Connect Cisco Router and Switch to ISP Home Router and Access Internet

Cisco Config・2 minutes read

Abdul Basid demonstrates connecting a Cisco router and switch to create VLANs for internet access, configuring interfaces, assigning IP addresses, setting up static routes, and testing internet connectivity through ping commands and browsing popular websites like bbc.com and facebook.com. Multiple VLANs with DHCP pools are created, access lists are configured, and settings are saved to ensure the functionality of the network setup, showcasing successful internet browsing on a laptop connected to the configured VLANs on the Cisco switch.

Insights

  • Abdul Basid demonstrates connecting a Cisco router and switch to an ISP router for internet access, showcasing the importance of proper network configuration for seamless connectivity.
  • The detailed setup process involves configuring interfaces, creating VLANs, setting up static routes, enabling inter-VLAN routing, and testing the network by pinging external websites, emphasizing the thoroughness required in establishing a functional network infrastructure.

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Recent questions

  • How is a Cisco router connected to an ISP router?

    By connecting the ISP router's LAN port to the Cisco 2800 router's first Ethernet 0/0 port.

  • What are the key features of a Cisco 2800 series router?

    Power input, console and auxiliary ports, USB ports, and a compact flash card for configuration storage.

  • How is a Cisco switch configured for VLANs?

    By creating multiple VLANs with specific names and interfaces assigned.

  • What is the process for testing internet connectivity on a Cisco router?

    By pinging the ISP router's gateway and external websites like bbc.com.

  • How are configurations saved on a Cisco router and switch?

    By using the command "copy running config startup config".

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Summary

00:00

"Connecting Cisco Router and Switch for Internet"

  • Abdul Basid, a Cisco CCNA CCNP certified engineer, demonstrates connecting a Cisco router and switch to a home ISP router for internet access.
  • The Cisco 2800 series router features power input, console and auxiliary ports, USB ports, and a compact flash card for configuration storage.
  • The back interface of the Cisco router includes RJ45 ports for connecting to the ISP and switch, along with analog ports for phone lines.
  • The Cisco 3550 switch has 48 fast Ethernet ports and an optical interface for SFP cards to create an optical network.
  • The network topology involves connecting the ISP router to the Cisco 2800 router and the Cisco 3550 switch to create VLANs for internet access.
  • The ISP router's LAN port connects to the Cisco 2800 router's first Ethernet 0/0 port, while the router's first Ethernet 0/1 port connects to the switch's fast Ethernet 0/48 port.
  • IP network scheme includes the ISP router at 192.168.1.1, the router's first Ethernet 0/0 at 192.168.1.2, and the switch's fast Ethernet 0/48 at 192.168.1.102.
  • Configuring the Cisco router involves enabling, factory resetting, changing the hostname, assigning IP addresses to interfaces, setting up static routes, and configuring DNS servers.
  • To log in to the Cisco router, a console cable is used with network emulator software like PuTTY, and commands are entered to configure interfaces and routes.
  • The setup is tested by pinging the ISP router's gateway and external websites like bbc.com to ensure successful internet connectivity.

18:17

Configuring Router and Switch for Network Connectivity

  • The internet connection is confirmed to be working on the router by pinging facebook.com.
  • The switch needs to be connected to the router and configured.
  • Static routing needs to be configured on the router, along with creating an access list to permit specific subnets.
  • The console cable is moved from the router to the Cisco 3550 switch.
  • The switch is checked for existing configurations using commands like "show ip interface brief" and "show vlan".
  • Old configurations are deleted using commands like "erase startup config" and "delete flash vlan.dat".
  • The switch is reloaded, taking a few minutes to complete the restart cycle.
  • The switch is configured by changing the hostname, assigning IP addresses to interfaces, and forwarding traffic to the router.
  • Multiple VLANs are created on the switch, each with specific names and interfaces assigned.
  • IP addresses are assigned to each VLAN, and inter-VLAN routing is enabled using the "ip routing" command. DHCP pools are created for each VLAN to assign IP addresses automatically.

37:40

"Configuring Access List for Network Connectivity"

  • Configuration of access list named "1" to allow all traffic to fast ethernet 0/0 using the command "ip net inside" with the source list "1" created.
  • Saving the configuration in the router and switch using the command "copy running config startup config" to ensure all settings are retained.
  • Testing the setup by connecting a laptop to VLANs 10, 20, and 30 on a Cisco 3550 switch, obtaining IPs from DHCP pools, and successfully browsing the internet, showcasing the functionality of the configured network.
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