Hey Aleksey, Jesse Brandeburg just mentioned you might have been talking about autoneg of FC. Which I can understand your confusion. 10GbE Spec doesn't support that.
Let me know if this isn't what you were concerned about. Thanks, -Don >-----Original Message----- >From: Skidmore, Donald C >Sent: Thursday, December 15, 2011 2:34 PM >To: 'Aleksey Chudov'; [email protected] >Subject: RE: [E1000-devel] ixgbe does not disable Flow Control > >Hi Aleksey, > >I'm not sure I understand your question here. Are you asking why igb >has FC off by default and ixgbe has it on? If so at least for ixgbe >(the driver I maintain) that was a deliberate choice based on the >majority use case of our customers. If that isn't what your concern >here is could you give me a little more details or reword the question? >Hopefully I can catch on after that. :) > >Thanks, >-Don > >>-----Original Message----- >>From: Aleksey Chudov [mailto:[email protected]] >>Sent: Thursday, December 15, 2011 10:29 AM >>To: [email protected] >>Subject: [E1000-devel] ixgbe does not disable Flow Control >> >>Hello! >> >>I have two servers. One with Intel 82576 Gigabit NIC and second with >>Intel Corporation 82599EB 10-Gigabit NIC installed. >>Both servers connected to Cisco 3750X switch. Flow control is disabled >>by default on all switch ports. >> >>There were Discards In on a second server (82599EB, ixgbe). But after >>manually disabling Flow control they are gone. >> >>As shown below igb driver disable Flow Control but ixgbe does not >>disable Flow Control >> >>Intel 82576 Gigabit NIC >> >># ethtool -i eth0 >>driver: igb >>version: 2.1.0-k2 >>firmware-version: 1.4-3 >> >># ethtool -a eth0 >>Pause parameters for eth0: >>Autonegotiate: on >>RX: on >>TX: off >> >> >>Intel Corporation 82599EB 10-Gigabit NIC >> >># ethtool -i eth4 >>driver: ixgbe >>version: 3.7.14-NAPI >>firmware-version: 0x18f10001 >> >># ethtool -a eth4 >>Pause parameters for eth4: >>Autonegotiate: on >>RX: on >>TX: on >> >> >>Best regards, >>Aleksey >> >> >>----------------------------------------------------------------------- >- >>------ >>10 Tips for Better Server Consolidation >>Server virtualization is being driven by many needs. >>But none more important than the need to reduce IT complexity >>while improving strategic productivity. Learn More! >>http://www.accelacomm.com/jaw/sdnl/114/51507609/ >>_______________________________________________ >>E1000-devel mailing list >>[email protected] >>https://lists.sourceforge.net/lists/listinfo/e1000-devel >>To learn more about Intel® Ethernet, visit >>http://communities.intel.com/community/wired ------------------------------------------------------------------------------ 10 Tips for Better Server Consolidation Server virtualization is being driven by many needs. But none more important than the need to reduce IT complexity while improving strategic productivity. Learn More! http://www.accelacomm.com/jaw/sdnl/114/51507609/ _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
