ticket TT06

Enviado por mikedenofte el Jue, 02/11/2017 - 15:55
ticket TT06

Requisito: Verifique conectividad utilizando

S3G#ping 2001:cafe:1::1 source 2001:acad:100::1

el problema en este ejercicio se origina en dmvpn ya que no hay conectividad en sus 3 puntos, esto se debe a que en el router ISP no existe la ruta ipv4 por defecto que apunta hacia S3A

ISP#sh ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, 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
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       + - replicated route, % - next hop override

Gateway of last resort is not set is variably subnetted, 2 subnets, 2 masks
C is directly connected, GigabitEthernet0/0
L is directly connected, GigabitEthernet0/0 is subnetted, 1 subnets
B [20/0] via, 00:18:40 is variably subnetted, 2 subnets, 2 masks
C is directly connected, GigabitEthernet1/0
L is directly connected, GigabitEthernet1/0 is variably subnetted, 2 subnets, 2 masks
C is directly connected, GigabitEthernet2/0
L is directly connected, GigabitEthernet2/0

por ende, tampoco se encuentra la ruta en BGP

ISP#sh ip bgp top *
For address family: IPv4 Unicast

BGP table version is 2, local router ID is
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
              x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found

     Network          Next Hop            Metric LocPrf Weight Path
 *>                0             0 100 i

La solucion seria:

ISP(config)#ip route
ISP(config)#router bgp 200
ISP(config-router)#network mask
S3G#ping 2001:cafe:1::1 sou 2001:acad:100::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:CAFE:1::1, timeout is 2 seconds:
Packet sent with a source address of 2001:ACAD:100::1
Success rate is 100 percent (5/5), round-trip min/avg/max = 216/225/244 ms