Contacting Technical Support; Troubleshooting Ethernet Interfaces; Failure To Ping The Directly Connected Device; Symptom - H3C MSR Series Troubleshooting Manual

Contacting technical support

If you cannot resolve a problem by using the troubleshooting procedures in this document, contact
H3C Support. When you contact an authorized H3C support representative, be prepared to provide
the following information:
•
Information described in
•
Product serial numbers.
This information will help the support engineer assist you as quickly as possible.
The following is the contact of H3C Support:
•
Telephone number—400-810-0504.
•
E-mail—service@h3c.com.

Troubleshooting Ethernet interfaces

This section provides troubleshooting information for common problems with Ethernet interfaces.

Failure to ping the directly connected device

Symptom

An Ethernet interface cannot ping the directly connected device.

Solution

To resolve the problem:
Execute the display interface command and perform the following tasks:
1.
Verify that the interface is up.
Verify that the speed and duplex mode of the local end match the speed and duplex mode of
the peer end.
Verify that the cable and interface are operating correctly by viewing the packet statistics of
the interface.
Verify that the transceiver module of the local end matches the transceiver module of the
peer end if the interface is a fiber port.
Use the display arp command to verify that the interface can receive ARP packets sent by
2.
the directly connected device. If not, use the debugging arp packet command to verify that
the interface can send and receive ARP packets correctly.
Use the debugging ip packet command to verify that the interface can send and receive
3.
packets correctly.
Use the debugging ip icmp command to verify that the interface can send and receive ICMP
4.
packets correctly.
Collect the following information for the interface:
5.
Execute the display hardware internal module interface-name interface-number
statistics command in probe view to collect the interface statistics.
Execute the display hardware internal module interface-name interface-number
status command in probe view to collect the status information.
"General guidelines."
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