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DHCP-Relay not working

Daniels_UTM
Today we tried to setup a DHCP Relay on a UTM v9.106-17

We did this many times before with local routers like cisco, HP, etc.

Setup:

UTM eth5 has a subnet 172.16.1.254/24
LAN has 10.10.10.254/24

DHCP Server (Windows 2k3) tunning on 10.10.10.1
Scope 1: 10.10.10.100-200 (mask /24)
Scope 2: 172.16.1.100-200 (mask /24)


Relay config:
DHCP Server 10.10.10.1 (accessible from the UTM)
Network: eth5 172.16.1.254/24


The Scope is active on the DHCP Server and works if i try relaying by a cisco router. But on the Sophos i got no response in wireshark for the request.

whats wrong here?


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  • 0 in reply to Daniels_UTM
    i have created a testing scenario with a UTM 120

    The setup is: 

    LAN IP Sophos: 10.110.120.4/24
    WLAN IP Sophos: 172.26.26.254/24

    Windows DHCP: 10.110.120.110

    I also didn't work. If i use the cisco Core as a relay agent it works great.

    attached you`ll find the wireshark sample of the DHCP OFFER wich appears on the targeted DHCP Server (i used a laptop as target with only wireshark)

    Maybe someon find the problem [;)]
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