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DHCP server conflict

DHCP server conflict

DHCP server conflict
DHCP server conflict
8 hours ago
Tags: #Network Connectivity #Firmware Update #OneMesh #DHCP
Model: EX520  
Hardware Version: V1
Firmware Version: 0.3.0 3.0.0 v60b4.0 Build 250530 Rel.40476n

Network Incident Report: Rogue DHCP Server Loop

Issue Summary

The network is experiencing an infinite DHCP loop that drops client connections exactly every 2.5 minutes. A rogue DHCP server/interface is intercepting standard lease renewals and issuing NAK (Negative Acknowledgment) packets, forcing clients to drop their IP addresses and restart the DHCP process.

 

 

Despite i have home network DHCP configured ofr 192.168.0.X   i have unidentified DHCP 192.168.87.2 answering 

 

No Mesh is configured on network. MESH is turned off. Issue occurred on several clients having this router model 

 

 

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#1
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5 Reply
Re:DHCP server conflict
7 hours ago

  @RSazeri 

 

Has this router been provided to you by your ISP ? If that's the case, contact them about this issue and ask for a FW update.

Any other devices on your network that can offer a DHCP service besides your ex520 ?

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#2
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Re:DHCP server conflict
7 hours ago

  @terziyski  Yes provided by ISP. After contacting tech support they have reported that the same issue have been occured on several other devices. Support assumes this is due to automatic FW update turned on by default on device. Now trying find a way to downgrade FW . 

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#3
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Re:DHCP server conflict
7 hours ago

  @RSazeri 

 

Stay in touch with them, because they have to provide a solution in this case — a FW downgrade procedure or a new FW fix.

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#4
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Re:DHCP server conflict
5 hours ago
Any official recomended source to download ad upgrade or downgrade current firmware? Waiting for tech support may take a lot of time, also they recommend HW change.
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#5
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Re:DHCP server conflict
5 hours ago

  @RSazeri 

 

Well, that's the issue. This router model is an ISP provided device and it's not supported by the community, hence a FW to download, would be almost impossible to find.

You have to wait for them to resolve the issue. In fact, they probably could provide you another router, which FW is not updated yet or another router model instead.

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#6
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Information

Helpful: 0

Views: 50

Replies: 5

Tags

Network Connectivity Firmware Update OneMesh
DHCP