Hi,

one of our servers has some network issues. Symptoms are: Bad ping (twice
as high as comparable machines on the same net), packet loss and increasing
number of Ierrs in "netstat -i".

Is there any chance I can find out the reason behind those Ierrs?


I rebooted the system a few hours ago, and there are some Ierrs again
already:

tethys# netstat -i
Name  Mtu   Network       Address              Ipkts Ierrs    Opkts Oerrs Colls
wm0   1500  <Link>        00:30:48:xx:xx:xx  2385235   714  1996966     0     0
[...]


Some more information (system ist running NetBSD/amd64 6.1.5):

wm0 at pci7 dev 0 function 0: Intel i82573E IAMT (rev. 0x03)
wm0: interrupting at ioapic0 pin 16
wm0: PCI-Express bus
wm0: 256 word (8 address bits) SPI EEPROM
wm0: Ethernet address 00:30:48:xx:xx:xx
makphy0 at wm0 phy 1: Marvell 88E1111 Gigabit PHY, rev. 2


wm0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        
capabilities=7ff80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Rx,TCP6CSUM_Tx,UDP6CSUM_Rx,UDP6CSUM_Tx,TSO6>
        
enabled=3f80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx>
        address: 00:30:48:xx:xx:xx
        media: Ethernet autoselect (100baseTX 
full-duplex,flowcontrol,rxpause,txpause)
        status: active
        inet 212.62.xx.xx netmask 0xfffffff8 broadcast 212.62.xx.xx
        inet6 fe80::230:48ff:xxxx:xxxx%wm0 prefixlen 64 scopeid 0x1

-- 
Frank Wille

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