Ping através do túnel VPN

Ping através do túnel VPN

Construí um túnel VPN entre uma rede virtual do Azure e um roteador Cisco 881. Tenho uma máquina virtual na rede virtual do Azure, mas o roteador não consegue fazer ping na máquina virtual. Além disso, o roteador não consegue executar ping na máquina virtual. Então, se alguém puder me ajudar a descobrir o que estou perdendo, seria ótimo! Aqui estão as configurações.

interface Tunnel1
 ip address 169.254.0.1 255.255.255.0
 ip tcp adjust-mss 1350
 tunnel source FastEthernet4
 tunnel mode ipsec ipv4
 tunnel destination 104.215.95.202
 tunnel protection ipsec profile vti
!
interface FastEthernet4
 description Interface_to_3rd_party_ISP
 ip address 97.105.10.190 255.255.255.252
 ip nat outside
 ip virtual-reassembly in
 duplex auto
 speed auto
!
interface Vlan1
 description Management_interface
 ip address 10.0.0.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly in
!
ip route 0.0.0.0 0.0.0.0 97.105.10.189
ip route 172.16.0.0 255.255.255.0 Tunnel1
!
access-list 1 permit 192.168.251.0 0.0.0.255
access-list 1 permit 24.173.194.0 0.0.0.255
access-list 101 permit ip 10.0.0.0 0.0.0.255 172.16.0.0 0.0.0.255

Espero que isso seja informação suficiente para alguém me ajudar a descobrir por que não consigo fazer ping. O IP da VM que estou tentando fazer ping é 172.16.0.4.

Obrigado!

Estou adicionando alguns comandos show conforme solicitado.

sh interfaces tunnel 1
Tunnel1 is up, line protocol is up
  Hardware is Tunnel
  Internet address is 169.254.0.1/24
  MTU 17878 bytes, BW 100 Kbit/sec, DLY 50000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation TUNNEL, loopback not set
  Keepalive not set
  Tunnel source 97.105.10.190 (FastEthernet4), destination 104.215.95.202
   Tunnel Subblocks:
      src-track:
         Tunnel1 source tracking subblock associated with FastEthernet4
          Set of tunnels with source FastEthernet4, 1 member (includes iterators                                                                                                                                                             ), on interface <OK>
  Tunnel protocol/transport IPSEC/IP
  Tunnel TTL 255
  Tunnel transport MTU 1438 bytes
  Tunnel transmit bandwidth 8000 (kbps)
  Tunnel receive bandwidth 8000 (kbps)
  Tunnel protection via IPSec (profile "vti")
  Last input never, output never, output hang never
  Last clearing of "show interface" counters 1d17h
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 73
  Queueing strategy: fifo
  Output queue: 0/0 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     1061 packets input, 33976 bytes, 0 no buffer
     Received 0 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     79 packets output, 5631 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out

sh crypto isakmp sa
IPv4 Crypto ISAKMP SA
dst             src             state          conn-id status

IPv6 Crypto ISAKMP SA

sh crypto ipsec sa
interface: Tunnel1
    Crypto map tag: Tunnel1-head-0, local addr 97.105.10.190

   protected vrf: (none)
   local  ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
   remote ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/0/0)
   current_peer 104.215.95.202 port 500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 6, #pkts encrypt: 6, #pkts digest: 6
    #pkts decaps: 1065, #pkts decrypt: 1065, #pkts verify: 1065
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0
    #pkts not decompressed: 0, #pkts decompress failed: 0
    #send errors 0, #recv errors 0

     local crypto endpt.: 97.105.10.190, remote crypto endpt.: 104.215.95.202
     plaintext mtu 1438, path mtu 1500, ip mtu 1500, ip mtu idb FastEthernet4
     current outbound spi: 0xD77E621E(3615384094)
     PFS (Y/N): N, DH group: none

     inbound esp sas:
      spi: 0xF41C8A8E(4095511182)
        transform: esp-256-aes esp-sha-hmac ,
        in use settings ={Tunnel, }
        conn id: 422, flow_id: Onboard VPN:422, sibling_flags 80000040, crypto map: Tunnel1-head-0
        sa timing: remaining key lifetime (k/sec): (4228180/3545)
        IV size: 16 bytes
        replay detection support: Y
        Status: ACTIVE(ACTIVE)

     inbound ah sas:

     inbound pcp sas:

     outbound esp sas:
      spi: 0xD77E621E(3615384094)
        transform: esp-256-aes esp-sha-hmac ,
        in use settings ={Tunnel, }
        conn id: 421, flow_id: Onboard VPN:421, sibling_flags 80000040, crypto map: Tunnel1-head-0
        sa timing: remaining key lifetime (k/sec): (4228181/3545)
        IV size: 16 bytes
        replay detection support: Y
        Status: ACTIVE(ACTIVE)

     outbound ah sas:

     outbound pcp sas:

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