The purpose of troubleshooting is to retrieve information related to network interfaces, such as:

  • Administrative status

  • Link status

  • Statistic counters

  • MAC address

From the Web user interface (WUI)

  1. Open the DiagTools tab.

  2. From Select list, choose interfaces.

  3. Click Run.

From the command line interface (CLI)

  1. Get root rights by typing root.

  2. Run netstat -nie.

    Example output

    eth0    Link encap:Ethernet  HWaddr 00:0D:B9:19:22:EC
          inet addr:10.0.0.3  Bcast:0.0.0.0  Mask:255.255.0.0
          inet6 addr: fe80::20d:b9ff:fe19:22ec/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:7123234 errors:0 dropped:0 overruns:0 frame:0
          TX packets:311584 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:444012883 (423.4 Mb)  TX bytes:21104121 (20.1 Mb)

Analyze output

HWaddr

network interface MAC address

inet addr and Mask

IPv4 address and Netmask

inet6 addr

IPv6 address and Netmask

labels

BROADCAST

broadcast packets are allowed

MASTER

this interface is a bonding master (usually a bondX)

MULTICAST

multicast packets are allowed

MTU

current MTU

NOARP

RUNNING

network link is available

SLAVE

this interface is a bonding slave (usually an ethX)

UP

operational interface state

RX packets, errors, dropped

number of received, errors and dropped packets

TX packets, errors, dropped

number of transmitted, errors and dropped packets

collisions

number of layer 2 errors

RX bytes

number of bytes received on this interface

TX bytes

number of bytes transmitted on this interface

Tips

Bonding

When the bonding configuration is correctly set up:

  • The bondX interface has at least the MASTER and MULTICAST labels

  • The ethX interfaces have at least the SLAVE and MULTICAST labels

  • Both bondX and associated ethX are UP

  • The bondX and ethX interfaces have the same MAC address

Example output

bond0   Link encap:Ethernet HWaddr 00:0D:B9:13:52:2D
  inet addr:10.0.32.10 Bcast:0.0.0.0 Mask:255.255.0.0
  UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:0
  RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
eth0    Link encap:Ethernet HWaddr 00:0D:B9:13:52:2D
  UP BROADCAST NOARP SLAVE MULTICAST MTU:1500 Metric:1
  RX packets:0 errors:0 dropped:0 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)
  Interrupt:11 Base address:0x2000
eth1    Link encap:Ethernet HWaddr 00:0D:B9:13:52:2D
  UP BROADCAST NOARP SLAVE MULTICAST MTU:1500 Metric:1
  RX packets:0 errors:0 dropped:0 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)
  Interrupt:12 Base address:0x4000