A Network Interface Card is a computer component which connects to a physical network in order to send and receive data.

learn more… | top users | synonyms

1
vote
1answer
173 views

How to block outgoing traffic of the mac address of one of the server's own NIC with ip tables?

i have a server with 5 nics connected to a switch, and running GNS3 (cisco router emulator). I need to block, in the server, the packets originated by the nics at layer 2 level (the nics are not ...
1
vote
2answers
194 views

How to “dedicate” a 2nd NIC correctly without provoking a storm?

Some parts / aspects of this topic have been discussed here before. Leading up to my question: eth0 is the official nic of my ubuntu 12.04-server eth1 is the "local=yes" port of bridge 'br1' ...
1
vote
1answer
22 views

Protocol moves to another ethx Suse

I have a server which has 2 nics eth0 and eth1 eth0 is used for our email traffic server. everything working fine some time later a eth1 was added for backup purposes so this new nic sends data to ...
1
vote
1answer
432 views

How to configuring Ubuntu 10.04 server for multiple gateways in a simple way

I have a simple Ubuntu 10.04 server that runs a service. The system has two NIC cards each configured for separate networks. Each NIC needs a separate gateway, but when both are configured, eth1 ...
1
vote
1answer
419 views

2 NIC's are not loading by the Ubuntu Server

I have a Server with 5 NIC's. And I have just installed Ubuntu Server 11.10 64 bit fully dist-upgraded by now (31 Jan) 3 NIC's are identical PCI-Express x4 adapters. 1 is integrated TG3 and the last ...
1
vote
1answer
487 views

machines of two subnets communicate through CentOS(with two NICs)

folks. Firstly, I really have done a lot of searching, but still couldn't find a problem which was exactly the same as mine, and I have tried some of their answers, but didn't work. Finally, I put my ...
1
vote
1answer
1k views

How to use two physical NIC's inside a Xen guest?

I'm trying to make two physical interfaces visible to a Xen machine. I followed the guide (http://idolinux.blogspot.com/2008/08/xen-add-network-bridge-for-eth1.html), and created two Xen bridges for ...
1
vote
1answer
430 views

Server NIC: Difference between IntelPro MT and PT

What's the difference between IntelPro MT and IntelPro PT server adapter cards? Would one of them be better for iSCSI? Thanks!
1
vote
3answers
1k views

Hyper-V and Broadcom and Intel?

We just received our new server to begin our Hyper-V deployment. It was recommended that we get 4 NICs on the server. The server has 2 onboard BroadCom nics and 2 pci Intel Pro nics. The Broadcom ...
1
vote
2answers
597 views

One Comcast Business Gateway, One Router, Two Web Servers

I have a Comcast business account with a router and a web server (info) attached. behind the router there are multiple computers and a second web server (info) which also serves as a file server. ...
1
vote
1answer
784 views

Hyper-V multi-homed host NIC?

In Microsoft's Hyper-V virtualization engine, is it possible to have a multi-homed host NIC (i.e. with several different IP addresses) then have several guest VMs, each of which corresponds to one of ...
1
vote
1answer
3k views

iSCSI / SAN / Cluster / multiple NICs failover problem

Got a problem with NIC failover with iSCSI. Setup: A server with 3 NICs. One NIC is local network, other 2 are SAN. Using Microsoft iSCSI Initiator. A managed network switch. A QNAP SAN, connected ...
1
vote
1answer
459 views

Setting up dual NICs under Server 2008

I'm trying to determine how to set up dual NICs on my Server 2008 box (not R2). I want all web traffic on one NIC and all Hyper-V traffic on the other. Is this possible? ( I assume that it is ) ...
1
vote
1answer
171 views

connect server to server on secondary NIC

I have a CentOS box with multiple NIC's running Apache. I also have another box running RHEL that will be the MySQL server. I'm trying to use the secondary NIC on the Apache box to connect directly to ...
1
vote
4answers
1k views

How to determine which NIC data/traffic is using?

How to determine which NIC data/traffic is using? To make sure routing is correct.
1
vote
3answers
529 views

Server WAN interface periodically stops working until reboot

The setup I have a Windows Server 2003 SP2 server that is (hopefully temporarily) ghetto-hosted behind me in my office on our Comcast business connection. It has two NICs in it. The "private" NIC ...
1
vote
1answer
45 views

Disable NIC advanced properties in Windows server 2008/2012

I have some Rackspace VM's and need to disable these advanced NIC properties: Correct TCP/UDP checksum value IPv4 checksum offload Large receive offload Large send offload version 2 TCP checksum ...
1
vote
0answers
82 views

How to force/fake linux eth0 in 'up' status even without cable connected?

One of my testing script is eth0 status related, when eth0 goes down(cable unplugged), the script exit, and i need to unplug and plug cable many times due to test needs. is there anyway can fake ...
1
vote
0answers
182 views

Missing NICs in a HP ProLiant DL380 G6 running RHEL 5.5 64-bit

I have 2 twin boxes HP ProLiant DL3680 G6 running RHEL 5.5 64-bit. In one of them, two network interfaces (eth2 and eth7) are missing, i.e., they are not available: # ifconfig eth2 eth2: error ...
1
vote
0answers
228 views

Very high RX errors dropped and frame in eth1 interface

I'm seeing a NIC hang-up/crash on my server and every time i check ifconfig output, it gives me very high errors, dropped and frame: $ ifconfig eth1 eth1 Link encap:Ethernet HWaddr ...
1
vote
1answer
35 views

Spontaneously unmounting NFS exports and nicstat network activity

We have one server which exports two partitions which are massive (one is 61 TB, the other is 28 TB), and we have a lot of users reading and writing to these when mounted on another machine. We have ...
1
vote
1answer
2k views

Xen 6.2 - NIC bonding - LACP or active/active?

I have 3 XenServer 6.2 machines with 4x 1Gb NICs. Would I be better served by: putting these in an LACP bond at the switch putting these in an active/active at the xen server leaving them separated? ...
1
vote
2answers
619 views

Need to configure 2008 server with 2 NICs on different subnets

I am working on an application that requires a 2008 server to have 2 NICs for security purposes. NIC 1 will be connected to the customer's enterprise network with a static IP and is routable. It ...
1
vote
1answer
197 views

networking with one NIC and access to internet and virtual machines

I have installed opennebula and I have followed this tutorial. Unfortunately I cannot ssh to the virtual machines that appear to be in a running state and already have an IP. The problem might be that ...
1
vote
0answers
226 views

Dell Equallogic SAN - 4000 series to 6000 series connectivity issues

I have a 4000 series in production with two physical NICs and a group IP. I have a 6000 series in a DR site with four physical NICs and a group IP. 4000 series NIC1: 10.0.12.2 4000 series NIC2: ...
1
vote
1answer
316 views

can't connect 2 subnets through RRAS 2008 r2

I'm working on a project for a networking class. In VMWare Workstation, I have to set up a 2008 r2 server with DHCP reservations for 2 clients on separate subnets and have them ping each other. Here ...
1
vote
1answer
121 views

I couldn't get 2 NICs working together on Ubuntu 10.04

I've got an Ubuntu 10.04 server with this configuration: eth0: 192.168.10.XXX mask 255.255.255.0 gw 192.168.10.254 eth1: 192.168.0.XXX mask 255.255.255.0 gw 192.168.0.3 eth0 is used for incoming and ...
1
vote
0answers
280 views

Do Gigabit ethernet single-mode fiber network adapters exist?

I am attempting to set up a server with a total of four single-mode fiber ports - two need to be at least 1Gb and two must be 10Gb. I have found a variety of 10Gb single-mode fiber network adapters ...
1
vote
0answers
661 views

NIC Teaming , Multi-Homed, Active/Passive

I'm fairly new to NIC Teaming.. So I apologize if I’m not making any sense while describing this. I’ve, of course, set up plenty of simple Active/Active NIC teams for our servers without any issues ...
1
vote
1answer
277 views

Ubuntu Only Utilizes One Link in 802.3ad

I am currently using an Intel PRO/1000 PT LP Quad Port Server NIC with Ubuntu 12.04 LTS Server 64 Bit. I installed Gnome so I have a GUI. I downloaded bmon 2.0.1 to monitor the network, and right now ...
1
vote
0answers
435 views

Intel PRO/1000 PT LP Jumbo Frames in Ubuntu 12.04 LTS

I am having issues getting jumbo frames enabled in Ubuntu using an Intel PRO/1000 PT LP NIC with two bonded 1Gb lines. Following the readme that comes with the Linux driver, Ubuntu will not allow me ...
1
vote
1answer
987 views

Citrix XenServer, networking how

I am new to virtual servers, vlans. I am a programmer and have been assigned the task to make a stable storage server, i threw XenServer Free 5.6SP2 on an old box (HP ProLiant ML350 G5) set my ...
1
vote
1answer
124 views

Mirror traffic from x network card to VMware player

I have 2 Network cards and I am trying to monitor traffic going through one of them (the internet facing one), so that I can see what sites are visited the most and how much data is being used. I'v ...
1
vote
2answers
349 views

What's causing the delay in my network adapter binding to the network?

I have a server that takes several minutes for the NIC to bind itself to the network upon startup (it has a statically-configured IP). This causes the WINS and Intersite Messaging services (and ...
1
vote
1answer
650 views

How To Upgrade Network Driver To BNX2i

we have a server with a Broadcom NetExtreme II card which supports iSCSI offloading. According to the dell documentation, we need to be running the bnx2i driver to use the iSCSI offloading engine. We ...
1
vote
0answers
137 views

Linux FOG Server Memory

I'm a computer tech at my high school, and our technologically-superior head just got fired. He just set up a Linux FOG server before he left, and we have to re-image all the computers in the school ...
1
vote
0answers
453 views

NLB NIC w/ Static IP permanently “Acquiring Network Address” after adding more IP's to the cluster

We have a 2 node NLB cluster. I recently added more IP's to the cluster range, after which point, the NLB NIC's on both of my nodes ended up in a permanent "acquiring network address" state. The ...
1
vote
0answers
533 views

Receive Side Scaling disabled on a NIC Team

OS: Windows 7 Pro I'm working on a HP Compaq 8000 Elite Convertible Minitower PC and I added another NIC, I configured NIC Teaming (Switch Fault Tolerance mode) and I'm getting a pop-up box that ...
1
vote
2answers
1k views

WMI and adding Multiple IP Addresses?

Is it possible, with WMI, to bind IP addresses to a NIC? I have been able to enable a static IP, but I can't seem to find any information on adding additional IPs. this code helped and after I ...
1
vote
2answers
7k views

Multiple IP addresses on one NIC register twice in DNS server

We've got a build server (Windows Server 2008 SP2, 64-bit) which has one NIC and two IP addresses registered to that NIC (192.168.1.30 and 192.168.1.31). The build server is registering two identical ...
0
votes
4answers
11k views

2 Nics, 2 Gateways. How to choose which NIC to use for web surfing

I have 2 NICs in my machine, and we have 2 internets services on our LAN; one is a DSL one is a partial T-1. I have one NIC with the DSL as the gateway, and the other NIC has the T-1 as the gateway. ...
0
votes
7answers
365 views

Does a separate NIC protect other components (MB, etc.) from electrical surge?

Is this true or just a trick used by hardware salesmen?
0
votes
5answers
549 views

How do I diagnose slow file transfers from NIC errors/collisions?

I recently attempted to transfer a 3 GB file to a machine on my LAN using rsync -azvP. I noticed I was only getting 50kpbs. Both switch ports are 100/full. When I do an ifconfig, here's what I get: ...
0
votes
1answer
140 views

How to bond NIC on a virtual machine?

I'm puzzled about this process. Historically when I've setup an LACP bond on a piece of physical hardware I have to create the analogous setup on the switch. How does this work with a virtual machine ...
0
votes
1answer
58 views

Put NIC under heavy load [closed]

I think I've got a faulty NIC so I want to put it under heavy but controlled load to see if and when it dies. How can I generate such a load? The NIC is in a Hyper-V host with Windows and Linux ...
0
votes
3answers
87 views

Multiport NICs in servers and clusters [closed]

I wanted to know are multi-port NICs common in server systems? E.g in clustering are they used always?
0
votes
4answers
811 views

Dell PE 2850 NIC cycling - can't install latest drivers

I've just installed W2K8 R2 SP1 on a Dell poweredge 2850. The network card isn't working correctly - keeps cycling through these states: identifying, enabling, network, network cable unplugged. The ...
0
votes
2answers
693 views

Does the HP Proliant DL360 come with multiple NIC's?

Would someone be able to clarify multiple NIC cards to me, we have recently invested in a HP Proliant DL360, although do the network adapter cards come with 4 NIC's? E.g.: Networking: 2 HP NC382i ...
0
votes
1answer
87 views

Onboard Gigabit vs Add-in Server NIC [closed]

If you have server systems running high-end desktop PCs and a few running smaller SQL instances. The systems are time critical so the lower latency we can achieve the better. As it stands we don't ...
0
votes
2answers
100 views

Network adapters reliability

Can you help me with understanding of reliability of network adapters. Most of the time servers do have at least 2 NIC's bonded to provide sort of a HA for it. So in case of one NIC fails, the second ...