3Com Router User Manual

Establish Configuration Environment17
Figure 8   Establish a dial-up connection via “HyperTerminal”
Figure 9   Dial on remote computer
4If a dial-up connection is established, then press Enter after the self-test to display 
the prompt “Username:” and “password:”. Enter the correct username and the 
password, then enter the system view of Router.
5Enter command to configure the router or view running status of the router. Enter 
? to get help when necessary. For details of specific commands, please refer...

18CHAPTER 2: 3COM ROUTER USER INTERFACE
configuration environment, connect the computer with the router via the WAN 
interface.
Figure 10   .Establish configuration environment of local telnet connection
Figure 11   Establish a configuration environment of a remote telnet connection 
2As shown in the following two figures (Telnet client program interface in Windows 
9X), run the Telnet client program on the computer and set its terminal emulation 
type as VT100.
Ethernet
Server
Workstation
Work station...

Command Line Interface (CLI)19
Figure 12   Run a telnet program
Figure 13   Establish a telnet connection with router
The host name in the above figure is the name or IP address of a router interface 
of the remote connection.
3If connection is established, press Enter after the self-test to display the prompt 
“Username:” and “password:”. Enter the correct username and the password, 
then enter the system view of the router. If the prompt of 
Too many users! 
appears, try to connect later. Usually,...

20CHAPTER 2: 3COM ROUTER USER INTERFACE
■Provide online help any time the user keys in “?”.
■Provide network test commands, such as tracert and ping, etc. to quickly 
diagnose whether the network is normal.
■Provide rich and detailed debugging information for diagnosis of network 
faults.
■Use telnet command to directly log in and manage other routers
■Support TFTP service, convenient for users to upload or download the 3Com 
Router main program files and configuration files.
■Provide FTP service,...

Command Line Interface (CLI)21
Figure 14   Hierarchical view structure of the 3Com Router
The following table gives some details of the functionality features of the 
command views as well as the commands for entering these views.
System viewTa b l e 4   Views and their prompts
System view
RIP view
OSPF view
BGP view 
Routing policy view
PIM view
Sync serial interface view
Ethernet  interface view
Async serial interface view
CE1 interface view
……
L2TP group view
IPSec proposal view
IPSec policy view
IKE...

22CHAPTER 2: 3COM ROUTER USER INTERFACE
async serial 
interface viewConfigures the 
asynchronous serial 
interface parameters[Router-Async0]Enter interface 
async 0 in any 
viewsEnter quit to return 
to the system view
AUX interface 
viewConfigures the AUX 
interface parameters[Router-Aux0]Enter interface 
aux 0 in any viewsEnter quit to return 
to the system view
AM interface 
viewConfigures the AM 
interface parameters[Router-AM0]Enter interface 
am 0 in any viewsEnter quit to return 
to the system...

Command Line Interface (CLI)23
The command line prompt character consists of the network device name (Router 
by default) and the command view name, such as [Router-rip].
The commands are divided according to view. In general, in a certain view, only 
the commands defined by the view can be executed, but some widely used 
commands (including 
ping, display, debugging, reset, save, interface, 
logic-channel, and controller) can be executed in all views
For some views listed in the above table, you must...

24CHAPTER 2: 3COM ROUTER USER INTERFACE
■The help information obtained via the above-mentioned online help is 
described as follows:
1Full help: Enter “?” in any view, all the commands in this view and their brief 
descriptions can be obtained.
[Router]?
aaa-enable Enable AAA(Authentication, Authorization and Accounting)
acl Specifystructure of access-list configure information
arp Add a ARP entry 
bgp Enable/disable BGP protocol 
bridge Bridge Set 
clock Set system clock 
copy Copy config or system file...

Command Line Interface (CLI)25
History CommandThe command line interface of the 3Com Router 1.x provides a function similar to 
DOSKey by automatically saving the history of commands inputted users. Users 
can check the history of commands saved in the command line to repeat 
execution. 10 history commands can be saved at the most for each user. The 
configuration steps are shown in the following two tables.
1Display history command
The following command can be used in all views to display the command...

26CHAPTER 2: 3COM ROUTER USER INTERFACE
Ta b l e 9   Display function table
User Identity 
ManagementThe 3Com Router sets three kinds of router management users: administrator 
user, operator user and guest user. Different kinds of users have different rights to 
execute commands.
1An administrator user has the right to execute all the commands of the router. 
Only the administrator user can configure all the functions and parameters and 
can enter all views.
2An operator user can monitor and maintain...