Site-To-Site

This scenario shows how to connect different subnets using site-to-site VPN configuration. One device is VRF-aware, so WAN and LAN interfaces belong to different routing tables.

../../../../../../../_images/sitetosite4.svg

Test Site-To-Site VRF-Aware

Description

In this scenario, the WAN interface (eth0) and the LAN interface (dum0) are bound to different VRFs.

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces eth0 address 80.0.0.1/24
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 auth-profile AUTH-SA
set vpn ipsec site-to-site peer PEER default-esp-group CHILD-SA
set vpn ipsec site-to-site peer PEER ike-group IKE-SA
set vpn ipsec site-to-site peer PEER local-address 80.0.0.1
set vpn ipsec site-to-site peer PEER remote-address 80.0.0.2
set vpn ipsec site-to-site peer PEER tunnel 1 local prefix 10.1.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 remote prefix 10.3.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 local-vrf TUNNEL1
set vpn ipsec site-to-site peer PEER connection-type respond
set interfaces eth0 vrf WAN
set interfaces dum0 address 10.1.0.1/24
set interfaces dum0 vrf TUNNEL1
set protocols vrf TUNNEL1 static route 10.3.0.0/24 interface dum0
set protocols vrf TUNNEL1 static route 0.0.0.0/0 interface eth0
set protocols vrf WAN static route 10.1.0.0/24 next-hop-vrf TUNNEL1
set system vrf TUNNEL1
set system vrf WAN
set vpn ipsec esp-group CHILD-SA mode tunnel

Step 2: Set the following configuration in DUT1:

set interfaces eth0 address 80.0.0.2/24
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 auth-profile AUTH-SA
set vpn ipsec site-to-site peer PEER default-esp-group CHILD-SA
set vpn ipsec site-to-site peer PEER ike-group IKE-SA
set vpn ipsec site-to-site peer PEER local-address 80.0.0.2
set vpn ipsec site-to-site peer PEER remote-address 80.0.0.1
set vpn ipsec site-to-site peer PEER tunnel 1 local prefix 10.3.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 remote prefix 10.1.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 local-interface dum0
set vpn ipsec site-to-site peer PEER connection-type initiate
set interfaces dum0 address 10.3.0.1/24
set protocols static route 0.0.0.0/0 interface dum0
set vpn ipsec esp-group CHILD-SA mode tunnel

Step 3: Ping IP address 80.0.0.1 from DUT1:

admin@DUT1$ ping 80.0.0.1 count 1 size 56 timeout 1
Show output
PING 80.0.0.1 (80.0.0.1) 56(84) bytes of data.
64 bytes from 80.0.0.1: icmp_seq=1 ttl=64 time=0.377 ms

--- 80.0.0.1 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 4: Ping IP address 80.0.0.2 from DUT0:

admin@DUT0$ ping 80.0.0.2 vrf WAN count 1 size 56 timeout 1
Show output
ping: Warning: source address might be selected on device other than WAN.
PING 80.0.0.2 (80.0.0.2) from 80.0.0.1 WAN: 56(84) bytes of data.
64 bytes from 80.0.0.2: icmp_seq=1 ttl=64 time=0.388 ms

--- 80.0.0.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.388/0.388/0.388/0.000 ms

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

peer-PEER-tunnel-\d+.+INSTALLED
Show output
vpn-peer-PEER: #1, ESTABLISHED, IKEv2, 8220430d318cac6b_i c41e23803eeadb0c_r*
  local  '80.0.0.1' @ 80.0.0.1[500]
  remote '80.0.0.2' @ 80.0.0.2[500]
  AES_GCM_16-256/PRF_HMAC_SHA2_256/ECP_256
  established 1s ago, rekeying in 16039s
  peer-PEER-tunnel-1: #1, reqid 1, INSTALLED, TUNNEL, ESP:AES_GCM_16-256
    installed 1s ago, rekeying in 3284s, expires in 3959s
    in  c9e5b2c6,      0 bytes,     0 packets
    out cb68d6df,      0 bytes,     0 packets
    local  10.1.0.0/24
    remote 10.3.0.0/24

Step 6: Ping IP address 10.1.0.1 from DUT1:

admin@DUT1$ ping 10.1.0.1 local-address 10.3.0.1 count 1 size 56 timeout 1
Show output
PING 10.1.0.1 (10.1.0.1) from 10.3.0.1 : 56(84) bytes of data.
64 bytes from 10.1.0.1: icmp_seq=1 ttl=64 time=0.476 ms

--- 10.1.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.476/0.476/0.476/0.000 ms

Step 7: Run command vpn ipsec show sa at DUT0 and check if output matches the following regular expressions:

[1-9]\d? packets
Show output
vpn-peer-PEER: #1, ESTABLISHED, IKEv2, 8220430d318cac6b_i c41e23803eeadb0c_r*
  local  '80.0.0.1' @ 80.0.0.1[500]
  remote '80.0.0.2' @ 80.0.0.2[500]
  AES_GCM_16-256/PRF_HMAC_SHA2_256/ECP_256
  established 1s ago, rekeying in 16039s
  peer-PEER-tunnel-1: #1, reqid 1, INSTALLED, TUNNEL, ESP:AES_GCM_16-256
    installed 1s ago, rekeying in 3284s, expires in 3959s
    in  c9e5b2c6,     84 bytes,     1 packets,     1s ago
    out cb68d6df,     84 bytes,     1 packets,     1s ago
    local  10.1.0.0/24
    remote 10.3.0.0/24

Attention

The command vpn show ipsec policy can be used to debug the IPSec selectors that have been installed in OSDx devices. Example for device DUT0:

Show output
src 10.1.0.0/24 dst 10.3.0.0/24 dev TUNNEL1
        dir out priority 375421
        tmpl src 80.0.0.1 dst 80.0.0.2
                proto esp spi 0xcb68d6df reqid 1 mode tunnel
src 10.3.0.0/24 dst 10.1.0.0/24
        dir fwd priority 375423
        tmpl src 80.0.0.2 dst 80.0.0.1
                proto esp reqid 1 mode tunnel
src 10.3.0.0/24 dst 10.1.0.0/24
        dir in priority 375423
        tmpl src 80.0.0.2 dst 80.0.0.1
                proto esp reqid 1 mode tunnel
src 0.0.0.0/0 dst 0.0.0.0/0
        socket in priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
        socket out priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
        socket in priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
        socket out priority 0
src ::/0 dst ::/0
        socket in priority 0
src ::/0 dst ::/0
        socket out priority 0
src ::/0 dst ::/0
        socket in priority 0
src ::/0 dst ::/0
        socket out priority 0

Test Site-To-Site Multi-VRF

Description

In this scenario, two dummy interfaces are created and bound to different VRFs. The remote end-point should be able to establish an IPSec tunnel to both of them.

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces eth0 address 80.0.0.1/24
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 auth-profile AUTH-SA
set vpn ipsec site-to-site peer PEER default-esp-group CHILD-SA
set vpn ipsec site-to-site peer PEER ike-group IKE-SA
set vpn ipsec site-to-site peer PEER local-address 80.0.0.1
set vpn ipsec site-to-site peer PEER remote-address 80.0.0.2
set vpn ipsec site-to-site peer PEER tunnel 1 local prefix 10.1.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 remote prefix 10.3.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 local-vrf TUNNEL1
set vpn ipsec site-to-site peer PEER connection-type respond
set interfaces eth0 vrf WAN
set interfaces dum0 address 10.1.0.1/24
set interfaces dum0 vrf TUNNEL1
set protocols vrf TUNNEL1 static route 10.3.0.0/24 interface dum0
set protocols vrf TUNNEL1 static route 0.0.0.0/0 interface eth0
set protocols vrf WAN static route 10.1.0.0/24 next-hop-vrf TUNNEL1
set system vrf TUNNEL1
set system vrf WAN
set vpn ipsec site-to-site peer PEER remote-address 80.0.0.2
set vpn ipsec site-to-site peer PEER tunnel 2 local prefix 10.2.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 2 remote prefix 10.3.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 2 local-vrf TUNNEL2
set vpn ipsec site-to-site peer PEER connection-type respond
set interfaces dum1 address 10.2.0.1/24
set interfaces dum1 vrf TUNNEL2
set protocols vrf TUNNEL2 static route 10.3.0.0/24 interface dum1
set protocols vrf TUNNEL2 static route 0.0.0.0/0 interface eth0
set protocols vrf WAN static route 10.2.0.0/24 next-hop-vrf TUNNEL2
set system vrf TUNNEL2
set vpn ipsec esp-group CHILD-SA mode tunnel

Step 2: Set the following configuration in DUT1:

set interfaces eth0 address 80.0.0.2/24
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 auth-profile AUTH-SA
set vpn ipsec site-to-site peer PEER default-esp-group CHILD-SA
set vpn ipsec site-to-site peer PEER ike-group IKE-SA
set vpn ipsec site-to-site peer PEER local-address 80.0.0.2
set vpn ipsec site-to-site peer PEER remote-address 80.0.0.1
set vpn ipsec site-to-site peer PEER tunnel 1 local prefix 10.3.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 remote prefix 10.1.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 1 local-interface dum0
set vpn ipsec site-to-site peer PEER connection-type initiate
set interfaces dum0 address 10.3.0.1/24
set protocols static route 0.0.0.0/0 interface dum0
set vpn ipsec site-to-site peer PEER tunnel 2 local prefix 10.3.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 2 remote prefix 10.2.0.0/24
set vpn ipsec site-to-site peer PEER tunnel 2 local-interface dum0
set vpn ipsec esp-group CHILD-SA mode tunnel

Step 3: Ping IP address 80.0.0.1 from DUT1:

admin@DUT1$ ping 80.0.0.1 count 1 size 56 timeout 1
Show output
PING 80.0.0.1 (80.0.0.1) 56(84) bytes of data.
64 bytes from 80.0.0.1: icmp_seq=1 ttl=64 time=0.398 ms

--- 80.0.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.398/0.398/0.398/0.000 ms

Step 4: Ping IP address 80.0.0.2 from DUT0:

admin@DUT0$ ping 80.0.0.2 vrf WAN count 1 size 56 timeout 1
Show output
ping: Warning: source address might be selected on device other than WAN.
PING 80.0.0.2 (80.0.0.2) from 80.0.0.1 WAN: 56(84) bytes of data.
64 bytes from 80.0.0.2: icmp_seq=1 ttl=64 time=4.21 ms

--- 80.0.0.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 4.210/4.210/4.210/0.000 ms

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

peer-PEER-tunnel-1.+INSTALLED
peer-PEER-tunnel-2.+INSTALLED
Show output
vpn-peer-PEER: #1, ESTABLISHED, IKEv2, e29202887ba73c62_i 7223a831734ec577_r*
  local  '80.0.0.1' @ 80.0.0.1[500]
  remote '80.0.0.2' @ 80.0.0.2[500]
  AES_GCM_16-256/PRF_HMAC_SHA2_256/ECP_256
  established 1s ago, rekeying in 25602s
  peer-PEER-tunnel-1: #1, reqid 1, INSTALLED, TUNNEL, ESP:AES_GCM_16-256
    installed 1s ago, rekeying in 3339s, expires in 3959s
    in  c9d8d786,      0 bytes,     0 packets
    out ce107c71,      0 bytes,     0 packets
    local  10.1.0.0/24
    remote 10.3.0.0/24
  peer-PEER-tunnel-2: #2, reqid 2, INSTALLED, TUNNEL, ESP:AES_GCM_16-256/ECP_256
    installed 1s ago, rekeying in 3328s, expires in 3959s
    in  ca5fff3d,      0 bytes,     0 packets
    out c7a94b10,      0 bytes,     0 packets
    local  10.2.0.0/24
    remote 10.3.0.0/24

Step 6: Ping IP address 10.1.0.1 from DUT1:

admin@DUT1$ ping 10.1.0.1 local-address 10.3.0.1 count 1 size 56 timeout 1
Show output
PING 10.1.0.1 (10.1.0.1) from 10.3.0.1 : 56(84) bytes of data.
64 bytes from 10.1.0.1: icmp_seq=1 ttl=64 time=0.389 ms

--- 10.1.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.389/0.389/0.389/0.000 ms

Step 7: Ping IP address 10.2.0.1 from DUT1:

admin@DUT1$ ping 10.2.0.1 local-address 10.3.0.1 count 1 size 56 timeout 1
Show output
PING 10.2.0.1 (10.2.0.1) from 10.3.0.1 : 56(84) bytes of data.
64 bytes from 10.2.0.1: icmp_seq=1 ttl=64 time=1.20 ms

--- 10.2.0.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 1.204/1.204/1.204/0.000 ms

Step 8: Run command vpn ipsec show sa at DUT0 and expect this output:

Show output
vpn-peer-PEER: #1, ESTABLISHED, IKEv2, e29202887ba73c62_i 7223a831734ec577_r*
  local  '80.0.0.1' @ 80.0.0.1[500]
  remote '80.0.0.2' @ 80.0.0.2[500]
  AES_GCM_16-256/PRF_HMAC_SHA2_256/ECP_256
  established 2s ago, rekeying in 25601s
  peer-PEER-tunnel-1: #1, reqid 1, INSTALLED, TUNNEL, ESP:AES_GCM_16-256
    installed 2s ago, rekeying in 3338s, expires in 3958s
    in  c9d8d786,     84 bytes,     1 packets,     1s ago
    out ce107c71,     84 bytes,     1 packets,     1s ago
    local  10.1.0.0/24
    remote 10.3.0.0/24
  peer-PEER-tunnel-2: #2, reqid 2, INSTALLED, TUNNEL, ESP:AES_GCM_16-256/ECP_256
    installed 2s ago, rekeying in 3327s, expires in 3958s
    in  ca5fff3d,     84 bytes,     1 packets,     1s ago
    out c7a94b10,     84 bytes,     1 packets,     1s ago
    local  10.2.0.0/24
    remote 10.3.0.0/24

Attention

The command vpn show ipsec policy can be used to debug the IPSec selectors that have been installed in OSDx devices. Example for device DUT0:

Show output
src 10.2.0.0/24 dst 10.3.0.0/24 dev TUNNEL2
        dir out priority 375421
        tmpl src 80.0.0.1 dst 80.0.0.2
                proto esp spi 0xc7a94b10 reqid 2 mode tunnel
src 10.3.0.0/24 dst 10.2.0.0/24
        dir fwd priority 375423
        tmpl src 80.0.0.2 dst 80.0.0.1
                proto esp reqid 2 mode tunnel
src 10.3.0.0/24 dst 10.2.0.0/24
        dir in priority 375423
        tmpl src 80.0.0.2 dst 80.0.0.1
                proto esp reqid 2 mode tunnel
src 10.1.0.0/24 dst 10.3.0.0/24 dev TUNNEL1
        dir out priority 375421
        tmpl src 80.0.0.1 dst 80.0.0.2
                proto esp spi 0xce107c71 reqid 1 mode tunnel
src 10.3.0.0/24 dst 10.1.0.0/24
        dir fwd priority 375423
        tmpl src 80.0.0.2 dst 80.0.0.1
                proto esp reqid 1 mode tunnel
src 10.3.0.0/24 dst 10.1.0.0/24
        dir in priority 375423
        tmpl src 80.0.0.2 dst 80.0.0.1
                proto esp reqid 1 mode tunnel
src 0.0.0.0/0 dst 0.0.0.0/0
        socket in priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
        socket out priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
        socket in priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
        socket out priority 0
src ::/0 dst ::/0
        socket in priority 0
src ::/0 dst ::/0
        socket out priority 0
src ::/0 dst ::/0
        socket in priority 0
src ::/0 dst ::/0
        socket out priority 0