Saturday, May 30, 2020

Gateway Sometimes Pings

Full disclosure! This is related to my job. I completely understand if you feel that this is free consulting and discourage this behavior. I do welcome any help though!

Happy Weekend Everyone. Or I wish it was!

Pings fail to this gateway on this device for > 90% of packets. It takes until sequence 50 or so for a packet to comeback. This is obviously no good for internet traffic. Other hosts on the same subnet do not have this issue. Other Networks appear to be able to hit the device. They are in a 192. address space compared to this hosts 10. That is second hand information, so feel free to disregard that.

Troubleshooting steps that I have tried:

  1. Changing switch ports.
  2. Ensuring routes are fine (to my knowledge they are fine, but check it out below!)
  3. Changing the cable from the host to the switch.
  4. Unplugging the cable from the switch and pinging the ip the host is assigned. There appears to not be a duplicate IP
  5. Rebooting the firewall.

Routing table:

ip route 10.56.99.0/24 dev eth1 proto kernel scope link src 10.56.99.101 169.254.0.0/16 dev eth1 scope link 127.0.0.0/8 dev lo scope link default via 10.56.99.1 dev eth1 



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