Estoy intentando configurar BGP sobre IPSEC con Google Cloud Platform. El túnel IPSEC se establece correctamente y GCP informa que la sesión BGP está activa. El enrutador EdgeMax recibe las rutas, pero no las inyecta en el RIB.
dan@router:~$ show ip bgp neighbors 169.254.0.1 received-routes
BGP table version is 7, local router ID is 169.254.0.2
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.142.0.0/20 169.254.0.1 100 0 65000 ?
Total number of prefixes 1
dan@router:~$ show ip route
Codes: K - kernel, C - connected, S - static, R - RIP, B - BGP
O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
> - selected route, * - FIB route, p - stale info
IP Route Table for VRF "default"
S *> 0.0.0.0/0 [210/0] via 71.186.153.1, eth0
C *> <external address> is directly connected, eth0
C *> 127.0.0.0/8 is directly connected, lo
C *> 169.254.0.0/30 is directly connected, vti0
S *> 169.254.0.1/32 [1/0] is directly connected, vti0
C *> 192.168.0.0/24 is directly connected, eth1
S *> 192.168.42.0/24 [1/0] via 192.168.0.29, eth1
Inicialmente, la ID del enrutador local era la dirección de una interfaz que había eliminado, así que la actualicé para que sea 169.254.0.2, pero eso no ayudó.
Mi registro se ve así, repetido cada pocos segundos:
Feb 20 16:01:30 router BGP[1679]: BGP-6: [RIB] Scanning BGP Network Routes...
Feb 20 16:01:38 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [FSM] Keep-alive-Timer Expiry
Feb 20 16:01:38 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [FSM] State: Established Event: 11
Feb 20 16:01:38 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [ENCODE] Msg-Hdr: Type 4
Feb 20 16:01:38 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [ENCODE] Keepalive: 806 KAlive msg(s) sent
Feb 20 16:01:41 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [FSM] AS-Origination Timer Expiry
Feb 20 16:01:41 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [FSM] State: Established Event: 33
Feb 20 16:01:41 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [DECODE] Msg-Hdr: type 4, length 19
Feb 20 16:01:41 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [DECODE] Msg-Hdr: Requesting immediate Read (0)
Feb 20 16:01:41 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [DECODE] KAlive: Received!
Feb 20 16:01:41 router BGP[1679]: BGP-6: 169.254.0.1-Outgoing [FSM] State: Established Event: 26
La configuración completa está aquí:https://gist.github.com/danellis/82b471665cbe3fb7e8d788e03b8ab257
Con suerte, solo me falta una pequeña cosa. ¿Alguien puede ver qué es?
Respuesta1
Creo que necesitas habilitar el valor de ruta múltiple de ebgp de 4
Aquí te adjunto una configuración que te podría ayudar:
$ show protocols bgp
bgp 65501 {
neighbor 10.1.255.254 {
ebgp-multihop 4
remote-as 65515
soft-reconfiguration {
inbound
}
update-source 10.0.1.1
}
parameters {
no-fast-external-failover
router-id 10.0.1.1
}
redistribute {
connected {
}
}
timers {
holdtime 180
keepalive 60
}
}