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September 19th, 2025 01:40
Dell OS10 S4112F-ON 10.5.6.9 - BGP troubleshooting
I’m troubleshooting an issue on a Dell S4112F-ON running OS10.5.6.9, where BGP is dropping routes. To investigate, I’ve tried enabling BGP debugging with debug ip bgp. However, the output doesn't show any details from BGP updates. This makes it difficult to understand why the routes are being withdrawn or not accepted in the BGP table.
Thanks in advance!
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DELL-Marco B
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September 26th, 2025 14:43
As of OS10.5.x, there are no officially supported debug commands that expose raw BGP update contents, sorry
YashSmith
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September 19th, 2025 09:08
For BGP issues on Dell OS10 S4112F-ON 10.5.6.9, first verify BGP neighbor states with
show bgp summary. Check IP reachability usingpingortraceroute. Confirm AS numbers, passwords, and route policies match between peers. Useshow bgp routeto verify advertised/received routes. Review logs for session flaps or errors.DELL-Marco B
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September 19th, 2025 09:31
Thanks for reaching out. Based on your Dell OS10 S4112F setup running 10.5.6.9, BGP issues may stem from MTU mismatches, route refresh behavior, or passive peering configurations. Please verify MTU consistency across interfaces and use soft resets for policy updates. Let us know if you'd like help reviewing your config or logs.
moraist
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September 19th, 2025 12:58
The BGP session is working fine. The peers are directly connected in a back-to-back setup. The only issue I am facing is that the debug ip bgp command does not show why the routes are being removed from the BGP table on one of the neighbors.
Kvazar
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September 26th, 2025 12:07
@DELL-Marco B I have the same trouble but with l2vpn evpn AF.
Is there any way to see BGP updates contents like other vendors show when you turn on debugging?
May be any hidden commands 'for our own risk'? ;)