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w14219
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Posts: 11
Joined: Mon Aug 27, 2012 5:36 pm

EoIP not maintaining DHCP IP

Tue Sep 07, 2021 2:10 am

Router: RB2011UiAS
Firmware: 6.48.4

Details:
  • Established EoIP connection
  • DHCP Server on location 1
  • IP Phone on location 2
  • XBOX on location 2
Summary:
  • The XBOX is connected to the IP Phone via ethernet
  • The IP Phone and XBOX will receive an IP from location 1
  • The XBOX will maintain the IP address from location 1
  • The IP Phone will drop the IP address 30 seconds after it receives it
  • The IP Phone will keep the DNS settings, not the IP address
  • I can Ping the XBOX from location 1, through the phone
dhcp.png
Question:
Why am I losing the IP address on the phone? I tried with 2 different phones. One that I used before, and a new one I just bought to test with because of this issue.
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w14219
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Topic Author
Posts: 11
Joined: Mon Aug 27, 2012 5:36 pm

Re: EoIP not maintaining DHCP IP

Tue Sep 07, 2021 4:20 am

I enabled logging on the DHCP MT router and found the following:

Sep/06/2021 20:12:14 dhcp,debug dhcp_pool2 received discover id 202734752 from 0.0.0.0 '1:0:50:58:51:a2:db'
Sep/06/2021 20:12:14 dhcp,debug,packet ciaddr = 0.0.0.0
Sep/06/2021 20:12:14 dhcp,debug,packet chaddr = 00:50:58:51:A2:DB
Sep/06/2021 20:12:14 dhcp,debug,packet Msg-Type = discover
Sep/06/2021 20:12:14 dhcp,debug,packet Client-Id = 01-00-50-58-51-A2-DB
Sep/06/2021 20:12:14 dhcp,debug,packet Host-Name = "S500-00505851A2DB"
Sep/06/2021 20:12:14 dhcp,debug,packet Class-Id = "Sangoma_S500_2_0_4_85"
Sep/06/2021 20:12:14 dhcp,debug,packet Max-DHCP-Message-Size = 576
Sep/06/2021 20:12:14 dhcp,debug,packet Parameter-List = Subnet-Mask,Unknown(2),Router,Domain-Server,Host-Name,Domain-Name,Broadcast-Address,NTP-Server,Unknown(66),Unknown(128),Unknown(132),Unknown(150)
Sep/06/2021 20:12:14 dhcp,debug lease found, waiting, acquire
Sep/06/2021 20:12:14 dhcp,debug 4 offers in a row
Sep/06/2021 20:12:14 dhcp,debug dhcp_pool2 sending offer with id 202734752 to 255.255.255.255
Sep/06/2021 20:12:14 dhcp,debug,packet ciaddr = 0.0.0.0
Sep/06/2021 20:12:14 dhcp,debug,packet yiaddr = 192.168.1.100
Sep/06/2021 20:12:14 dhcp,debug,packet siaddr = 192.168.1.1
Sep/06/2021 20:12:14 dhcp,debug,packet chaddr = 00:50:58:51:A2:DB
Sep/06/2021 20:12:14 dhcp,debug,packet Msg-Type = offer
Sep/06/2021 20:12:14 dhcp,debug,packet Server-Id = 192.168.1.1
Sep/06/2021 20:12:14 dhcp,debug,packet Address-Time = 300
Sep/06/2021 20:12:14 dhcp,debug,packet Subnet-Mask = 255.255.255.0
Sep/06/2021 20:12:14 dhcp,debug,packet Router = 192.168.1.1
Sep/06/2021 20:12:14 dhcp,debug,packet Domain-Server = 192.168.1.11,192.168.1.10
.
.
.
Sep/06/2021 20:12:44 dhcp,debug lease 192.168.1.100 expired
 
w14219
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Topic Author
Posts: 11
Joined: Mon Aug 27, 2012 5:36 pm

Re: EoIP not maintaining DHCP IP

Tue Sep 07, 2021 5:06 am

I have noticed that when the Bridge is active, I receive DHCP conflict entries like so:
dhcp.png
The conflicts timeout when I disable the bridge.
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