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06.02.2008 at 05:01AM PDT, ID: 23449528
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Unknown client DHCP Broadcasts SCOPE FULL

Asked by SNSWSI in Dynamic Host Configuration Protocol (DHCP), Windows 2003 Server, Internet Protocols

Tags: Microsoft, DHCP, W2003

We use W2003 standard with a DHCP scope. Within 30 minutes the DHCP leases are all occupied with clients who are unknown to us. The clientname looks like an MAC adress, the vendor id is IBM (We use IBM, so thats no surprise). I investigated the MAC addresses but they are nowhere to be found. Our network operator has followed the DHCP broadcast and it looks like its comming from all kind of machines, but they all have DHCP disabled. Can anybody give me a clue where to look any further?
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Keywords: Unknown client DHCP Broadcasts SCO…
Title
1 Frequent DHCP Request Broadcasts
2 DHCP Broadcast needs to be plugged
3 DHCP scope full???
4 DHCP and VLAN's
5 understanding DHCP
6 DHCP Clients Renewing Lease At Ever…
 
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[+][-]06.02.2008 at 06:05AM PDT, ID: 21691557

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[+][-]06.02.2008 at 06:27AM PDT, ID: 21691723

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[+][-]06.02.2008 at 06:39AM PDT, ID: 21691829

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[+][-]06.02.2008 at 06:51AM PDT, ID: 21691937

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[+][-]06.03.2008 at 04:03AM PDT, ID: 21699061

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[+][-]06.03.2008 at 04:07AM PDT, ID: 21699084

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[+][-]06.03.2008 at 04:11AM PDT, ID: 21699103

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[+][-]06.05.2008 at 12:26AM PDT, ID: 21717006

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About this solution

Zones: Dynamic Host Configuration Protocol (DHCP), Windows 2003 Server, Internet Protocols
Tags: Microsoft, DHCP, W2003
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Solution Provided By: SNSWSI
Participating Experts: 3
Solution Grade: A
 
 
 
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20080716-EE-VQP-32 / EE_QW_2_20070628