1000 NIC Dell PowerEdge 2950 with bnx2 NIC HP DL360 G4P with tg3 NIC All running xen 3.03 / 2.6.16.29-xen I have a netbootable image with 2.6.16.29-xenU. This image when it boots creates a vlan eth0.4002, and then tries to communicate on that interface to a central server. On the machines with e1000 an bnx2 NICs, this works fine. On the

re can somebody tell me what am I doing wrong (at this late night hour), because vlan are not getting bridged at all. ifconfig eth0 0.0.0.0 up ifconfig eth1 0.0.0.0 up brctl addbr br0 brctl addif br0 eth0 brctl addif br0 eth1 ifconfig br0 up vconfig add br0 X vconfig add br0 Y X = vlan-ID (example: 222) Y = vlan ID (example: 223) # brctl show bridge name bridge

Hi, I want to add 2 vlans by the following steps: 1. add the vlan interfaces: vconfig add eth0 100 --vlan100 vconfig add eth0 101 --vlan101 2. modify the network-bridge script by the websit, http://wiki.xensource.com/xenwiki/XenNetworking#head-04ebcc1760dbc4678e83b116afa310dc0612dc39 Comment each time ifup or ifdown commands are executed.The reason is that ifdown ends with

Hi all, I have xen2.0.7 running in a fedora core 3 ! I have dom0 and domU running fine and communicating between each other as well between other machines on diferent networks. Still i want to improve my network setup and i start reading manuals and malling lists about bridging and vlans configuration! I have two nics each one associated to eth0 and eth1. Eth0 -> Vlan A Eth1 -> Vlan

Running on Centos 5.6 with KVM... I was wondering if anyone had any luck configuring the NICs where eth0 and eth1 are bonded together with vlan support to a bridge? I noticed some threads show this as a possibility (http://lists.centos.org/pipermail/centos-virt/2009-November/001417.html), but haven't had any luck implementing it. There also seems to be a bug with 5.6

<I apologize if this arrives twice... I sent it first from an non-subscribed address, don't know if that'll get to the list or not --JJ> Hi folks, I have an implementation question regarding bridging on a linux box between a catalyst trunk port and a cisco 26something w/802.1q subinterfaces. So right now, there's no vlan trunking going on on the link my bridging firewall sits

Hello. I''m trying to use vlan in domU, but have something strange: I created bridge on eth0. This interface was configured as trunk with vlan 300, 301. I use this bridge in my domU, and I can see tagged packets when run tcpdump in domU. Also I created interface on domU to work with vlan 300. On this interface I see untagged packets in vlan300. And everything looks fine. But when

--- In english --- Hello! I am to implement a new architecture of the network in my company but I do not know right where to start ... need help! Currently 90% of my servers are virtual machines under Xen. I have many valid IP networks and all Hypervisors are configured in bridge mode, to simplify. We have 3 VMWare ESX Hypervisor also in bridge mode. Some networks are exclusive to certain

My actual scenario is: -Hundreds PCs in a internal network (fixed IP), divided in +- 6 different subnets -A +- 6 customers with leased lines -A Cisco Catalyst 4006 connecting groups of PCs to corresponding customers (imagine a Call Center company) -Works fine. The problem: Frequently, it''s necessary to migrate dozens PCs from a customer to another. You know, change all IPs and

Does anyone have VLAN tagging working from within a guest on vmware-server? I'm running a centos 4.5 guest on a centos 5 host with vmware server 1.04and I've tried creating vlans using both the /etc/sysconfig/network-scripts method and just doing it from the cli via vconfig. Either way appears to work, the OS creates the vlans, but I think vmware's network adapter must be eating the

Hi all, i need config xen with this ___________ __________ |VM1 |----------------bridge1-------------------| | |__________ | | | ____________ | |-----BALBLA |VM2 |

Hi, I'm using Vlans in my network as a way of preventing pier to pier communication - I only want nodes in the network to talk to the gateway (a linux box). I have successfully set up lots of sub interfaces using the vconfig too, one for each vlan. What I would like to be able to do is remove the ip address from each of these subinterfaces eth0.x and bridge them to eth0. I have successfully

Hi, I am configuring some servers in a high availability setup. The servers are connected to two switches with two LAN cards in each server. The two switches are connected directly to each other. The servers are configured to bridge eth0 and eth1 with spanning tree. Usually this makes sure eth1 is disabled, unless something happens to eth0. This way I can have one IP address on each server. Now

For some reason I cannot kickstart via pxe after installing a new SMC 48Port GigE switch. I swapped out an old hub to test and kickstarting still works with the old hub. Does anyone have any suggestions, --

We are using Centos behind an F5 Bigip load balancer. The linux box is using bonding and tagged VLAN's Everything works fine except that when traffic is forwarded from the BigIP to the linux box on the VLAN where the web server is running the linux box returns the traffic on the wrong VLAN, It returns traffic on the lowest ordered VLAN. ie. here is a tcpdump on my load balancer showing

Has someone created a how to or a tutorial for installing/configuring DELL openmanage on centos ? --

Hi, examining the network traffic with wireshark shows that asterisk does not set any QoS values at all. What do I need to do to make asterisk set QoS values (on Centos 7)? The wiki says to use vconfig to set QoS values[1]. What does the skb-priority need to be set to? How do you use vconfig on interfaces that are not VLAN interfaces? Is it generally impossible to set QoS values on

Hello I have few questions regarding tc functionality (qdiscs, classes, etc.) when vlans are in use. For example, consider interface eth0, for which I create and extra vlan with vconfig, let''s say eth0.11. Then using tc I can add usual things - qdiscs, filters, ... - to both eth0 and eth0.11. The questions are: - on which interface - virtual or real, should I actually use tc ? Or

My BIOS shows all my RAM, but when I boot up linux it does not see all the RAM I have two one GIG sticks of RAM, which show up in my bios, but when typing free, I see that it only shows 256Megs. Is there a way to specify the amount of RAM if linux cannot detect this, or how can I fix/tweak the OS to recognize the amount of RAM my OS is centos-4-x86_64 on a DELL 1850 [root at smtcorav02 ~ ]#