Ethernet Configuration Example - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Table 2-10 Display the state of a specified Ethernet interface
Display the state of a specified Ethernet
interface

2.1.4 Ethernet Configuration Example

I. Networking requirements
As shown in the following figure, the Ethernet interface on Router A is connected to the
IP network 192.168.0.0. The computers on the LAN are connected to the Internet via
Router A. Set the MTU on the Ethernet interface to 1492 bytes.
II. Networking diagram
LAN
Network Address
192.168.0.0
Figure 2-1 Networking diagram of Ethernet configuration example
III. Configuration procedure
# Assign the IP address 192.168.0.1 to Ethernet 0/0/0, given the mask is 255.255.0.0.
[3Com] interface ethernet 0/0/0
[3Com-Ethernet0/0/0] ip address 192.168.0.1 255.255.0.0
# Set the MTU on the interface to 1492 bytes.
[3Com-Ethernet0/0/0] mtu 1492
2.1.5 Troubleshooting
You can perform the following operations to determine the correctness of the Ethernet
interface.
Ping the Ethernet interface on the router from a host locating on the same LAN,
anticipating that all the packets can be correctly returned.
Look up the statistics of the connected two parties (router and switch for example),
anticipating that the received error frames have not rapidly increased.
If the test result of either item is incompliance with the anticipation, you can conclude
that the Ethernet interface or its connection is not properly working.
After confirming the existence of a fault, you can isolate it following these steps:
Operation
Interface Address
192.168.0.1
E0
Router A
3Com Corporation
2-7
Chapter 2 LAN Interface Configuration
Command
display interface
gigabitethernet } [ interface-number ]
Internet
{ ethernet |