> For the complete documentation index, see [llms.txt](https://doc.i4e.com.bd/isp/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.i4e.com.bd/isp/configuracion_basica_de_la_red/fase1_gns3.md).

# Phase 1

In this section we will see the network topography scheme with gns3 according to phase 1, and how the main router configuration remains.

![topografía de red con gns3](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-c1914f6d0cbb36fe4efc5bd8a560d1a69b53249a%2Ffase1gns3.PNG?alt=media)

IP addresses of the different configured interfaces and bridges.

![Direccionamiento](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-a2549dc5405681dd2b56f52b4488e66c25c6eda9%2Fdirecciones.PNG?alt=media)

Interfaces, vlans and bridges with names to which they are configured.

![Interfaces definidas](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-d457933da217d31eccbb41ea67bf8bb757dabf9f%2Finterfaces.PNG?alt=media)

Dhcp client for the WAN that receives the IP from an ISP which in this case is the home router.

![dhcp cliente](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-5b3057d72afef98a32f4914b915d217082c4f3d6%2Fdhcpcliente.PNG?alt=media)

Dhcp server for bridges.

![Dhcp server bridges](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-6a4d53c680590870edb354eacaf99d025ab9afdf%2Fdhcpserver.PNG?alt=media)

Dhcp server with networks, gateway and dns.

![Dhcp server Network](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-1092c08070593b86f9c6a1c08b5805cfad906485%2Fdhcpserverredes.PNG?alt=media)

Dhcp server with the leased ip's.

![Dhcp server Leases](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-5fcbf626c0ce2d9e1e816da9b24c775b3bf096d6%2Fdhcpserverarrendada.PNG?alt=media)

DNS.

![DNS](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-1e9c53655a452539b9ab86f1f692870e675f74c3%2Fdns.PNG?alt=media)

List of routes.

![Route List](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-908f284c220facd0fa750a7d5d7dc5e780dccf7b%2Flista_de_rutas.PNG?alt=media)

Configuration of the ports of the bridges where it is observed with which vlan and interfaces are bridged.

![Bridges Ports](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-416c9cff01992e0ee4b7d8381753f8f7b328a5af%2Fbridgesports.PNG?alt=media)

Nat configuration by Firewall.

![Firewall NAT](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-30099341b5470772a0ece6609e63d77202f0f2e8%2Ffirewallnat.PNG?alt=media)

Firewall rules.

![Firewall Rules](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-1b273dea933a13cf0ed112d51d6ffa1eefb02d0f%2Ffirewallreglas.PNG?alt=media)

Tunnel policies by IPsec.

![IPsec Policies](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-069701fe5f58d82b05f2fe608332397bce7c4f0e%2FIPsecpolitica.PNG?alt=media)

Neighbors who are active because of the tunnel created.

![Ipsec Active Peers](https://4165164720-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MZZSeMxvs4wzzRo1xzm%2Fuploads%2Fgit-blob-fd26947dff2b8f5cf6b6d386fa0592dadf703ceb%2Fipsecvecinoactivo.PNG?alt=media)