Network traceroute troubleshooting | NetApp | Page 1

north cape Sep 5, 2024, 10:07 PM

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Hi everyone.

We seem to struggle with some LDAP connection timeout on our network and might think somewhere in the routing path are packet lost.
Is there anything like MTR that can be used on an ONTAP cluster ?

golden ledge Sep 9, 2024, 1:59 PM

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since LDAP uses UDP per default, MTU problems in the path between the systems and the domain controllers can cause such problems...

shut spruce Sep 9, 2024, 5:02 PM

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This has been an odd issue for some time. I think a recent patch release in current versions may have stabilized the message. Generally it is usually a false positive (although not always especially if your cifs is not working!)

forest rune Sep 9, 2024, 5:04 PM

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There's a traceroute command in ONTAP if that is what you're referring to with MTR:
https://docs.netapp.com/us-en/ontap-cli/network-traceroute.html

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If the messages you are seeing are "secd.ldap.noServers" there are many reasons for it. Most likely it's this: https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/secd.ldap.noServers%3AEMERGENCY_due_to_trusted_DC_discovery_after_ONTAP_upgrade

Otherwise start here: https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/EMS_secd.ldap.noServers_-_Resolution_Guide

#Network traceroute troubleshooting