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Connections issues on Radius configured switches
Hi,
we are moving from Cisco to DELL and so we bought some DELL N3048-ON Switches and stack the to gether.
We have a environment with 802.1x / Radius.
I build a Switch configuration with our radius settings included, the ports are in general mode.
In our testings, we didn't noticed that there are some Problems in general mode....
- If a Port is in general mode some clients are not visible on that port. The client is not reachable via PING and the mac address is not visible in the mac address table.
it does not matter if I ping from a different subnet or from the sam subnet and vlan. - The mac address is not visible until the device generates more traffic
- For example: I send Ping from the device to another device
- A perfect example is a temperature logger, this device sends traffic every minute.
- Some times the device is flapping...
- If the device sends traffic, I can reach the device. When the device stops sending traffic the device isn't reachable anymore
- If the device sends traffic, I can reach the device. When the device stops sending traffic the device isn't reachable anymore
- I connected a Cisco Switch to one of the uplink ports of our N3000 switches and configured the port as trunk -> No Problems on the Cisco Switch ! All devices came up directly
- I configured the affected vlans as static vlans on my switche
- I configured a port in access mode on the same switch ... some times its working... sometimes not :(
- I made a factory reset and configured the switch without radius settings and ports in access mode -> working
Very strange and confusing problems ... Does anyone has any idea?
Of couse, I opened a support ticket, but they couldn't help me and he escalated the ticket to 3rd level support.
Greetings
Tobias
DELL-Josh Cr
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8.7K Posts
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April 18th, 2019 16:00
Hi,
Is the firmware up to date? If you private message me the service request or the service tag I can take a look.
Bias89
20 Posts
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April 19th, 2019 03:00
Hi,
yes, the firmware is the newest version for that switch.
We also updated the firmware on our Cisco Catalyst 4500e Core Switch to exclude that der is a problem between Dell & Cisco.
But without success.
Greetings
Tobias
Bias89
20 Posts
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May 10th, 2019 05:00
Hi,
actually the problem is not resolved... and I don't have any idea what I can do.
But I don't think it's a Radius problem. I think that the N Series and our Cisco Catalyst speak a different Rapid-PVST language and that cause the problems.
What I figured out:
The VLAN 150 has only a few clients active on that switch and if I configure a vlan interface on that switch I do have the same issue.
Maybe someone have any idea?
Tobias
Bias89
20 Posts
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May 10th, 2019 08:00
Hi,
I made a small overview about our network topology
RJCMpcr
2 Posts
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October 13th, 2022 13:00
Hi Tobias.
Did you manage to solve this problem?
RJCMpcr
2 Posts
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November 9th, 2022 10:00
Hi Tobias.
Did you manage to solve this problem?