how to configured two routers cisco 1841 telnet configuration steps
Configure Two Cisco 1841 Integrated Services Router Routers for Telnet Access
This example shows how to connect two Cisco 1841 routers and enable Telnet remote access between them.
Network Topology
PC1 ----- Router1 ===== Router2 ----- PC2
Serial Connection
Example IP Addressing:
| Device | Interface | IP Address |
|---|---|---|
| Router1 | FastEthernet0/0 | 192.168.1.1 /24 |
| Router1 | Serial0/0/0 | 10.0.0.1 /30 |
| Router2 | FastEthernet0/0 | 192.168.2.1 /24 |
| Router2 | Serial0/0/0 | 10.0.0.2 /30 |
Step 1: Connect the Routers
Use:
Console cable for initial configuration
Serial DCE/DTE cable between routers
Step 2: Configure Router1
Enter privileged mode:
enable
configure terminal
Configure hostname:
hostname Router1
Configure FastEthernet interface:
interface fastethernet0/0
ip address 192.168.1.1 255.255.255.0
no shutdown
exit
Configure Serial interface:
interface serial0/0/0
ip address 10.0.0.1 255.255.255.252
clock rate 64000
no shutdown
exit
Enable routing to Router2 network:
ip route 192.168.2.0 255.255.255.0 10.0.0.2
Step 3: Configure Telnet on Router1
Create username and password:
username admin password cisco123
Configure VTY lines:
line vty 0 4
login local
transport input telnet
password telnet123
exit
Set enable password:
enable secret class123
Save configuration:
copy running-config startup-config
Step 4: Configure Router2
enable
configure terminal
hostname Router2
Configure FastEthernet:
interface fastethernet0/0
ip address 192.168.2.1 255.255.255.0
no shutdown
exit
Configure Serial interface:
interface serial0/0/0
ip address 10.0.0.2 255.255.255.252
no shutdown
exit
Add static route:
ip route 192.168.1.0 255.255.255.0 10.0.0.1
Step 5: Configure Telnet on Router2
username admin password cisco123
line vty 0 4
login local
transport input telnet
password telnet123
exit
enable secret class123
Save configuration:
copy running-config startup-config
Step 6: Verify Connectivity
From Router1:
ping 10.0.0.2
From Router2:
ping 10.0.0.1
If replies are successful, Telnet should work.
Step 7: Test Telnet
From Router1:
telnet 10.0.0.2
From Router2:
telnet 10.0.0.1
Enter:
Username:
adminPassword:
cisco123
Useful Verification Commands
Check interfaces:
show ip interface brief
Check routing table:
show ip route
Check active Telnet users:
show users
Important Notes
clock rate 64000is required only on the DCE serial side.Telnet sends passwords in plain text.
For secure remote access, use SSH instead of Telnet.
Example Successful Output
Router1# telnet 10.0.0.2
Trying 10.0.0.2 ... Open
User Access Verification
Username: admin
Password:
Router2>