Hi,
I'm looking for help establishing (and troubleshooting) a link to a SPAN in promiscuous mode on Ubuntu Server 14.04.
This link was up and running and seeing packets for a few weeks. To help with an application issue, we installed the PF_RING kernel module, and after a server reboot, we have not been able to establish a link. We've rolled back our changes and removed PF_RING, but we are still not able to establish a link, and I'm looking for some help.
We've looked at our Gigamon SPAN and it appears to be sending data to our device but we have not been able to see any traffic ('tcpdump -i em1 -vv' does not see any traffic).
Any help would be greatly appreciated.
Jeff
$ifconfig em1
em1 Link encap:Ethernet HWaddr ec:f4:bb:**:**:**
UP BROADCAST NOARP PROMISC MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:7180 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
$ sudo ethtool em1
Settings for em1:
Supported ports: [ FIBRE ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Full
10000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: Unknown!
Duplex: Unknown! (255)
Port: FIBRE
PHYAD: 0
Transceiver: external
Auto-negotiation: on
Supports Wake-on: umbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: no
$ cat /var/log/syslog | grep ixgbe
Feb 17 15:16:46 servername kernel: [ 7.371724] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version 3.15.1-k
Feb 17 15:16:46 servername kernel: [ 7.371727] ixgbe: Copyright (c) 1999-2013 Intel Corporation.
$ cat /var/log/syslog | grep em1
Feb 17 15:16:46 servername kernel: [ 11.789614] systemd-udevd[572]: renamed network interface eth0 to em1
Feb 17 15:16:46 servername kernel: [ 14.071614] IPv6: ADDRCONF(NETDEV_UP): em1: link is not ready
Feb 17 15:16:46 servername kernel: [ 15.404429] ixgbe 0000:01:00.0: registered PHC device on em1
Feb 17 15:16:46 servername kernel: [ 15.509280] IPv6: ADDRCONF(NETDEV_UP): em1: link is not ready
Feb 17 15:16:47 servername kernel: [ 15.580413] ixgbe 0000:01:00.0 em1: detected SFP+: 6
Feb 17 15:16:48 servername kernel: [ 16.713425] device em1 entered promiscuous mode
Feb 17 15:16:48 servername kernel: [ 17.498677] ixgbe 0000:01:00.0 em1: detected SFP+: 6
$sudo ethtool -m em1
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
Connector : 0x07 (LC)
Transceiver codes : 0x10 0x00 0x00 0x01 0x00 0x00 0x00 0x00
Transceiver type : 10G Ethernet: 10G Base-SR
Transceiver type : Ethernet: 1000BASE-SX
Encoding : 0x06 (64B/66B)
BR, Nominal : 10300MBd
Rate identifier : 0x02 (8/4/2G Rx Rate_Select only)
Length (SMF,km) : 0km
Length (SMF) : 0m
Length (50um) : 80m
Length (62.5um) : 30m
Length (Copper) : 0m
Length (OM3) : 300m
Laser wavelength : 850nm
Vendor name : Intel Corp
Vendor OUI : 00:1b:21
Vendor PN : FTLX8571D3BCV-IT
Vendor rev : A
Optical diagnostics support : Yes
Laser bias current : 26.446 mA
Laser output power : 0.6639 mW / -1.78 dBm
Receiver signal average optical power : 0.0014 mW / -28.54 dBm
Module temperature : 51.65 degrees C / 124.97 degrees F
Module voltage : 3.3214 V
Alarm/warning flags implemented : Yes
Laser bias current high alarm : Off
Laser bias current low alarm : Off
Laser bias current high warning : Off
Laser bias current low warning : Off
Laser output power high alarm : Off
Laser output power low alarm : Off
Laser output power high warning : Off
Laser output power low warning : Off
Module temperature high alarm : Off
Module temperature low alarm : Off
Module temperature high warning : Off
Module temperature low warning : Off
Module voltage high alarm : Off
Module voltage low alarm : Off
Module voltage high warning : Off
Module voltage low warning : Off
Laser rx power high alarm : Off
Laser rx power low alarm : On
Laser rx power high warning : Off
Laser rx power low warning : On
Laser bias current high alarm threshold : 11.800 mA
Laser bias current low alarm threshold : 2.000 mA
Laser bias current high warning threshold : 10.800 mA
Laser bias current low warning threshold : 3.000 mA
Laser output power high alarm threshold : 0.8318 mW / -0.80 dBm
Laser output power low alarm threshold : 0.1585 mW / -8.00 dBm
Laser output power high warning threshold : 0.6607 mW / -1.80 dBm
Laser output power low warning threshold : 0.1995 mW / -7.00 dBm
Module temperature high alarm threshold : 78.00 degrees C / 172.40 degrees F
Module temperature low alarm threshold : -13.00 degrees C / 8.60 degrees F
Module temperature high warning threshold : 73.00 degrees C / 163.40 degrees F
Module temperature low warning threshold : -8.00 degrees C / 17.60 degrees F
Module voltage high alarm threshold : 3.7000 V
Module voltage low alarm threshold : 2.9000 V
Module voltage high warning threshold : 3.6000 V
Module voltage low warning threshold : 3.0000 V
Laser rx power high alarm threshold : 1.0000 mW / 0.00 dBm
Laser rx power low alarm threshold : 0.0100 mW / -20.00 dBm
Laser rx power high warning threshold : 0.7943 mW / -1.00 dBm
Laser rx power low warning threshold : 0.0158 mW / -18.01 dBm