Unknown Ethernet Media in ix(4) interface using DAC cable in SFP+ switch

tetsuo

tetsuo

Hello. So I've bought a SFP+ 10gbps switch with 2.5GbE ports. When I connect my NIC () to the switch, i run ifconfig and the media it's not 10Gbits or something similar but rather unknown:

Code: 
ix0: flags=1008943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
    options=a538b9<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,HWSTATS>
    ether 5c:b9:01:8b:67:14
    inet 192.168.1.230 netmask 0xffffff00 broadcast 192.168.1.255
    inet 192.168.1.166 netmask 0xffffffff broadcast 192.168.1.166
    inet 192.168.1.182 netmask 0xffffff00 broadcast 192.168.1.255
    inet 192.168.1.173 netmask 0xffffff00 broadcast 192.168.1.255
    inet6 fe80::5eb9:1ff:fe8b:6714%ix0 prefixlen 64 scopeid 0x1
    inet6 2a0c:5a82:e502:d200:5eb9:1ff:fe8b:6714 prefixlen 64 autoconf
    media: Ethernet autoselect (Unknown <rxpause,txpause>)
    status: active
    nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

I get 10gbps connection. Yes, but the media isn't detected, why is this? Here's the info about the NIC

Code: 
~ [icarus] % pciconf -lv | grep -C 4 -i ix
ix0@pci0:4:0:0:    class=0x020000 rev=0x01 hdr=0x00 vendor=0x8086 device=0x10fb subvendor=0x103c subdevice=0x17d0
    vendor     = 'Intel Corporation'
    device     = '82599ES 10-Gigabit SFI/SFP+ Network Connection'
    class      = network
    subclass   = ethernet
ix1@pci0:4:0:1:    class=0x020000 rev=0x01 hdr=0x00 vendor=0x8086 device=0x10fb subvendor=0x103c subdevice=0x17d0
    vendor     = 'Intel Corporation'
    device     = '82599ES 10-Gigabit SFI/SFP+ Network Connection'
    class      = network
    subclass   = ethernet

thanks
 
Code: 
ix0: flags=1008943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
    options=a538b9<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,HWSTATS>
    ether 5c:b9:01:8b:67:14
    inet 192.168.1.230 netmask 0xffffff00 broadcast 192.168.1.255
    inet 192.168.1.166 netmask 0xffffffff broadcast 192.168.1.166
    inet 192.168.1.182 netmask 0xffffff00 broadcast 192.168.1.255
    inet 192.168.1.173 netmask 0xffffff00 broadcast 192.168.1.255
    inet6 fe80::5eb9:1ff:fe8b:6714%ix0 prefixlen 64 scopeid 0x1
    inet6 2a0c:5a82:e502:d200:5eb9:1ff:fe8b:6714 prefixlen 64 autoconf
    media: Ethernet autoselect (Unknown <rxpause,txpause>)
    status: active
    nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
    drivername: ix0
    plugged: SFP/SFP+/SFP28 Unknown (Copper pigtail)
    vendor: FIT PN: CUFCD1A-DAG05-EF SN: CF1610TW50X4BC-A DATE: 2016-03-04
Yup. Here
 
So this is a passive DAC?
Those are always hit-or-miss. I've given up on struggling around with those things 10+ years ago. Use AOCs if you must or just go for a pair of real transceivers (which are at the same price point as an AOC).
 
In that case you'd probably have to be content with it getting at least a working link.
If you want it to properly report the link type/speed and also reliably work at line speed, a proper switch and at least some halfway trustworthy transceivers/AOC would be necessary...
TBH, I also buy a lot of stuff from aliexpress, but given that transceivers have become really cheap and used ones absolutely dirt-cheap, I never bothered buying them from aliexpress with completely unknown origin/quality. Same goes for switches - enterpise(-y) gear can be found really cheap and *just works* - the few bucks saved with noname gear isn't worth the trouble of dealing with flaky and often weirdly implemented firmware...
 
You must log in or register to reply here.
Back
Top