Troubleshooting Network Interfaces

From the Web user interface (WUI)
From the command line interface (CLI)
- Analyze output
  - Tips
    - Bonding

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)

Open the DiagTools tab.
From Select list, choose interfaces.
Click Run.

From the command line interface (CLI)

Get root rights by typing root.

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