Hi Marco,  Since  all 8 WAN addresses are on the same subnet, you should not need to configure a GW. I would first check that the interfaces negotiated correctly w/ the switches/routers interfaces using ethtool which is available in boxmgmt 'ethtool eth0' ( you can have them check that too from the network side). Second, I would check that the MTU setting on the WAN interfaces is consistent with the network MTU. RP's default is 1500.  Then try to do a test ping -I eth0 to see if it's able to reach.  Hope that helps!  Thanks, Zahid
Hi IHAC with same WAN subnet on both sites For same reason  all eth0 are logging a lot of error/collision Must I configure gateway  or I must leave WAN gateway unconfigured ? This is current settings:  ----------------------------------------------------  Cluster Barilla-Milano                              ----------------------------------------------------  Internal cluster name          0x410291ccfab8fe6d   Product Type                   RPSE                 Cluster management (LAN) IPv4  10.149.103.190       Cluster management (LAN) IPv6  N/A                  LAN netmask IPv4               255.255.254.0        LAN netmask IPv6               N/A                  WAN netmask IP                 255.255.255.0        DATA1 netmask                  N/A                  DATA2 netmask                  N/A                  Time zone                      Europe/Rome          Primary DNS server             10.149.5.111         Secondary DNS server           10.149.5.112         Primary NTP server             10.149.103.254       Secondary NTP servers          N/A                  Local domain                   eu.barilla.net       Number of Virtual Ports        1                                                                        RPA 2                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.102.34           RPA LAN IPv6                N/A                     RPA WAN IP                  172.31.255.4         RPA 3                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.102.35           RPA LAN IPv6                N/A                     RPA WAN IP                  172.31.255.5         RPA 1                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.102.33           RPA LAN IPv6                N/A                     RPA WAN IP                  172.31.255.3         RPA 4                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.102.36           RPA LAN IPv6                N/A                     RPA WAN IP                  172.31.255.6        -----------------------------------------------------------  Gateway                   Target netmask  Target subnet  ---------------------------------------------------------  10.149.103.254 (default)  0.0.0.0         default         172.31.255.2              255.255.255.0   172.31.255.0   ---------------------------------------------------------  ----------------------------------------------------  Cluster Barilla-Roma                                ----------------------------------------------------  Internal cluster name          0x47ab73f4f3c2c63d   Product Type                   RPSE                 Cluster management (LAN) IPv4  10.149.105.170       Cluster management (LAN) IPv6  N/A                  LAN netmask IPv4               255.255.255.0        LAN netmask IPv6               N/A                  WAN netmask IP                 255.255.255.0        DATA1 netmask                  N/A                  DATA2 netmask                  N/A                  Time zone                      Europe/Rome          Primary DNS server             10.149.5.111         Secondary DNS server           10.149.5.112         Primary NTP server             10.149.105.254       Secondary NTP servers          N/A                  Local domain                   eu.barilla.net       Number of Virtual Ports        1                                                                        RPA 2                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.105.28           RPA LAN IPv6                N/A                                             >>     RPA WAN IP                  172.31.255.14        RPA 3                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.105.29           RPA LAN IPv6                N/A                     RPA WAN IP                  172.31.255.15        RPA 4                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.105.30           RPA LAN IPv6                N/A                     RPA WAN IP                  172.31.255.16        RPA 1                                               RPA Nic Topology               wan is separated        RPA LAN IPv4                10.149.105.27           RPA LAN IPv6                N/A                     RPA WAN IP                  172.31.255.13       -----------------------------------------------------------  Gateway                   Target netmask  Target subnet  ---------------------------------------------------------  10.149.105.254 (default)  0.0.0.0         default         172.31.255.1              255.255.255.0   172.31.255.0   ---------------------------------------------------------  Thanks Marco
Two site with the same WAN subnet