RED Interface shows Uplink N/A

Question

Hello, everyone, 
 I have a problem. Device in Head Office: XG 230 (SFOS 18.5.4 MR-4-Build418) Branch Office Device: XGS 116 (SFOS 19.0.0 GA-Build317) After I updated the firmware in head office, the RED interface between head office and branch office does not work properly. The RED interface is shown as "Uplink: N/A" in Head Office around 8pm every day. In the branch office, the interface is displayed normally (Remote IP: IP from Head Office) but the connection is gone. Although the connection between 2 nodes is "established" and branch office can reach the head office public IP over port TCP 3400. 
 Head Office: # netstat -ano | grep 3400 tcp 0 0 x.x.x.x:3400 y.y.y.y:42468 ESTABLISHED off (0.00/ 
 branch: XGS116_XN01_SFOS 19.0.0 GA-Build317# telnet x.x.x.x 3400 Trying x.x.x.x... Connected to x.x.x.x. Escape character is '^]'. 
 I look forward to any solution or idea how to fix this. 
 greeting

Vivek Jagad · Accepted Answer

Hello Farzan Barouj , Thank you for reaching out to the community, during 8:00 PM when it shows "N/A" can you perform a packet capture on Port 3400 ? > Monitor traffic using Packet Capture Utility : https://support.sophos.com/support/s/article/KB-000035761?language=en_US > Create and download a packet capture : https://support.sophos.com/support/s/article/KB-000037007?language=en_US ========== Apart from this you can also verify or re-configure the tunnel once again: https://docs.sophos.com/nsg/sophos-firewall/19.0/Help/en-us/webhelp/onlinehelp/AdministratorHelp/Network/Interfaces/REDInterfaces/REDCreateSiteToSiteREDTunnel/index.html

Farzan Barouj · Answer

I reconfigured the RED interface in both sides. Since then everything has worked perfectly. 
 Thank you for your help

RED Interface shows Uplink N/A

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