After doing a netstat -r and looking at the routing table I noticed that it set the default gateway to IP of eth1 which is just the internal network interface. Default 1 dis- abled. This issue may be seen with PCI-X adapters or with packet split disabled. Forcing master or forcing slave mode will improve time-to-link. Transmit interrupt reduction can improve CPU efficiency if properly tuned for specific network traffic. DMA Coalescing is effective in helping potentially saving the platform power only when it is enabled across all active ports.

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The Linux base drivers support the 2. This value is the number of transmit descriptors allocated by the driver.

Downloads for IntelĀ® 82541GI Gigabit Ethernet Controller

With some Phy and switch combinations, link can take longer than expected. The user should run the Linux firmware kit from http: WoL will be enabled on the system during the next shut down or reboot. Then select the name of the specified base driver: There is a known issue using Jumbo frames when connected to a Intfl BigIron switch.

Example output of the script: On some kernels a reboot is required to switch between a single queue mode and multiqueue modes, or vice-versa. If a system based on the, or controller is connected to a hub, the Activity LED will blink for all kntel traffic present on the hub.


The default value for each parameter is generally the recommended setting, unless otherwise noted. When e is loaded with default settings and multiple adapters are in use simultaneously, the CPU utilization may increase non-linearly.

FreeBSD Manual Pages

The user can enable it at compile time to add support for LRO from the driver. This value coincides with the maximum Jumbo Frames size of bytes. We recommend the newer 2. Allocating Rx buffers when using Jumbo Frames on 2. In this mode, which operates the same as mode 3, the InterruptThrottleRate will be increased stepwise to for traffic in class “Lowest latency”.

Multiqueue In this mode, a separate MSI-X vector is allocated for each queue and one for “other” interrupts such as link status change and errors. All hardware require- ments listed apply to use with FreeBSD. To eliminate the potential for the hang ensure that RxIntDelay is set to zero.

The default value is 0, since adapters may hang with this feature being enabled.

[SOLVED] Intel PI Gigabit Ethernet Controller Problem, CentOS x86_64 – CentOS

If you encounter the problem in 82541i adapter, and the chipset is an based one, you can verify that your adapter needs the fix by using ethtool: The range of to interrupts per second works on a majority of systems and is a good starting point, but the optimal value will be platform-specific. The configuration change can be made permanent by adding the line: For questions related to hardware requirements, refer to the documentation supplied with your Intel Gigabit adapter.


Increasing this value adds extra latency to frame reception and can end up lihux the throughput of TCP traffic. Channel Bonding documentation can be found in the Linux kernel source: Alternatively, you can use ethtool version 1. Due to limited support for PCI-Express in 2. Allows changing the interrupt mode at module load time, without requiring a recompile.

This driver supports receive multiqueue on all kernels that support MSI-X. The install location listed above is the default location.

LRO combines multiple Ethernet frames into a single receive in the stack, thereby potentially decreasing CPU utilization for receives. Due to the default ARP behavior on Linux, it is not possible to have one system on two IP networks in the same Ethernet broadcast domain non-partitioned switch behave as expected. Auto-negotiation is disabled, and the AutoNeg parameter is ignored.

This can be an issue on Linux distributions that timeout when checking for link prior to acquiring a DHCP address; however there is usually a way to work around this e.