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Regular Contributor I

Aruba instant and dhcp / SCCM / PXE

Hi!

 

We have an issue where APs are sending requests for image files to our sccm server. The APs are located on the same subnet as clients using PXE-boot.

 

Why would the AP request these files and how do I prevent this ?

(see image of sccm log)

Screenshot from 2020-03-24 16-06-33.png


ACMP | ACCP

Accepted Solutions
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Re: Aruba instant and dhcp / SCCM / PXE

Would need to do a packet capture to confirm, but I suspect there is something misconfigured with the Windows DHCP service such that it is returning the bootfile options to the APs incorrectly rather than filtering those from the response.


Charlie Clemmer
Aruba Customer Engineering

View solution in original post

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Regular Contributor I

Re: Aruba instant and dhcp / SCCM / PXE

Hi!

 

I talked to my colleague and it has turned out to be a server issue all along. He reinstalled som SCCM services and after that it no longer has these issues.

 

I think you were right, the server was replying to clients it shouldn't have.

Thanks anyways!


ACMP | ACCP

View solution in original post


All Replies
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Re: Aruba instant and dhcp / SCCM / PXE

Hi, 

 

Are these clients running on vms ?




ACMP / ACSP / ACCP / ACEP / ACDX # 663
CCIE R/S - 37956
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Regular Contributor I

Re: Aruba instant and dhcp / SCCM / PXE

nope


ACMP | ACCP
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Re: Aruba instant and dhcp / SCCM / PXE

What are the DHCP scope options for this network?


Charlie Clemmer
Aruba Customer Engineering
Highlighted
Regular Contributor I

Re: Aruba instant and dhcp / SCCM / PXE

here they are.

Also I forgot to mention, we have dhcp-options for airwave discovery for the IAPs .

And also it did work before. The issue started when they added ip-helper pointing to the SCCM-server directly (not only to the dhcp-server)

 

Screenshot from 2020-03-26 10-26-23.pngScreenshot from 2020-03-26 10-31-08.png


ACMP | ACCP
Highlighted

Re: Aruba instant and dhcp / SCCM / PXE

Would need to do a packet capture to confirm, but I suspect there is something misconfigured with the Windows DHCP service such that it is returning the bootfile options to the APs incorrectly rather than filtering those from the response.


Charlie Clemmer
Aruba Customer Engineering

View solution in original post

Highlighted
Regular Contributor I

Re: Aruba instant and dhcp / SCCM / PXE

yeah, that sounds probable actually. Will see if we can just adjust some filter or do a packetcapture. Thanks.


ACMP | ACCP
Highlighted
Regular Contributor I

Re: Aruba instant and dhcp / SCCM / PXE

Hi!

 

I talked to my colleague and it has turned out to be a server issue all along. He reinstalled som SCCM services and after that it no longer has these issues.

 

I think you were right, the server was replying to clients it shouldn't have.

Thanks anyways!


ACMP | ACCP

View solution in original post

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