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6

This sounds like a speed/duplex mismatch causing collisions and retransmits. Misconfiguration between the server and the other side could cause this. Another reason for the mismatch could be failing autonegotiation. Make sure both ends of the connection are configured identically regarding speed and duplex.


5

It means that you pinged the address, the IP has a PTR record (hence the name) but nothing responded from the machine in question. When we see this it's most commonly due to a subnet mask being set incorrectly - or in the case of IPs bound to a loopback interface that were accidentally bound to the eth interface instead. What is 196.220? What is it's ...


5

Great question that had me doing some reading to try and figure it out. Wish I could say I have an answer... but maybe some hints. I can at least answer your question, "should it be able to live on single interrupt per packet". I think the answer is yes, based on a very busy firewall that I have access to: Sar output: 03:04:53 PM IFACE rxpck/s ...


4

As Max Clark says, the <incomplete> just means that 69.59.196.211 has put out an ARP request for 69.59.196.220 and hasn't received a response yet. (In Windows-land you'll see this as an ARP mapping to "00-00-00-00-00-00"... It seems odd to me, BTW, that you're not seeing such an ARP mapping on 69.59.196.220 for 69.59.196.211.) I tend not to like to ...


3

Certainly given the CPU, chipset and bus capabilities in comparison to such a low amount of traffic you have there's no reason whatsoever for you to NEED any form of interrupt management. We have multiple RHEL 5.3 64-bit machines with 10Gbps NICs and their interrupts aren't too bad at all, this is 100 times less. Obviously you have a fixed configuration (I ...


3

Okay. After 3 weeks of intense battle I finally got it all figured out. I opened a case with Broadcom support and after going back and forth for a few days here is the response I received from a Broadcom software developer. Seeing a (vm_ipv4, host_mac_addr) or (vm_ipv6, host_mac_addr) pair on a remote station or switch is okay for many ...


2

Since you've statically set your arp entry, your servers know where to find the gateway. However, if your switch doesn't know where the gateway is, it won't forward your packets. Sounds like you've got a bad (or confused) switch between your HAproxy's and your web servers. Reboot it. Either that, or your HAproxy servers disagree about which one is in ...


2

The reason the static ARP on the haproxy node doesn't help is that your web server still can't figure out how to get back to the gateway. Static ARP on the web server breaks the ability for your web servers to switch gateways when one of the haproxy nodes failed -- I'm guessing the virtual interface shares the same MAC address as the haproxy node's eth1, so ...


2

This document shows the different states (table 2.1). Incomplete would mean that it has sent a first ARP request (presumably after a stale, delay, probe) but hasn't yet received a response.


2

I have built 3 clusters using 3 Dell R805's and a Dell MD3000i SAN connected to one switch and had similar issues to what people are saying here. The fix was to disable "IPv4 Large Send Offload". Since doing this all clusters and 40 VM's have not missed a beat. (4 months now). "Large Send Offload (LSO) is a feature provided by Broadcom network adapters ...


2

Is this on a Windows box? If so, bring up perfmon and add the counters for Network Interface/Packets Receieved Errors for the interface(s) in question and see what it shows. I'm pretty sure MS considers anyhting above 0 a problem.


2

Buffer is the cause of all the discard? CPU does not have time to handle all interrupts and buffer overflows. Therefore, packets drop. In general will this just cause a TCP retransmit? maybe, but you can see statistical TCP over netstat. They are pretty low counts, but are they a cause of concern? You can not worry too much small percentage ...


2

Don't rely on Windows Update to find drivers. It's very hit and (more often than not) miss. If this is a Dell add-in card, download the drivers from Dell Otherwise you can find the driver on Broadcom's support site.


2

The RX and TX buffers generally equate to one Ethernet frame. If you've configured the RX buffer count to 512, then the driver will set aside enough buffers to handle 512 Ethernet frames. The amount of memory will vary slightly as different NICs uses different buffer descriptor data structures, but in general you should multiply the buffer size by the MTU ...


2

Well, there is some advice on network card buffers that indicates more is better, generally: http://book.opensourceproject.org.cn/sysadmin/apache/apachetomcat/opensource/090.html Set the receive buffers on the Network Interface Card on the Web server to a maximum. This reduces the number of dropped packets and reduces TCP retransmissions. You can set ...


2

The question is somewhat aged already. I am not sure if it is still unresolved, but will try some troubleshooting advice nonetheless. First of all, it is important to check where zero-window-announcements occur. At certain points in the protocol exchange it might be perfectly valid for them to be there if the web server simply does not expect any data to ...


2

Here is the setting within SCVMM. I was having issues like you until I turned on Trunk mode for the Host. If you right click on the host in SCVMM --> Properties --> Networking tab


2

In the Broadcom Advanced Control Suite 3, select the head of the NIC, go to the configurations tab and look for "Jumbo MTU." P.S. Here's a good manual for BACS3 at Dell.com.


2

My shop currently uses teamed Broadcom NICs in PE710s for a Hyper-V cluster. A lot of the options are dependent on what you're doing with the particular link. In many cases, whether or not a certain feature is enabled will make no difference in the performance of the NIC. As such, most can be left in a default state with no ill effects. Since you're using ...


2

I was able to get this working with DKMS. There was an additional problem of not clobbering the tg3.ko that already exists in the kernel packages. I learned that there can be an "updates" directory under /lib/modules/$KERNELVERSION. This way, I don't have to worry about overwriting another package's files and there's an easy way to go back to the default ...


2

I believe you should investigate if any of the NIC driver/Windows NDIS offload settings relate to your problem. I am most suspicious of the LSO (Large Send Offload) function as I've seen it totally wreck a service (Dell server w. Broadcom NIC) in a manner which defied all troubleshooting book definitions of anything. The actual effect of LSO when it ...


2

The problem was hardware, not software. And apparently very simple one. Once the blade has been shut down, physically removed from the chassis and then reattached (at the same slot), we have finally attained a proper 10G link. Just that :)


1

Here's Serverfaults official answer on the matter: http://blog.serverfault.com/post/broadcom-die-mutha/


1

Are you using Broadcom's NIC teaming application (BACS)?? If so, I've found that certain switch hardware (Nortel) does not play nicely with that feature enabled in it's default failover mode (Smart Load Balancing and Failover). To test this, disable the NIC team for a period of time (you said a week?) and just use one NIC to connect for the time being. If ...


1

The solution to this problem is a minor change to bnx2x_compat.h. around line 1178, add an "#ifndef:" } #endif #ifndef PCI_VPD_LRDT #if ((!defined RHEL_RELEASE_CODE) && (LINUX_VERSION_CODE ...etc... And then close out the ifdef around line 1283: } #endif #endif // !PCI_VPD_LRDT #ifndef PCI_MSIX_FLAGS_QSIZE #define PCI_MSIX_FLAGS_QSIZE 0x7FF ...


1

I had the same issue - try: # cd bnx2/src first and then do # make && make install


1

Bigger packets during that time, resulting in less overall packets. E.g. some sort of bulk data transfer.


1

This question is a bit old now, but I came across it and thought I'd mention that we also had issues with this NIC on-board a Dell R710. Here's a link with some things you might try: http://answerpot.com/showthread.php?290594-Dell%20Power%20Edge%20R710%20with%20CentOS A colleague ended up resolving it with a combination of these steps. Summary: Update ...



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