how to configured two routers cisco 2620 with console cable with ip routing steps

 how to configured two routers cisco 2620 with console cable with ip routing steps

Configure Two Cisco 2620 Routers with IP Routing (Step-by-Step)

This guide explains how to configure two Cisco 2620 Router routers using console access and enable IP routing between them.

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Network Topology

Example setup:

PC1 ---- Router1 ===== Router2 ---- PC2
          Fa0/0       Serial        Fa0/0

IP Address Plan

Device	Interface	IP Address	Subnet Mask
Router1	FastEthernet0/0	192.168.1.1	255.255.255.0
Router1	Serial0/0	10.0.0.1	255.255.255.252
Router2	Serial0/0	10.0.0.2	255.255.255.252
Router2	FastEthernet0/0	192.168.2.1	255.255.255.0

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Required Cables

1. Console cable (rollover cable)

2. Serial DCE/DTE cable

3. Ethernet cable

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Step 1: Connect Console Cable

1. Connect console cable from PC to Router1 console port.

2. Open terminal software:

   • PuTTY

   • Tera Term

   • HyperTerminal

Terminal Settings

Speed (Baud Rate): 9600
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None

Press Enter to access router CLI.

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Step 2: Configure Router1

Enter these commands on Router1:

enable
configure terminal

hostname Router1

interface fastethernet0/0
ip address 192.168.1.1 255.255.255.0
no shutdown
exit

interface serial0/0
ip address 10.0.0.1 255.255.255.252
clock rate 64000
no shutdown
exit

ip route 192.168.2.0 255.255.255.0 10.0.0.2

end
write memory

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Step 3: Configure Router2

Enter these commands on Router2:

enable
configure terminal

hostname Router2

interface fastethernet0/0
ip address 192.168.2.1 255.255.255.0
no shutdown
exit

interface serial0/0
ip address 10.0.0.2 255.255.255.252
no shutdown
exit

ip route 192.168.1.0 255.255.255.0 10.0.0.1

end
write memory

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Step 4: Configure PCs

PC1

IP Address: 192.168.1.10
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.1

PC2

IP Address: 192.168.2.10
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.2.1

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Step 5: Verify Connection

Check Interfaces

Use:

show ip interface brief

You should see:

Interface        IP-Address      Status
Fa0/0            192.168.1.1    up
Serial0/0        10.0.0.1       up

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Step 6: Test Routing

From Router1:

ping 10.0.0.2

From PC1:

ping 192.168.2.10

If replies are received, routing is working.

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Important Notes

• Apply clock rate 64000 only on the DCE serial side.

• Use no shutdown to activate interfaces.

• Save configuration using:

write memory

or

copy running-config startup-config

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Useful Verification Commands

show running-config
show ip route
show controllers serial0/0
show interfaces

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Simple Routing Formula

\text{Destination Network} \rightarrow \text{Next Hop Router}

Example:

192.168.2.0 → 10.0.0.2

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Troubleshooting Tips

Problem	Solution
Interface down	Use no shutdown
Serial link down	Check DCE/DTE cable
Cannot ping	Verify IP routes
Wrong gateway	Check PC gateway settings
Configuration lost	Save using write memory

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Final Result

After configuration:

• Router1 and Router2 communicate through serial cable

• PCs on different networks can ping each other

• Static routing works successfully on Cisco 2620 routers

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