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CDP / ISDP entries from Access Ports are propagated to uplinks
Hi,
since a few month we have a strange Problem with ISDP / CDP.
The Dell N3000-ON is propagating the whole ISDP table to the uplinks, and I see all CDP capable devices which are connected to my access ports on access switches also on my coreswitches in the ISDP/CDP table
Is that a bug? I see that Proble in different Firmware version since month, at this time we have DellOS 6.6.3.36
Tobias
DELL-Joey C
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March 3rd, 2021 22:00
Hi,
Try disabling ISDP with the command : no isdp enable.
Let me know if it works for you.
Bias89
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March 3rd, 2021 23:00
I can't disable ISDP completely because I need it for detecting our voice devices from cisco on access ports.
Dell-Stephane T
4 Operator
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March 4th, 2021 00:00
Hi,
I didn't see any issue reported similar with your problem.
What kind/brand of peripheral/device are connected to the N3000?
Regards,
Bias89
20 Posts
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March 4th, 2021 00:00
Hi,
most devices are Cisco Phones, but also other switches like N1100 series are connected.
Tobias
Dell-Stephane T
4 Operator
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March 4th, 2021 01:00
Hi,
I have to escalate. We will keep you informed.
Regards,
DELL-Joey C
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March 4th, 2021 17:00
Hi,
While Stephane is checking with the senior supports, can I check with you if it's possible for you to disable ISDP on the uplink port only?
Bias89
20 Posts
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March 9th, 2021 00:00
Hi,
it's possible for me to do that.
I created a internal change request for that.
DELL-Josh Cr
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July 27th, 2021 11:00
Hi,
Which model switch is it? How long has it been doing it? Is it something that started recently?
jplotkin-umaryland.edu
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July 27th, 2021 11:00
Hi,
I am having a similar issue. I have no isdp enable set globally on my switches and also on some ports. and am running 6.5.4.17 I have been seeing the CPU utilization in the isdp process spike and stay at +/- 20% and the total CPU utilization goto +/- 33% clobbering my older cisco phones (causing the to not register) and I loose SSH access to the switch and it will not respond to ping. I log into the console and run the no isdp enable which is already in the configuration and it resolved the issue temporarily. I was told the the global command is all you need. I do not have the no isdp enable on my uplinks/port channels. Any sugestions