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diff --git a/docs/configexamples/dual-hub-dmvpn.rst b/docs/configexamples/dual-hub-dmvpn.rst index f103972e..ea4d69f7 100644 --- a/docs/configexamples/dual-hub-dmvpn.rst +++ b/docs/configexamples/dual-hub-dmvpn.rst @@ -198,3 +198,1046 @@ ___________________________________ set high-availability vrrp group HQ rfc3768-compatibility set high-availability vrrp group HQ virtual-address '192.168.0.254/24' set high-availability vrrp group HQ vrid '1' + + + +Step-3: DMVPN configuration between Hub and Spoke devices +========================================================= + +This section provides an example configuration of the DMVPN enabled devices. +Hub devices are configured with static IPv4 addresses on the uplink interfaces +while Spoke devices receive addresses dynamically from a pre-defined DHCP +pool configured on ISP router. For redundancy purposes, we use 1 tunnel +interface on each Hub device and 2 tunnel interfaces on Spoke devices +destined to each of the Hubs. For the optimal tunnel operation timers are +significantly decreased and set to the following values: + +**NHRP** tunnel holding time - 30 seconds + +**IKE DPD** enabled with "restart" action set, interval 3 and timeout +30 seconds + +**Note**: these values are used only for the lab demonstration and may not +suit exclusive production networks. + +- Hub-1: + +.. code-block:: none + + set interfaces tunnel tun100 address '172.16.253.134/29' + set interfaces tunnel tun100 encapsulation 'gre' + set interfaces tunnel tun100 multicast 'enable' + set interfaces tunnel tun100 parameters ip key '1' + set interfaces tunnel tun100 source-address '10.11.0.1' + + set protocols nhrp tunnel tun100 cisco-authentication 'secret' + set protocols nhrp tunnel tun100 holding-time '30' + set protocols nhrp tunnel tun100 multicast 'dynamic' + set protocols nhrp tunnel tun100 redirect + set protocols nhrp tunnel tun100 shortcut + + set vpn ipsec esp-group ESP-HUB compression 'disable' + set vpn ipsec esp-group ESP-HUB lifetime '1800' + set vpn ipsec esp-group ESP-HUB mode 'transport' + set vpn ipsec esp-group ESP-HUB pfs 'dh-group2' + set vpn ipsec esp-group ESP-HUB proposal 1 encryption 'aes256' + set vpn ipsec esp-group ESP-HUB proposal 1 hash 'sha1' + set vpn ipsec esp-group ESP-HUB proposal 2 encryption '3des' + set vpn ipsec esp-group ESP-HUB proposal 2 hash 'md5' + set vpn ipsec ike-group IKE-HUB close-action 'none' + set vpn ipsec ike-group IKE-HUB dead-peer-detection action 'restart' + set vpn ipsec ike-group IKE-HUB dead-peer-detection interval '3' + set vpn ipsec ike-group IKE-HUB dead-peer-detection timeout '30' + set vpn ipsec ike-group IKE-HUB ikev2-reauth 'no' + set vpn ipsec ike-group IKE-HUB key-exchange 'ikev2' + set vpn ipsec ike-group IKE-HUB lifetime '3600' + set vpn ipsec ike-group IKE-HUB proposal 1 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 1 encryption 'aes256' + set vpn ipsec ike-group IKE-HUB proposal 1 hash 'sha1' + set vpn ipsec ike-group IKE-HUB proposal 2 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 2 encryption 'aes128' + set vpn ipsec ike-group IKE-HUB proposal 2 hash 'sha1' + set vpn ipsec ipsec-interfaces interface 'eth0' + set vpn ipsec profile NHRPVPN authentication mode 'pre-shared-secret' + set vpn ipsec profile NHRPVPN authentication pre-shared-secret 'secret' + set vpn ipsec profile NHRPVPN bind tunnel 'tun100' + set vpn ipsec profile NHRPVPN esp-group 'ESP-HUB' + set vpn ipsec profile NHRPVPN ike-group 'IKE-HUB' + +- Hub-2: + +.. code-block:: none + + set interfaces tunnel tun100 address '172.16.254.134/29' + set interfaces tunnel tun100 encapsulation 'gre' + set interfaces tunnel tun100 multicast 'enable' + set interfaces tunnel tun100 parameters ip key '2' + set interfaces tunnel tun100 source-address '10.21.0.1' + + set protocols nhrp tunnel tun100 cisco-authentication 'secret' + set protocols nhrp tunnel tun100 holding-time '30' + set protocols nhrp tunnel tun100 multicast 'dynamic' + set protocols nhrp tunnel tun100 redirect + set protocols nhrp tunnel tun100 shortcut + + set vpn ipsec esp-group ESP-HUB compression 'disable' + set vpn ipsec esp-group ESP-HUB lifetime '1800' + set vpn ipsec esp-group ESP-HUB mode 'transport' + set vpn ipsec esp-group ESP-HUB pfs 'dh-group2' + set vpn ipsec esp-group ESP-HUB proposal 1 encryption 'aes256' + set vpn ipsec esp-group ESP-HUB proposal 1 hash 'sha1' + set vpn ipsec esp-group ESP-HUB proposal 2 encryption '3des' + set vpn ipsec esp-group ESP-HUB proposal 2 hash 'md5' + set vpn ipsec ike-group IKE-HUB close-action 'none' + set vpn ipsec ike-group IKE-HUB dead-peer-detection action 'restart' + set vpn ipsec ike-group IKE-HUB dead-peer-detection interval '3' + set vpn ipsec ike-group IKE-HUB dead-peer-detection timeout '30' + set vpn ipsec ike-group IKE-HUB ikev2-reauth 'no' + set vpn ipsec ike-group IKE-HUB key-exchange 'ikev2' + set vpn ipsec ike-group IKE-HUB lifetime '3600' + set vpn ipsec ike-group IKE-HUB proposal 1 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 1 encryption 'aes256' + set vpn ipsec ike-group IKE-HUB proposal 1 hash 'sha1' + set vpn ipsec ike-group IKE-HUB proposal 2 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 2 encryption 'aes128' + set vpn ipsec ike-group IKE-HUB proposal 2 hash 'sha1' + set vpn ipsec ipsec-interfaces interface 'eth0' + set vpn ipsec profile NHRPVPN authentication mode 'pre-shared-secret' + set vpn ipsec profile NHRPVPN authentication pre-shared-secret 'secret' + set vpn ipsec profile NHRPVPN bind tunnel 'tun100' + set vpn ipsec profile NHRPVPN esp-group 'ESP-HUB' + set vpn ipsec profile NHRPVPN ike-group 'IKE-HUB' + +- Spoke-1: + +.. code-block:: none + + set interfaces tunnel tun100 address '172.16.253.131/29' + set interfaces tunnel tun100 encapsulation 'gre' + set interfaces tunnel tun100 multicast 'enable' + set interfaces tunnel tun100 parameters ip key '1' + set interfaces tunnel tun100 source-address '0.0.0.0' + set interfaces tunnel tun200 address '172.16.254.131/29' + set interfaces tunnel tun200 encapsulation 'gre' + set interfaces tunnel tun200 multicast 'enable' + set interfaces tunnel tun200 parameters ip key '2' + set interfaces tunnel tun200 source-address '0.0.0.0' + + set protocols nhrp tunnel tun100 cisco-authentication 'secret' + set protocols nhrp tunnel tun100 holding-time '30' + set protocols nhrp tunnel tun100 map 172.16.253.134/29 nbma-address '10.11.0.1' + set protocols nhrp tunnel tun100 map 172.16.253.134/29 register + set protocols nhrp tunnel tun100 multicast 'nhs' + set protocols nhrp tunnel tun100 redirect + set protocols nhrp tunnel tun100 shortcut + set protocols nhrp tunnel tun200 cisco-authentication 'secret' + set protocols nhrp tunnel tun200 holding-time '30' + set protocols nhrp tunnel tun200 map 172.16.254.134/29 nbma-address '10.21.0.1' + set protocols nhrp tunnel tun200 map 172.16.254.134/29 register + set protocols nhrp tunnel tun200 multicast 'nhs' + set protocols nhrp tunnel tun200 redirect + set protocols nhrp tunnel tun200 shortcut + + set vpn ipsec esp-group ESP-HUB compression 'disable' + set vpn ipsec esp-group ESP-HUB lifetime '1800' + set vpn ipsec esp-group ESP-HUB mode 'transport' + set vpn ipsec esp-group ESP-HUB pfs 'dh-group2' + set vpn ipsec esp-group ESP-HUB proposal 1 encryption 'aes256' + set vpn ipsec esp-group ESP-HUB proposal 1 hash 'sha1' + set vpn ipsec esp-group ESP-HUB proposal 2 encryption '3des' + set vpn ipsec esp-group ESP-HUB proposal 2 hash 'md5' + set vpn ipsec ike-group IKE-HUB close-action 'none' + set vpn ipsec ike-group IKE-HUB dead-peer-detection action 'restart' + set vpn ipsec ike-group IKE-HUB dead-peer-detection interval '3' + set vpn ipsec ike-group IKE-HUB dead-peer-detection timeout '30' + set vpn ipsec ike-group IKE-HUB ikev2-reauth 'no' + set vpn ipsec ike-group IKE-HUB key-exchange 'ikev2' + set vpn ipsec ike-group IKE-HUB lifetime '3600' + set vpn ipsec ike-group IKE-HUB proposal 1 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 1 encryption 'aes256' + set vpn ipsec ike-group IKE-HUB proposal 1 hash 'sha1' + set vpn ipsec ike-group IKE-HUB proposal 2 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 2 encryption 'aes128' + set vpn ipsec ike-group IKE-HUB proposal 2 hash 'sha1' + set vpn ipsec ipsec-interfaces interface 'eth0' + set vpn ipsec profile NHRPVPN authentication mode 'pre-shared-secret' + set vpn ipsec profile NHRPVPN authentication pre-shared-secret 'secret' + set vpn ipsec profile NHRPVPN bind tunnel 'tun100' + set vpn ipsec profile NHRPVPN bind tunnel 'tun200' + set vpn ipsec profile NHRPVPN esp-group 'ESP-HUB' + set vpn ipsec profile NHRPVPN ike-group 'IKE-HUB' + +- Spoke-2: + +.. code-block:: none + + set interfaces tunnel tun100 address '172.16.253.132/29' + set interfaces tunnel tun100 encapsulation 'gre' + set interfaces tunnel tun100 multicast 'enable' + set interfaces tunnel tun100 parameters ip key '1' + set interfaces tunnel tun100 source-address '0.0.0.0' + set interfaces tunnel tun200 address '172.16.254.132/29' + set interfaces tunnel tun200 encapsulation 'gre' + set interfaces tunnel tun200 multicast 'enable' + set interfaces tunnel tun200 parameters ip key '2' + set interfaces tunnel tun200 source-address '0.0.0.0' + + set protocols nhrp tunnel tun100 cisco-authentication 'secret' + set protocols nhrp tunnel tun100 holding-time '30' + set protocols nhrp tunnel tun100 map 172.16.253.134/29 nbma-address '10.11.0.1' + set protocols nhrp tunnel tun100 map 172.16.253.134/29 register + set protocols nhrp tunnel tun100 multicast 'nhs' + set protocols nhrp tunnel tun100 redirect + set protocols nhrp tunnel tun100 shortcut + set protocols nhrp tunnel tun200 cisco-authentication 'secret' + set protocols nhrp tunnel tun200 holding-time '30' + set protocols nhrp tunnel tun200 map 172.16.254.134/29 nbma-address '10.21.0.1' + set protocols nhrp tunnel tun200 map 172.16.254.134/29 register + set protocols nhrp tunnel tun200 multicast 'nhs' + set protocols nhrp tunnel tun200 redirect + set protocols nhrp tunnel tun200 shortcut + + set vpn ipsec esp-group ESP-HUB compression 'disable' + set vpn ipsec esp-group ESP-HUB lifetime '1800' + set vpn ipsec esp-group ESP-HUB mode 'transport' + set vpn ipsec esp-group ESP-HUB pfs 'dh-group2' + set vpn ipsec esp-group ESP-HUB proposal 1 encryption 'aes256' + set vpn ipsec esp-group ESP-HUB proposal 1 hash 'sha1' + set vpn ipsec esp-group ESP-HUB proposal 2 encryption '3des' + set vpn ipsec esp-group ESP-HUB proposal 2 hash 'md5' + set vpn ipsec ike-group IKE-HUB close-action 'none' + set vpn ipsec ike-group IKE-HUB dead-peer-detection action 'restart' + set vpn ipsec ike-group IKE-HUB dead-peer-detection interval '3' + set vpn ipsec ike-group IKE-HUB dead-peer-detection timeout '30' + set vpn ipsec ike-group IKE-HUB ikev2-reauth 'no' + set vpn ipsec ike-group IKE-HUB key-exchange 'ikev2' + set vpn ipsec ike-group IKE-HUB lifetime '3600' + set vpn ipsec ike-group IKE-HUB proposal 1 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 1 encryption 'aes256' + set vpn ipsec ike-group IKE-HUB proposal 1 hash 'sha1' + set vpn ipsec ike-group IKE-HUB proposal 2 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 2 encryption 'aes128' + set vpn ipsec ike-group IKE-HUB proposal 2 hash 'sha1' + set vpn ipsec ipsec-interfaces interface 'eth0' + set vpn ipsec profile NHRPVPN authentication mode 'pre-shared-secret' + set vpn ipsec profile NHRPVPN authentication pre-shared-secret 'secret' + set vpn ipsec profile NHRPVPN bind tunnel 'tun100' + set vpn ipsec profile NHRPVPN bind tunnel 'tun200' + set vpn ipsec profile NHRPVPN esp-group 'ESP-HUB' + set vpn ipsec profile NHRPVPN ike-group 'IKE-HUB' + +- Spoke-3: + +.. code-block:: none + + set interfaces tunnel tun100 address '172.16.253.133/29' + set interfaces tunnel tun100 encapsulation 'gre' + set interfaces tunnel tun100 multicast 'enable' + set interfaces tunnel tun100 parameters ip key '1' + set interfaces tunnel tun100 source-address '0.0.0.0' + set interfaces tunnel tun200 address '172.16.254.133/29' + set interfaces tunnel tun200 encapsulation 'gre' + set interfaces tunnel tun200 multicast 'enable' + set interfaces tunnel tun200 parameters ip key '2' + set interfaces tunnel tun200 source-address '0.0.0.0' + + set protocols nhrp tunnel tun100 cisco-authentication 'secret' + set protocols nhrp tunnel tun100 holding-time '30' + set protocols nhrp tunnel tun100 map 172.16.253.134/29 nbma-address '10.11.0.1' + set protocols nhrp tunnel tun100 map 172.16.253.134/29 register + set protocols nhrp tunnel tun100 multicast 'nhs' + set protocols nhrp tunnel tun100 redirect + set protocols nhrp tunnel tun100 shortcut + set protocols nhrp tunnel tun200 cisco-authentication 'secret' + set protocols nhrp tunnel tun200 holding-time '30' + set protocols nhrp tunnel tun200 map 172.16.254.134/29 nbma-address '10.21.0.1' + set protocols nhrp tunnel tun200 map 172.16.254.134/29 register + set protocols nhrp tunnel tun200 multicast 'nhs' + set protocols nhrp tunnel tun200 redirect + set protocols nhrp tunnel tun200 shortcut + + set vpn ipsec esp-group ESP-HUB compression 'disable' + set vpn ipsec esp-group ESP-HUB lifetime '1800' + set vpn ipsec esp-group ESP-HUB mode 'transport' + set vpn ipsec esp-group ESP-HUB pfs 'dh-group2' + set vpn ipsec esp-group ESP-HUB proposal 1 encryption 'aes256' + set vpn ipsec esp-group ESP-HUB proposal 1 hash 'sha1' + set vpn ipsec esp-group ESP-HUB proposal 2 encryption '3des' + set vpn ipsec esp-group ESP-HUB proposal 2 hash 'md5' + set vpn ipsec ike-group IKE-HUB close-action 'none' + set vpn ipsec ike-group IKE-HUB dead-peer-detection action 'restart' + set vpn ipsec ike-group IKE-HUB dead-peer-detection interval '3' + set vpn ipsec ike-group IKE-HUB dead-peer-detection timeout '30' + set vpn ipsec ike-group IKE-HUB ikev2-reauth 'no' + set vpn ipsec ike-group IKE-HUB key-exchange 'ikev2' + set vpn ipsec ike-group IKE-HUB lifetime '3600' + set vpn ipsec ike-group IKE-HUB proposal 1 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 1 encryption 'aes256' + set vpn ipsec ike-group IKE-HUB proposal 1 hash 'sha1' + set vpn ipsec ike-group IKE-HUB proposal 2 dh-group '2' + set vpn ipsec ike-group IKE-HUB proposal 2 encryption 'aes128' + set vpn ipsec ike-group IKE-HUB proposal 2 hash 'sha1' + set vpn ipsec ipsec-interfaces interface 'eth0' + set vpn ipsec profile NHRPVPN authentication mode 'pre-shared-secret' + set vpn ipsec profile NHRPVPN authentication pre-shared-secret 'secret' + set vpn ipsec profile NHRPVPN bind tunnel 'tun100' + set vpn ipsec profile NHRPVPN bind tunnel 'tun200' + set vpn ipsec profile NHRPVPN esp-group 'ESP-HUB' + set vpn ipsec profile NHRPVPN ike-group 'IKE-HUB' + + + +Step-4: Enabling eBGP as a Dynamic Routing Protocol between Hubs and Spokes +=========================================================================== + +For the simplified and better network management we're using eBGP for routing +information exchange between devices. As we're using Active-Standby mode in +this example, Hub-2 is configured with AS-prepand as an export route-policy +and VRRP transition scripts are used for switching mastership based on the +current link/device state. Also, we use multihop BFD for faster eBGP failure +detection. + +Hub-1 and Hub-2 VRRP transition scripts: +________________________________________ + +* /config/scripts/vrrp-master.sh + +.. code-block:: none + + #!/bin/vbash + + if [ $(id -gn) != vyattacfg ]; then + exec sg vyattacfg "$0 $*" + fi + + source /opt/vyatta/etc/functions/script-template + + configure + delete protocols bgp 65000 peer-group DMVPN address-family ipv4-unicast route-map export AS65000-PREP + commit + + exit + + +* /config/scripts/vrrp-fail.sh + +.. code-block:: none + + #!/bin/vbash + + if [ $(id -gn) != vyattacfg ]; then + exec sg vyattacfg "$0 $*" + fi + + source /opt/vyatta/etc/functions/script-template + + configure + set protocols bgp 65000 peer-group DMVPN address-family ipv4-unicast route-map export AS65000-PREP + commit + + exit + + +**Note**: some parts of the script might be dependent on your network topology +and connectivity. Be careful before using it on your own devices. + + +Hub devices configuration: +__________________________ + +- Hub-1: + +.. code-block:: none + + set high-availability vrrp group HQ transition-script backup '/config/scripts/vrrp-fail.sh' + set high-availability vrrp group HQ transition-script fault '/config/scripts/vrrp-fail.sh' + set high-availability vrrp group HQ transition-script master '/config/scripts/vrrp-master.sh' + set high-availability vrrp group HQ transition-script stop '/config/scripts/vrrp-fail.sh' + + set policy route-map AS65000-PREP rule 1 action 'permit' + set policy route-map AS65000-PREP rule 1 set as-path-prepend '65000 65000 65000' + + set protocols bfd peer 172.16.253.131 interval multiplier '3' + set protocols bfd peer 172.16.253.131 interval receive '300' + set protocols bfd peer 172.16.253.131 interval transmit '300' + set protocols bfd peer 172.16.253.131 multihop + set protocols bfd peer 172.16.253.131 source address '172.16.253.134' + set protocols bfd peer 172.16.253.132 interval multiplier '3' + set protocols bfd peer 172.16.253.132 interval receive '300' + set protocols bfd peer 172.16.253.132 interval transmit '300' + set protocols bfd peer 172.16.253.132 multihop + set protocols bfd peer 172.16.253.132 source address '172.16.253.134' + set protocols bfd peer 172.16.253.133 interval multiplier '3' + set protocols bfd peer 172.16.253.133 interval receive '300' + set protocols bfd peer 172.16.253.133 interval transmit '300' + set protocols bfd peer 172.16.253.133 multihop + set protocols bfd peer 172.16.253.133 source address '172.16.253.134' + + set protocols bgp 65000 address-family ipv4-unicast network 192.168.0.0/24 + set protocols bgp 65000 neighbor 172.16.253.131 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.131 remote-as '65001' + set protocols bgp 65000 neighbor 172.16.253.132 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.132 remote-as '65002' + set protocols bgp 65000 neighbor 172.16.253.133 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.133 remote-as '65003' + set protocols bgp 65000 parameters log-neighbor-changes + set protocols bgp 65000 parameters network-import-check + set protocols bgp 65000 peer-group DMVPN bfd + +- Hub-2: + +.. code-block:: none + + set high-availability vrrp group HQ transition-script backup '/config/scripts/vrrp-fail.sh' + set high-availability vrrp group HQ transition-script fault '/config/scripts/vrrp-fail.sh' + set high-availability vrrp group HQ transition-script master '/config/scripts/vrrp-master.sh' + set high-availability vrrp group HQ transition-script stop '/config/scripts/vrrp-fail.sh' + + set policy route-map AS65000-PREP rule 1 action 'permit' + set policy route-map AS65000-PREP rule 1 set as-path-prepend '65000 65000 65000' + + set protocols bfd peer 172.16.254.131 interval multiplier '3' + set protocols bfd peer 172.16.254.131 interval receive '300' + set protocols bfd peer 172.16.254.131 interval transmit '300' + set protocols bfd peer 172.16.254.131 multihop + set protocols bfd peer 172.16.254.131 source address '172.16.254.134' + set protocols bfd peer 172.16.254.132 interval multiplier '3' + set protocols bfd peer 172.16.254.132 interval receive '300' + set protocols bfd peer 172.16.254.132 interval transmit '300' + set protocols bfd peer 172.16.254.132 multihop + set protocols bfd peer 172.16.254.132 source address '172.16.254.134' + set protocols bfd peer 172.16.254.133 interval multiplier '3' + set protocols bfd peer 172.16.254.133 interval receive '300' + set protocols bfd peer 172.16.254.133 interval transmit '300' + set protocols bfd peer 172.16.254.133 multihop + set protocols bfd peer 172.16.254.133 source address '172.16.254.134' + + set protocols bgp 65000 address-family ipv4-unicast network 192.168.0.0/24 + set protocols bgp 65000 neighbor 172.16.254.131 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.131 remote-as '65001' + set protocols bgp 65000 neighbor 172.16.254.132 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.132 remote-as '65002' + set protocols bgp 65000 neighbor 172.16.254.133 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.133 remote-as '65003' + set protocols bgp 65000 parameters log-neighbor-changes + set protocols bgp 65000 parameters network-import-check + set protocols bgp 65000 peer-group DMVPN address-family ipv4-unicast route-map export 'AS65000-PREP' + set protocols bgp 65000 peer-group DMVPN bfd + +Spoke devices configuration: +____________________________ + +- Spoke-1: + +.. code-block:: none + + set protocols bfd peer 172.16.253.134 interval multiplier '3' + set protocols bfd peer 172.16.253.134 interval receive '300' + set protocols bfd peer 172.16.253.134 interval transmit '300' + set protocols bfd peer 172.16.253.134 multihop + set protocols bfd peer 172.16.253.134 source address '172.16.253.131' + set protocols bfd peer 172.16.254.134 interval multiplier '3' + set protocols bfd peer 172.16.254.134 interval receive '300' + set protocols bfd peer 172.16.254.134 interval transmit '300' + set protocols bfd peer 172.16.254.134 multihop + set protocols bfd peer 172.16.254.134 source address '172.16.254.131' + + set protocols bgp 65001 address-family ipv4-unicast network 192.168.1.0/24 + set protocols bgp 65001 neighbor 172.16.253.134 address-family ipv4-unicast + set protocols bgp 65001 neighbor 172.16.253.134 bfd + set protocols bgp 65001 neighbor 172.16.253.134 remote-as '65000' + set protocols bgp 65001 neighbor 172.16.254.134 address-family ipv4-unicast + set protocols bgp 65001 neighbor 172.16.254.134 bfd + set protocols bgp 65001 neighbor 172.16.254.134 remote-as '65000' + set protocols bgp 65001 parameters log-neighbor-changes + +- Spoke-2: + +.. code-block:: none + + set protocols bfd peer 172.16.253.134 interval multiplier '3' + set protocols bfd peer 172.16.253.134 interval receive '300' + set protocols bfd peer 172.16.253.134 interval transmit '300' + set protocols bfd peer 172.16.253.134 multihop + set protocols bfd peer 172.16.253.134 source address '172.16.253.132' + set protocols bfd peer 172.16.254.134 interval multiplier '3' + set protocols bfd peer 172.16.254.134 interval receive '300' + set protocols bfd peer 172.16.254.134 interval transmit '300' + set protocols bfd peer 172.16.254.134 multihop + set protocols bfd peer 172.16.254.134 source address '172.16.254.132' + + set protocols bgp 65002 address-family ipv4-unicast network 192.168.2.0/24 + set protocols bgp 65002 neighbor 172.16.253.134 address-family ipv4-unicast + set protocols bgp 65002 neighbor 172.16.253.134 bfd + set protocols bgp 65002 neighbor 172.16.253.134 remote-as '65000' + set protocols bgp 65002 neighbor 172.16.254.134 address-family ipv4-unicast + set protocols bgp 65002 neighbor 172.16.254.134 bfd + set protocols bgp 65002 neighbor 172.16.254.134 remote-as '65000' + set protocols bgp 65002 parameters log-neighbor-changes + +- Spoke-3: + +.. code-block:: none + + set protocols bfd peer 172.16.253.134 interval multiplier '3' + set protocols bfd peer 172.16.253.134 interval receive '300' + set protocols bfd peer 172.16.253.134 interval transmit '300' + set protocols bfd peer 172.16.253.134 multihop + set protocols bfd peer 172.16.253.134 source address '172.16.253.133' + set protocols bfd peer 172.16.254.134 interval multiplier '3' + set protocols bfd peer 172.16.254.134 interval receive '300' + set protocols bfd peer 172.16.254.134 interval transmit '300' + set protocols bfd peer 172.16.254.134 multihop + set protocols bfd peer 172.16.254.134 source address '172.16.254.133' + + set protocols bgp 65003 address-family ipv4-unicast network 192.168.3.0/24 + set protocols bgp 65003 neighbor 172.16.253.134 address-family ipv4-unicast + set protocols bgp 65003 neighbor 172.16.253.134 bfd + set protocols bgp 65003 neighbor 172.16.253.134 remote-as '65000' + set protocols bgp 65003 neighbor 172.16.254.134 address-family ipv4-unicast + set protocols bgp 65003 neighbor 172.16.254.134 bfd + set protocols bgp 65003 neighbor 172.16.254.134 remote-as '65000' + set protocols bgp 65003 parameters log-neighbor-changes + +**Note**: In case if you're using VyOS version that has a VRRP transition +scripts issues after a device reboot, as a temporary solution you may add +postconfig-bootup script that reloads **keepalived** process additionally after +the device booted. + +- Hub devices /config/scripts/vyos-postconfig-bootup.script: + +.. code-block:: none + + #!/bin/sh + # This script is executed at boot time after VyOS configuration is fully applied. + # Any modifications required to work around unfixed bugs + # or use services not available through the VyOS CLI system can be placed here. + + echo "Reloading VRRP process" + sudo systemctl restart keepalived.service + echo "VRRP process reload completed" + + + +Step-5: Verification +==================== + +Now, it's time to check that all protocols are working as expected and mastership +during the failover switches correctly between Hub devices. + +- Checking VRRP state between Hub-1 and Hub-2: + +.. code-block:: none + + vyos@Hub-1:~$ show vrrp + Name Interface VRID State Priority Last Transition + ------ ----------- ------ ------- ---------- ----------------- + HQ eth1v1 1 MASTER 200 14s + + vyos@Hub-2:~$ show vrrp + Name Interface VRID State Priority Last Transition + ------ ----------- ------ ------- ---------- ----------------- + HQ eth1v1 1 BACKUP 100 29s + +- Checking NHRP and eBGP sessions between Hub and Spoke devices: + +.. code-block:: none + + vyos@Hub-1:~$ show nhrp tunnel + Status: ok + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.135/32 + Alias-Address: 172.16.253.134 + Flags: up + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.134/32 + Flags: up + + Interface: tun100 + Type: dynamic + Protocol-Address: 172.16.253.131/32 + NBMA-Address: 10.11.1.11 + Flags: up + Expires-In: 0:23 + + Interface: tun100 + Type: dynamic + Protocol-Address: 172.16.253.133/32 + NBMA-Address: 10.31.1.11 + Flags: up + Expires-In: 0:22 + + Interface: tun100 + Type: dynamic + Protocol-Address: 172.16.253.132/32 + NBMA-Address: 10.21.1.11 + Flags: up + Expires-In: 0:21 + + vyos@Hub-1:~$ show bgp summary + + IPv4 Unicast Summary: + BGP router identifier 192.168.0.1, local AS number 65000 vrf-id 0 + BGP table version 20 + RIB entries 7, using 1344 bytes of memory + Peers 3, using 64 KiB of memory + Peer groups 1, using 64 bytes of memory + + Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt + 172.16.253.131 4 65001 26519 26526 0 0 0 00:43:38 1 4 + 172.16.253.132 4 65002 26545 26540 0 0 0 00:46:36 1 4 + 172.16.253.133 4 65003 26528 26520 0 0 0 00:41:59 1 4 + + Total number of neighbors 3 + + + vyos@Hub-2:~$ show nhrp tunnel + Status: ok + + Interface: tun100 + Type: local + Protocol-Address: 172.16.254.135/32 + Alias-Address: 172.16.254.134 + Flags: up + + Interface: tun100 + Type: local + Protocol-Address: 172.16.254.134/32 + Flags: up + + Interface: tun100 + Type: dynamic + Protocol-Address: 172.16.254.132/32 + NBMA-Address: 10.21.1.11 + Flags: up + Expires-In: 0:28 + + Interface: tun100 + Type: dynamic + Protocol-Address: 172.16.254.131/32 + NBMA-Address: 10.11.1.11 + Flags: up + Expires-In: 0:21 + + Interface: tun100 + Type: dynamic + Protocol-Address: 172.16.254.133/32 + NBMA-Address: 10.31.1.11 + Flags: up + Expires-In: 0:20 + + vyos@Hub-2:~$ show bgp summary + + IPv4 Unicast Summary: + BGP router identifier 192.168.0.2, local AS number 65000 vrf-id 0 + BGP table version 14 + RIB entries 7, using 1344 bytes of memory + Peers 3, using 64 KiB of memory + Peer groups 1, using 64 bytes of memory + + Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt + 172.16.254.131 4 65001 26516 26516 0 0 0 00:43:03 1 4 + 172.16.254.132 4 65002 26563 26562 0 0 0 00:48:27 1 4 + 172.16.254.133 4 65003 26518 26516 0 0 0 00:42:20 1 4 + + Total number of neighbors 3 + +- Checking BFD sessions between Hub and Spoke devices: + +.. code-block:: none + + vyos@Hub-1:~$ show protocols bfd peers + Session count: 6 + SessionId LocalAddress PeerAddress Status + ========= ============ =========== ====== + 3600626867 172.16.253.134 172.16.253.133 up + 1123939978 172.16.253.134 172.16.253.131 up + 374394280 172.16.253.134 172.16.253.132 up + 1786735466 172.16.253.134 172.16.253.132 up + 1440522544 172.16.253.134 172.16.253.131 up + 1106910911 172.16.253.134 172.16.253.133 up + + + vyos@Hub-2:~$ show protocols bfd peers + Session count: 6 + SessionId LocalAddress PeerAddress Status + ========= ============ =========== ====== + 2442966178 172.16.254.134 172.16.254.133 up + 393258775 172.16.254.134 172.16.254.131 up + 2990308682 172.16.254.134 172.16.254.133 up + 2267910949 172.16.254.134 172.16.254.132 up + 3542474595 172.16.254.134 172.16.254.131 up + 4239538185 172.16.254.134 172.16.254.132 up + +- Checking routing information and connectivity between Hub and Spoke devices: + +.. code-block:: none + + vyos@Hub-1:~$ show ip bgp + BGP table version is 20, local router ID is 192.168.0.1, vrf id 0 + Default local pref 100, local AS 65000 + Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, + i internal, r RIB-failure, S Stale, R Removed + Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self + Origin codes: i - IGP, e - EGP, ? - incomplete + + Network Next Hop Metric LocPrf Weight Path + *> 192.168.0.0/24 0.0.0.0 0 32768 i + *> 192.168.1.0/24 172.16.253.131 0 0 65001 i + *> 192.168.2.0/24 172.16.253.132 0 0 65002 i + *> 192.168.3.0/24 172.16.253.133 0 0 65003 i + + Displayed 4 routes and 4 total paths + + + vyos@Hub-2:~$ show ip bgp + BGP table version is 14, local router ID is 192.168.0.2, vrf id 0 + Default local pref 100, local AS 65000 + Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, + i internal, r RIB-failure, S Stale, R Removed + Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self + Origin codes: i - IGP, e - EGP, ? - incomplete + + Network Next Hop Metric LocPrf Weight Path + *> 192.168.0.0/24 0.0.0.0 0 32768 i + *> 192.168.1.0/24 172.16.254.131 0 0 65001 i + *> 192.168.2.0/24 172.16.254.132 0 0 65002 i + *> 192.168.3.0/24 172.16.254.133 0 0 65003 i + + Displayed 4 routes and 4 total paths + + + vyos@Spoke-1:~$ show ip bgp + BGP table version is 19, local router ID is 192.168.1.1, vrf id 0 + Default local pref 100, local AS 65001 + Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, + i internal, r RIB-failure, S Stale, R Removed + Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self + Origin codes: i - IGP, e - EGP, ? - incomplete + + Network Next Hop Metric LocPrf Weight Path + * 192.168.0.0/24 172.16.254.134 0 0 65000 65000 65000 65000 i + *> 172.16.253.134 0 0 65000 i + *> 192.168.1.0/24 0.0.0.0 0 32768 i + * 192.168.2.0/24 172.16.254.132 0 65000 65000 65000 65000 65002 i + *> 172.16.253.132 0 65000 65002 i + * 192.168.3.0/24 172.16.254.133 0 65000 65000 65000 65000 65003 i + *> 172.16.253.133 0 65000 65003 i + + Displayed 4 routes and 7 total paths + +As you can see, Hub-2 announces routes with longer(prepended) AS path as +we've configured it previously, those, traffic towards HQ subnet will be +forwarded over Hub-1 which is operating as an Active VRRP router. Let's +check connectivity and the path from Spoke-1 to the HQ local network: + +.. code-block:: none + + vyos@Spoke-1:~$ ping 192.168.0.10 count 5 interface 192.168.1.1 + PING 192.168.0.10 (192.168.0.10) from 192.168.1.1 : 56(84) bytes of data. + 64 bytes from 192.168.0.10: icmp_seq=1 ttl=63 time=3.50 ms + 64 bytes from 192.168.0.10: icmp_seq=2 ttl=63 time=2.45 ms + 64 bytes from 192.168.0.10: icmp_seq=3 ttl=63 time=2.34 ms + 64 bytes from 192.168.0.10: icmp_seq=4 ttl=63 time=2.20 ms + 64 bytes from 192.168.0.10: icmp_seq=5 ttl=63 time=2.44 ms + + --- 192.168.0.10 ping statistics --- + 5 packets transmitted, 5 received, 0% packet loss, time 11ms + rtt min/avg/max/mdev = 2.195/2.583/3.496/0.465 ms + + vyos@Spoke-1:~$ traceroute 192.168.0.10 + traceroute to 192.168.0.10 (192.168.0.10), 30 hops max, 60 byte packets + 1 172.16.253.134 (172.16.253.134) 0.913 ms 0.884 ms 0.819 ms + 2 192.168.0.10 (192.168.0.10) 1.352 ms 1.446 ms 1.391 ms + +From the output, we can confirm successful connectivity between Spoke-1 and HQ +local networks. From the traceroute we see that the traffic pass through the +Hub-1. + +Now, let's check traffic between Spoke sites. Based on our configuration, Spoke +sites are using shourtcut for direct reachability between each other. First, let's +check NHRP tunnels before passing the traffic between Spoke-1 and Spoke-2: + +.. code-block:: none + + vyos@Spoke-1:~$ show nhrp tunnel + Status: ok + + Interface: tun200 + Type: local + Protocol-Address: 172.16.254.135/32 + Alias-Address: 172.16.254.131 + Flags: up + + Interface: tun200 + Type: local + Protocol-Address: 172.16.254.131/32 + Flags: up + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.135/32 + Alias-Address: 172.16.253.131 + Flags: up + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.131/32 + Flags: up + + Interface: tun200 + Type: static + Protocol-Address: 172.16.254.134/29 + NBMA-Address: 10.21.0.1 + Flags: used up + + Interface: tun100 + Type: static + Protocol-Address: 172.16.253.134/29 + NBMA-Address: 10.11.0.1 + Flags: used up + + vyos@Spoke-2:~$ show nhrp tunnel + Status: ok + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.135/32 + Alias-Address: 172.16.253.132 + Flags: up + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.132/32 + Flags: up + + Interface: tun200 + Type: local + Protocol-Address: 172.16.254.135/32 + Alias-Address: 172.16.254.132 + Flags: up + + Interface: tun200 + Type: local + Protocol-Address: 172.16.254.132/32 + Flags: up + + Interface: tun100 + Type: static + Protocol-Address: 172.16.253.134/29 + NBMA-Address: 10.11.0.1 + Flags: used up + + Interface: tun200 + Type: static + Protocol-Address: 172.16.254.134/29 + NBMA-Address: 10.21.0.1 + + +After passing traffic we could see that there is additional shourtcut tunnel +created between Spoke-1 and Spoke-2 for the direct communication: + +.. code-block:: none + + vyos@Spoke-1:~$ ping 192.168.2.1 count 5 interface 192.168.1.1 + PING 192.168.2.1 (192.168.2.1) from 192.168.1.1 : 56(84) bytes of data. + 64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=1.03 ms + 64 bytes from 192.168.2.1: icmp_seq=2 ttl=64 time=0.820 ms + 64 bytes from 192.168.2.1: icmp_seq=3 ttl=64 time=1.13 ms + 64 bytes from 192.168.2.1: icmp_seq=4 ttl=63 time=1.41 ms + 64 bytes from 192.168.2.1: icmp_seq=5 ttl=64 time=0.988 ms + + --- 192.168.2.1 ping statistics --- + 5 packets transmitted, 5 received, 0% packet loss, time 10ms + rtt min/avg/max/mdev = 0.820/1.075/1.412/0.197 ms + + vyos@Spoke-1:~$ traceroute 192.168.2.1 + traceroute to 192.168.2.1 (192.168.2.1), 30 hops max, 60 byte packets + 1 192.168.2.1 (192.168.2.1) 1.172 ms 1.109 ms 1.151 ms + + vyos@Spoke-1:~$ show nhrp tunnel + Status: ok + + Interface: tun200 + Type: local + Protocol-Address: 172.16.254.135/32 + Alias-Address: 172.16.254.131 + Flags: up + + Interface: tun200 + Type: local + Protocol-Address: 172.16.254.131/32 + Flags: up + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.135/32 + Alias-Address: 172.16.253.131 + Flags: up + + Interface: tun100 + Type: local + Protocol-Address: 172.16.253.131/32 + Flags: up + + Interface: tun200 + Type: static + Protocol-Address: 172.16.254.134/29 + NBMA-Address: 10.21.0.1 + Flags: used up + + ____________________________________ + Interface: tun100 + Type: cached + Protocol-Address: 172.16.253.132/32 + NBMA-Address: 10.21.1.11 + Flags: used up + Expires-In: 0:24 + ____________________________________ + + Interface: tun100 + Type: static + Protocol-Address: 172.16.253.134/29 + NBMA-Address: 10.11.0.1 + Flags: used up + +The same applies to the rest of the devices and works with the same logic. +As we've already confirmed successfull connectivity between Hub and Spoke +devices, let's check failover process. + +- Failover on the health-check failure on Hub-1: + +.. code-block:: none + + # disabling interface towards Hub-1 on ISP router + vyos@ISP1:~$ configure + [edit] + vyos@ISP1# set interfaces ethernet eth0 disable + [edit] + vyos@ISP1# commit + [edit] + vyos@ISP1# + + + # checking VRRP state and eBGP configuration on Hub-1: + vyos@Hub-1:~$ show vrrp + Name Interface VRID State Priority Last Transition + ------ ----------- ------ ------- ---------- ----------------- + HQ eth1v1 1 FAULT 200 1m15s + + vyos@Hub-1:~$ show configuration commands | match bgp + set protocols bgp 65000 address-family ipv4-unicast network 192.168.0.0/24 + set protocols bgp 65000 neighbor 172.16.253.131 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.131 remote-as '65001' + set protocols bgp 65000 neighbor 172.16.253.132 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.132 remote-as '65002' + set protocols bgp 65000 neighbor 172.16.253.133 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.133 remote-as '65003' + set protocols bgp 65000 parameters log-neighbor-changes + set protocols bgp 65000 peer-group DMVPN address-family ipv4-unicast route-map export 'AS65000-PREP' + set protocols bgp 65000 peer-group DMVPN bfd + + + # consecutive pings check from Spoke-1 to the HQ local network during the failure + --- 192.168.0.10 ping statistics --- + 223 packets transmitted, 219 received, 1.79372% packet loss, time 679ms + rtt min/avg/max/mdev = 0.918/2.191/2.957/0.364 ms + vyos@Spoke-1:~$ + + + # consecutive pings check from Spoke-3 to the Spoke-2 local network during the failure + --- 192.168.2.1 ping statistics --- + 265 packets transmitted, 265 received, 0% packet loss, time 690ms + rtt min/avg/max/mdev = 0.663/1.128/2.272/0.285 ms + vyos@Spoke-3:~$ + +**Note**: After bringing ISP interface towards Hub-1 back to UP state, +VRRP state will remain unchanged due to "no-preempt" option enabled +under the VRRP configuration on the Hub-1 and Hub-2 and will be changed +only during link/device failure on Hub-2. + +- Failover during Hub-2 device failure: + +.. code-block:: none + + # Checking VRRP state and eBGP configuration on Hub-2 before reboot + vyos@Hub-2:~$ show vrrp + Name Interface VRID State Priority Last Transition + ------ ----------- ------ ------- ---------- ----------------- + HQ eth1v1 1 MASTER 100 20m22s + + vyos@Hub-2:~$ show configuration commands | match bgp + set protocols bgp 65000 address-family ipv4-unicast network 192.168.0.0/24 + set protocols bgp 65000 neighbor 172.16.254.131 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.131 remote-as '65001' + set protocols bgp 65000 neighbor 172.16.254.132 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.132 remote-as '65002' + set protocols bgp 65000 neighbor 172.16.254.133 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.133 remote-as '65003' + set protocols bgp 65000 parameters log-neighbor-changes + set protocols bgp 65000 peer-group DMVPN address-family ipv4-unicast route-map + set protocols bgp 65000 peer-group DMVPN bfd + + + # Rebooting Hub-2 + vyos@Hub-2:~$ reboot + Are you sure you want to reboot this system? [y/N] y + + + # Checking VRRP state and eBGP configuration on Hub-1 + vyos@Hub-1:~$ show vrrp + Name Interface VRID State Priority Last Transition + ------ ----------- ------ ------- ---------- ----------------- + HQ eth1v1 1 MASTER 200 1m57s + + vyos@Hub-1:~$ show configuration commands | match bgp + set protocols bgp 65000 address-family ipv4-unicast network 192.168.0.0/24 + set protocols bgp 65000 neighbor 172.16.253.131 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.131 remote-as '65001' + set protocols bgp 65000 neighbor 172.16.253.132 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.132 remote-as '65002' + set protocols bgp 65000 neighbor 172.16.253.133 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.253.133 remote-as '65003' + set protocols bgp 65000 parameters log-neighbor-changes + set protocols bgp 65000 peer-group DMVPN address-family ipv4-unicast route-map + set protocols bgp 65000 peer-group DMVPN bfd + + + # Checking VRRP state and eBGP configuration on Hub-2 after reboot completed + vyos@Hub-2:~$ show vrrp + Name Interface VRID State Priority Last Transition + ------ ----------- ------ ------- ---------- ----------------- + HQ eth1v1 1 BACKUP 100 1m46s + + vyos@Hub-2:~$ show configuration commands | match bgp + set protocols bgp 65000 address-family ipv4-unicast network 192.168.0.0/24 + set protocols bgp 65000 neighbor 172.16.254.131 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.131 remote-as '65001' + set protocols bgp 65000 neighbor 172.16.254.132 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.132 remote-as '65002' + set protocols bgp 65000 neighbor 172.16.254.133 peer-group 'DMVPN' + set protocols bgp 65000 neighbor 172.16.254.133 remote-as '65003' + set protocols bgp 65000 parameters log-neighbor-changes + set protocols bgp 65000 peer-group DMVPN address-family ipv4-unicast route-map export 'AS65000-PREP' + set protocols bgp 65000 peer-group DMVPN bfd + + + # consecutive pings check from Spoke-1 to the HQ local network during the failure + --- 192.168.0.10 ping statistics --- + 1182 packets transmitted, 1182 received, 0% packet loss, time 1921ms + rtt min/avg/max/mdev = 0.890/1.692/3.305/0.503 ms + vyos@Spoke-1:~$ + + + # consecutive pings check from Spoke-3 to the Spoke-2 local network during the failure + --- 192.168.2.1 ping statistics --- + 1186 packets transmitted, 1186 received, 0% packet loss, time 2100ms + rtt min/avg/max/mdev = 0.506/1.236/8.497/0.369 ms + vyos@Spoke-3:~$ + +From the results, we can see that the switchover performed as expected with +0 packets loss both from Spoke-1 to HQ and Spoke-3 to Spoke-2 networks. |