Diagnostics. Lantronix Lantronix SLC

13: Maintenance

Diagnostics

The

Maintenance > Diagnostics page provides methods for diagnosing problems such as network

connectivity and device port input/output problems. You can use equivalent commands on the command line interface. An additional diagnostic, loopback, is only available as a command.

Click the Maintenance tab and select the Diagnostics option. The following page displays:

Figure 13-7 Maintenance > Diagnostics

Select Diagnostics from checklist (one or more diagnostic methods you want to run, or select

All to run them all):

ARP Table

Netstat

Host Lookup

Address Resolution Protocol (ARP) table used to view the IP address-to-hardware address mapping.

Displays network connections. If you select the checkbox, select the TCP or UDP protocol, or select All for both protocols to control the output of the Netstat report.

Select to verify that the SLC console manager can resolve the host name into an IP address (if DNS is enabled). If selected, also enter a host name in the corresponding

Hostname field,

SLC™ Console Manager User Guide 230

13: Maintenance

Ping

Send Packet

Loopback

SLC Internals

Select to verify that the host is up and running. If selected, also do the following:



Enter a host name in the corresponding Hostname field

Specify Ethernet Port (Both, Eth1 or Eth2)

Check IPv6 if... need text.

This option sends an Ethernet packet out one of the Ethernet ports, mainly as a network connectivity test. For UDP, the number of times the string is sent is equal to the number of packets sent. For TCP, the number of times the string is sent may (or may not) be equal to the number of packets sent, because TCP controls how data is packetized and sent out. Enter the following:



Protocol: Select the type of packet to send (TCP or UDP).

Hostname: Specify a host name or IPaddress of the host to send the packet to.

Port: Specify a TCP or UDP port number of the host to send the packet to.

String: Enter a set of up to 64 characters. The string is encapsulated in the packet (so you could use a network sniffer to track the packet and, by looking at its contents, verify that it was sent).

Count: The count is the number of times the string is sent.

Specify loopback information:



Device Port

Select either an Internal or External test

Select to display information on the internal memory, storage and processes of the SLC unit.

Click the Run Diagnostics button. The

Diagnostics Report page displays.

Figure 13-8 Diagnostics Report

To email this report, follow the instructions in

Emailing Logs and Reports (on page 236)

Diagnostic Commands

The following CLI commands correspond to the web page entries described above.

To display the ARP table of IP address-to-hardware address mapping: diag arp [email <Email Address>]

SLC™ Console Manager User Guide 231

13: Maintenance

You can optionally email the displayed information.

To display a report of network connections: diag netstat [protocol <all|tcp|udp>] [email <Email Address>]

You can optionally email the displayed information.

To resolve a host name into an IP address: diag lookup <Hostname> [email <Email Address>]

You can optionally email the displayed information.

To test a device port by transmitting data out the port and verifying that it is received correctly: diag loopback <Device Port Number or Name>[<parameters>]

Parameters: test <internal|external> xferdatasize <Size In Kbytes to Transfer>

Default is 1 Kbyte.

Note: A special loopback cable comes with the SLC unit. To test a device port, plug the cable into the device port and run this command. The command sends the specified

Kbytes to the device port and reports success or failure. The test is performed at 9600 baud. Only an external test requires a loopback cable.

To display the route that packets take to get to a network host: diag traceroute <IP Address or Hostname>

To verify that the host is up and running: diag ping <IP Address or Name> [<parameters>]

Parameters: count <Number of Times to Ping>

The default is 5.

packetsize <Size in Bytes>

The default is 64.

To display performance statistics for an Ethernet port or a device port (averaged over the last 5 seconds): diag perfstat [ethport <1|2>] [deviceport <Device Port # or Name>]

To generate and send Ethernet packets: diag sendpacket host <IP Address or Name> port <TCP or UDP Port Number>

[string <Packet String>] [protocol <tcp|udp>] [count <Number of

Packets>]

SLC™ Console Manager User Guide 232

13: Maintenance

The default is 1.

To display all network traffic, applying optional filters:

Note: This command is not available on the web interface. diag nettrace <one or more parameters>

Parameters: ethport <1|2> host <IP Address or Name> numpackets <Number of Packets> protocol <tcp|udp|icmp> verbose <enable|disable>

To display information on the internal memory, storage and processes of the SLC unit: diag internals [email <Email Address>]

Note: This command is available the web interface as SLC Internals under

Maintenance > Diagnostics.