Hello MeyerLevy,

 

I'm sorry to see the routing fails after one successful ping.

 

Is this an existing install that was working and now does not or a new install?

What switch are you connecting to?

Can you test a laptop direct connected to see if it will not drop pings?

 

The firmware looks current.  Could you install Dell driver below and test results?

 

Broadcom Linux RPM packaged driver updates for NetXtreme-E Ethernet, 21.8

Version 21.8, 218.0.169.0

https://dell.to/3j2r6Xo

- Add support for RHEL 7.9

 

Please let me know how it goes.

 

Updated drivers did not solve the issue.

It seems like a kernel bug.

Workaround: Disable icmp cache at kernel level and the problem disappears.

Hello Suri-Na,

 

What other troubleshooting steps have you taken and have you tried disabling the ICMP cache, like the previous poster?

Hi 

I also have the same issue, Updating drivers did not solve the issue.

The workaround is to disable ICMP cache redirections, try this:

To make above settings permanent, we:
1. Create a file /etc/sysctl.d/icmp.conf
2. Append:

net.ipv4.conf.all.accept_redirects=0 
net.ipv4.conf.eth0.accept_redirects=0 
net.ipv4.conf.eth1.accept_redirects=0 

3. Apply configuration to runtime via # sysctl --system