Email Required, but never shown. Leave a Reply Click here to cancel reply. You can follow any responses to this entry through the RSS 2. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. The C-NIC offers acceleration for all popular protocols used in the data center, such as:. This functionality also enables the adapter drivers to exploit the built-in host offload functions on the adapter as host operating systems are enhanced to take advantage of these functions. It is really starting to get frustrating for me..

Uploader: Vobar
Date Added: 20 October 2005
File Size: 12.90 Mb
Operating Systems: Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X
Downloads: 32669
Price: Free* [*Free Regsitration Required]

Most of the machines we use are HP Proliant models of one flavor or another. Peter B 6. Several virtual machines were running on the iSCSI storage and the results were monitored. Sign up using Facebook.

(iSCSI) Configuring Broadcom 10 Gb iSCSI offload

Post as a guest Name. Direct transfer of data by the RDMA network interface card RNICwith no need for host CPU involvement in the data transfer also known as kernel bypasssignificantly reduces CPU utilization of data communication and drastically reduces latencies for moving data from one machine to the other.


Designed and Hosted by Andy Barnes. I then changed it to use the Broadcom hardware dependant iSCSI initiator without jumbo frames, continuing to monitor the results. Thanks in advance, Lemmy. If you then inspect one of the newly discovered nodes, you should see the transport displayed thus:. Server Fault works best entxtreme JavaScript enabled.

iSCSI Offload on RHEL6

It can be only used as software iSCSI initiator. You must be logged in to post a comment. Magnus Andersson 21 2.

Additionally SAN HQ that comes with Dell EqualLogic provides additional confirmation and insight at the storage system level in ofdload to changes in perfomance. The transceiver is fully compatible with the IEEE Anyone who has attempted to get iscsi offload working under RHEL5 can tell you… it can be a challenge.

In this case bnx2i module is used instead of tcp. Below is from the iSCSI config guide: When traffic is light, the adapter driver interrupts the host for each received packet, minimizing latency. Post as a guest Name. Jumbo frames up to 9 KB. I believe “cnic” stands for “converged nic”. Posted in Red Hat Linux.

When traffic is heavy, the adapter issues one host interrupt for multiple, back-to-back incoming packets, preserving host CPU cycles. The adapter driver intelligently adjusts host interrupt frequency based on traffic conditions to increase overall application throughput. Jumbo Frames do not work and are not supported on broadcom HW dependant initiators. This functionality provides the flexibility to add new features to netxreme card and adapts it to future network requirements through software downloads.


Oi Overflow works best with JavaScript enabled. You should then see it find one copy of every node for each iface we used to do the query. Presumably, eth5 already has an IP address assigned to it we are hoping to use it for iSCSI communications, after all, and that gets tough if we have no IP configured.

Therefore, the adapter’s iSCSI offload architecture is unique as evident by the split between hardware and host processing. The C-NIC offers acceleration for all popular protocols used iscsl the data center, such as:. So, an example iface name would be bnx2i. I hope this offlosd. In order to use this iface, we just apply the same IP address to the iface as is assigned to the physical interface.