AFAIK the reciver is what it is for point-to-point. Even with a LAG configured the switch load-balance the traffic based on a combination of source/destination IP or source/destination MAC address. For point-to-point communication the switch will always use a single LAG member. Point-to-Multiple should however be faster with LAG configured.
In theory the way to increase the speed on "recive" would be to configure the sender to use different source IP's or Source/Destination MAC addresses and loadbalance outgoing trafic so that the switch LAG will balance it accross all egress interfaces. Don't know if that is possible to configure... it depends on the sender I suppose. Regards Harald ________________________________________ From: linux-poweredge-bounces-Lists On Behalf Of Francisco Morillo [[email protected]] Sent: Tuesday, November 09, 2010 2:34 PM To: linux-poweredge-Lists Subject: NIC Teaming and PowerConnect 6248 Dear all, Do you have an idea about the best settings I can use to increase point-to-point throughput? With a 4 NIC teaming in balance-rr I cannot achieve more bandwidth than if I use a 2 NIC team, sometimes it is even worst. I have tested the connections by using netperf and a practical test using rsync. I currently have 2 PE2950, each one has an Intel 4 Port Gigabit card. Installation is RHEL 5. Latest igb driver installed manually and GRO is off. MTU is 9000. For each machine, all four cables are connected to a PowerConnect 6248 switch. Do you know what special settings should I use in the switch to increase the speed. Currently I have increased the MTU for the ports but no LAGs configured for this and it seems to work without trouble. I also noticed that although the Transmit load in the interfaces is evenly distributed, the receive is not. Now reading it seems that I need to create a LAG and configure STP and Bridge Multicast support. Any ideas would be welcomed. Thanks, Francisco _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
