To all network masters: Can you please throw some light on how to debug ethernet errors and overruns. below is network interface. eth4 Link encap:Ethernet HWaddr 00:10:18:98:D7:18 inet6 addr: fe80::210:18ff:fe98:d718/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:91675115854 errors:3057985 dropped:0 overruns:3057245 frame:740 TX packets:20876846657 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:118442063462040 (107.7 TiB) TX bytes:21442788961564 (19.5 TiB) Interrupt:40 Memory:dc800000-dcffffff We are using 10G broadcom dual nics with tcp buffersize #SCSI TCP buffer fix net.core.rmem_max = 1073741824 net.core.wmem_max = 1073741824 net.ipv4.tcp_rmem = 1048576 16777216 1073741824 net.ipv4.tcp_wmem = 1048576 16770216 1073741824 net.ipv4.tcp_mem = 1048576 16770216 1073741824 and iscsi config as below. node.startup = automatic node.session.timeo.replacement_timeout = 120 node.conn[0].timeo.login_timeout = 15 node.conn[0].timeo.logout_timeout = 15 node.conn[0].timeo.noop_out_interval = 10 node.conn[0].timeo.noop_out_timeout = 15 node.session.initial_login_retry_max = 4 node.session.cmds_max = 128 node.session.queue_depth = 128 node.session.iscsi.InitialR2T = No node.session.iscsi.ImmediateData = Yes node.session.iscsi.FirstBurstLength = 16776192 node.session.iscsi.MaxBurstLength = 16776192 # the default is 131072 node.conn[0].iscsi.MaxRecvDataSegmentLength = 16776192 # the default is 32768 discovery.sendtargets.iscsi.MaxRecvDataSegmentLength = 16776192 node.conn[0].iscsi.HeaderDigest = None node.session.iscsi.FastAbort = No Thanks, Vamshi .D -- //www.freelists.org/webpage/oracle-l