Escenario BGP Red ISP con Juniper

Nota

En este post se representara un escenario donde simulamos que redes de internet se estan comunicando con una red ISP a través de un Carrier. Los prefijos y ASN utilizados son solo para emular el laboratorio generado en eve-ng

Se pretende llegar al siguiente Diagrama

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Nota

Si el juniper esta buscando conectarse por DHCP eliminar la interfaz de DCHCP con:

delete chassis auto-image-upgrade

commit

Nota

Se debe configurar la contraseña y el nombre del juniper para que al aplicar commit se permita correctamente



configure



set system root-authentication plain-text-password



set system host-name NOMBREDELRB



commit

Configuracion Router FACEBOOK



configure



set system host-name FACEBOOK



set interfaces ge-0/0/0 unit 0 family inet address 10.10.13.1/24

set interfaces ge-0/0/1 unit 0 family inet address 1.1.1.5/24



set routing-options autonomous-system 100



set policy-options policy-statement EXPORT term RED1 from route-filter 1.1.1.0/24 exact

set policy-options policy-statement EXPORT term RED1 then accept



set protocols bgp group ASN300 type external

set protocols bgp group ASN300 peer-as 300

set protocols bgp group ASN300 neighbor 10.10.13.2

set protocols bgp group ASN300 export EXPORT

Nota

Para ver la configuraciÃ³n de los comandos agregados utilizamos: show configuration | display set

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Configuracion Router GOOGLE





configure



set system host-name GOOGLE



set interfaces ge-0/0/0 unit 0 family inet address 2.2.2.1/24

set interfaces ge-0/0/1 unit 0 family inet address 8.8.8.2/24



set routing-options autonomous-system 200



set policy-options policy-statement EXPORT term RED2 from route-filter 2.2.2.0/24 exact

set policy-options policy-statement EXPORT term RED2 then accept



set policy-options policy-statement EXPORT term RED8 from route-filter 8.8.8.0/24 exact

set policy-options policy-statement EXPORT term RED8 then accept



set protocols bgp group ASN300 type external

set protocols bgp group ASN300 peer-as 300

set protocols bgp group ASN300 neighbor 2.2.2.2

set protocols bgp group ASN300 export EXPORT



commit

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Configuracion ALESTRA



configure



set system host-name ALESTRA



set interfaces ge-0/0/0 unit 0 family inet address 10.10.13.2/24

set interfaces ge-0/0/1 unit 0 family inet address 2.2.2.2/24

set interfaces ge-0/0/2 unit 0 family inet address 3.3.3.1/24



set routing-options autonomous-system 300



set policy-options policy-statement EXPORT term RED3 from route-filter 3.3.3.0/24 exact

set policy-options policy-statement EXPORT term RED3 then accept



set protocols bgp group ASN100 type external

set protocols bgp group ASN100 peer-as 100

set protocols bgp group ASN100 neighbor 10.10.13.1



set protocols bgp group ASN200 type external

set protocols bgp group ASN200 peer-as 200

set protocols bgp group ASN200 neighbor 2.2.2.1



set protocols bgp group ASN400 type external

set protocols bgp group ASN400 peer-as 400

set protocols bgp group ASN400 neighbor 3.3.3.2



set protocols bgp group ASN100 export EXPORT

set protocols bgp group ASN200 export EXPORT

set protocols bgp group ASN400 export EXPORT



commit

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Configuracion ISP-BORDE





configure



set system host-name ISP-BORDE



set interfaces ge-0/0/0 unit 0 family inet address 3.3.3.2/24

set interfaces ge-0/0/1 unit 0 family inet address 4.4.5.254/24



set routing-options autonomous-system 400



set routing-options static route 192.168.9.0/24 next-hop 4.4.5.2



set policy-options policy-statement EXPORT term RED4 from route-filter 4.4.5.0/22 exact

set policy-options policy-statement EXPORT term RED4 then accept



set policy-options policy-statement EXPORT term LAN from route-filter 192.168.9.0/24 exact

set policy-options policy-statement EXPORT term LAN then accept



set protocols bgp group ASN300 type external

set protocols bgp group ASN300 peer-as 300

set protocols bgp group ASN300 neighbor 3.3.3.1

set protocols bgp group ASN300 export EXPORT



commit

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Configuracion Mikrotik ISP-CORE





/ip address

add address=4.4.5.2/24 interface=ether1



add address=192.168.9.254/24 interface=ether8



/ip route

add dst-address=0.0.0.0/0 gateway=4.4.5.254

Nota

Importante: Desabilitar el DHCP-CLIENT para que no haga conflicto con el default route del BGP y se pueda dar el ping correctamente

Servidor (PC) FACEBOOK



IP: 1.1.1.6

Mascara: 255.255.255.0

Gateway: 1.1.1.5

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Servidor (PC) GOOGLE



IP: 8.8.8.8

Mascara: 255.255.255.0

Gateway: 8.8.8.2

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PC Cliente Final



IP: 192.168.9.2

Mascara: 255.255.255.0

Gateway: 192.168.9.254

DNS: 8.8.8.8