3Com Switch 7750 Configuration Guide Guide

124 CHAPTER 14: IP ADDRESS CONFIGURATION
Displaying IP Address
Configuration
After the above configuration, you can execute the display command in any view
to display the operating status and configuration on the interface to verify your
configuration.
IP Address
Configuration
Example
Network requirements
Set the IP address and subnet mask of VLAN interface 1 to 129.2.2.1 and
255.255.255.0 respectively.
Network diagram
Figure 35 IP address configuration
Configuration procedure
# Configure an IP address for VLAN interface 1.
<SW7750> system-view
[SW7750] interface Vlan-interface 1
[SW7750-Vlan-interface1] ip address 129.2.2.1 255.255.255.0
Troubleshooting Symptom: The switch cannot ping the host directly-connected to a port.
Solution: You can perform troubleshooting as follows:
■ Check the configuration of the switch, and then use the display arp
command to check whether the host has an corresponding ARP entry in the
ARP table maintained by the Switch.
■ Check the VLAN that includes the switch port connecting the host. Check
whether the VLAN has been configured with the VLAN interface. Then check
whether the IP addresses of the VLAN interface and the host are on the same
network segment.
■ If the configuration is correct, enable ARP debugging on the switch, and check
whether the switch can correctly send and receive ARP packets. If it can only
send but cannot receive ARP packets, errors may occur at the Ethernet physical
layer.
Tabl e 67 Display IP address configuration
Operation Command Description
Display VLAN interface
information
display ip interface [ brief ]
[ interface-type
interface-number ]
You can execute the display
command in any view
Console cable
Sw itc h
PC
Console cable
Sw itc h
PC