Check Vti To Vti

This scenario shows how to configure and route traffic via VTI (Virtual Tunnel Interface) devices.

../../../../_images/vtivti.svg

Test VTI To VTI

Description

A VTI device is configured in each end-point.

Scenario

Step 1: Set the following configuration in DUT0:

set vpn ipsec site-to-site peer PEER connection-type on-demand
set vpn ipsec site-to-site peer PEER vti local-prefix 10.0.0.1/32
set vpn ipsec site-to-site peer PEER vti remote-prefix 20.0.0.1/32
set vpn ipsec site-to-site peer PEER local-address 192.168.100.10
set vpn ipsec site-to-site peer PEER remote-address 192.168.100.20
set interfaces ethernet eth0 address 192.168.100.10/24
set interfaces vti vti0 address 10.0.0.1/32
set vpn ipsec auth-profile AUTH-SA local auth pre-shared-secret test
set vpn ipsec esp-group CHILD-SA proposal 1 encryption aes256gcm128
set vpn ipsec esp-group CHILD-SA proposal 1 pfs dh-group19
set vpn ipsec ike-group IKE-SA key-exchange ikev2
set vpn ipsec ike-group IKE-SA proposal 1 dh-group 19
set vpn ipsec ike-group IKE-SA proposal 1 encryption aes256gcm128
set vpn ipsec ike-group IKE-SA proposal 1 hash sha256
set vpn ipsec site-to-site peer PEER default-esp-group CHILD-SA
set vpn ipsec site-to-site peer PEER auth-profile AUTH-SA
set vpn ipsec site-to-site peer PEER ike-group IKE-SA
set interfaces vti vti0 ipsec PEER
set protocols static route 0.0.0.0/0 interface vti0

Step 2: Set the following configuration in DUT1:

set vpn ipsec site-to-site peer PEER connection-type initiate
set vpn ipsec site-to-site peer PEER vti local-prefix 20.0.0.1/32
set vpn ipsec site-to-site peer PEER vti remote-prefix 10.0.0.1/32
set vpn ipsec site-to-site peer PEER local-address 192.168.100.20
set vpn ipsec site-to-site peer PEER remote-address 192.168.100.10
set interfaces ethernet eth0 address 192.168.100.20/24
set interfaces vti vti0 address 20.0.0.1/32
set vpn ipsec auth-profile AUTH-SA local auth pre-shared-secret test
set vpn ipsec esp-group CHILD-SA proposal 1 encryption aes256gcm128
set vpn ipsec esp-group CHILD-SA proposal 1 pfs dh-group19
set vpn ipsec ike-group IKE-SA key-exchange ikev2
set vpn ipsec ike-group IKE-SA proposal 1 dh-group 19
set vpn ipsec ike-group IKE-SA proposal 1 encryption aes256gcm128
set vpn ipsec ike-group IKE-SA proposal 1 hash sha256
set vpn ipsec site-to-site peer PEER default-esp-group CHILD-SA
set vpn ipsec site-to-site peer PEER auth-profile AUTH-SA
set vpn ipsec site-to-site peer PEER ike-group IKE-SA
set interfaces vti vti0 ipsec PEER
set protocols static route 0.0.0.0/0 interface vti0

Step 3: Run command vpn ipsec show sa at DUT0 and check if output contains the following tokens:

ESTABLISHED
Show output
vpn-peer-PEER: #1, ESTABLISHED, IKEv2, 59a053e3b232fd43_i 83a1647ebe30e358_r*
  local  '192.168.100.10' @ 192.168.100.10[500]
  remote '192.168.100.20' @ 192.168.100.20[500]
  AES_GCM_16-256/PRF_HMAC_SHA2_256/ECP_256
  established 0s ago, rekeying in 17757s
  peer-PEER-tunnel-VTI: #2, reqid 1, INSTALLED, TUNNEL, ESP:AES_GCM_16-256
    installed 0s ago, rekeying in 3539s, expires in 3960s
    in  c9bcb157 (0x90000000),      0 bytes,     0 packets
    out cd8ef3c0 (0x90000000),      0 bytes,     0 packets
    local  10.0.0.1/32
    remote 20.0.0.1/32

Step 4: Ping IP address 20.0.0.1 from DUT0:

admin@DUT0$ ping 20.0.0.1 count 1 size 56 timeout 1
Show output
PING 20.0.0.1 (20.0.0.1) 56(84) bytes of data.
64 bytes from 20.0.0.1: icmp_seq=1 ttl=64 time=0.377 ms

--- 20.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.377/0.377/0.377/0.000 ms

Step 5: Run command vpn ipsec show sa at DUT0 and check if output matches the following regular expressions:

,\s+[^0] packets
Show output
vpn-peer-PEER: #1, ESTABLISHED, IKEv2, 59a053e3b232fd43_i 83a1647ebe30e358_r*
  local  '192.168.100.10' @ 192.168.100.10[500]
  remote '192.168.100.20' @ 192.168.100.20[500]
  AES_GCM_16-256/PRF_HMAC_SHA2_256/ECP_256
  established 0s ago, rekeying in 17757s
  peer-PEER-tunnel-VTI: #2, reqid 1, INSTALLED, TUNNEL, ESP:AES_GCM_16-256
    installed 0s ago, rekeying in 3539s, expires in 3960s
    in  c9bcb157 (0x90000000),     84 bytes,     1 packets,     0s ago
    out cd8ef3c0 (0x90000000),     84 bytes,     1 packets,     0s ago
    local  10.0.0.1/32
    remote 20.0.0.1/32