61. Default Routing Practical in Cisco Packet Tracer | Routing | CCNA 200-301 in Hindi | Part - 3
Default routing is a common practice in networking, particularly in scenarios where a router needs to forward packets for destinations that are not explicitly listed in its routing table. It's often used when a router doesn't have specific routes for all possible destinations but needs to forward packets to a default gateway, usually another router or a firewall.
Here's a practical example of setting up default routing in Cisco Packet Tracer:
1. **Setup**:
Open Cisco Packet Tracer and create a new network topology.
Add two routers (Router0 and Router1) and two PCs.
Connect the routers using serial DCE/DTE cables, and connect each PC to a router using Ethernet cables.
2. **Configuration**:
Configure IP addresses for each interface on the routers and PCs.
```
Router0:
Interface FastEthernet0/0: 192.168.1.1 255.255.255.0
Interface Serial0/0/0: 10.0.0.1 255.255.255.252
Router1:
Interface FastEthernet0/0: 192.168.2.1 255.255.255.0
Interface Serial0/0/0: 10.0.0.2 255.255.255.252
PC0:
IP Address: 192.168.1.2
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.1
PC1:
IP Address: 192.168.2.2
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.2.1
```
Enable routing on both routers:
```
Router0:
Router(config)#ip routing
Router1:
Router(config)#ip routing
```
Configure default routes:
```
Router0:
Router(config)#ip route 0.0.0.0 0.0.0.0 10.0.0.2
Router1:
Router(config)#ip route 0.0.0.0 0.0.0.0 10.0.0.1
```
3. **Testing**:
Test connectivity between PC0 and PC1 by pinging their respective IP addresses.
Test connectivity from PC0 to PC1 by pinging PC1's IP address. The traffic should be routed through the default gateway (Router0) to reach PC1 via Router1.
This setup demonstrates how default routing works in Cisco Packet Tracer. The default routes configured on each router ensure that any packets with destinations not explicitly defined in the routing table are forwarded to the specified default gateway.
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