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3draven
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Help:DHCP default offering lease IP for MAC without success

Fri Sep 06, 2013 12:45 pm

Please help me with a message from the DHCP server (Mikrotik Omnitik):

Time Jan/02/1970 09:12:09
Buffer memory
Topics
dhcp
warning
Message default offering lease 192.168.88.249 for 90:F6:52:32:CC:AD without success

Old clients (home computers) obtain addresses, and new customers do not get!
New client: Access Point TP-LINK 841ND
Previously, she worked!
 
SurferTim
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Re: Help:DHCP default offering lease IP for MAC without succ

Fri Sep 06, 2013 1:17 pm

New client: Access Point TP-LINK 841ND
How does this device fit into this as a client?
 
3draven
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Re: Help:DHCP default offering lease IP for MAC without succ

Fri Sep 06, 2013 6:20 pm

Connection shema:

provider_cable->Omnitik->wireless-<Omnitik->cable<-switch->cables<-"TP-Link 841ND"+notebook+notebook

dhcpdump:

TIME: 2013-09-06 22:23:43.173
IP: 0.0.0.0 (90:f6:52:32:cc:ad) > 255.255.255.255 (ff:ff:ff:ff:ff:ff)
OP: 1 (BOOTPREQUEST)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 0
XID: 70d23a62
SECS: 1055
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 0.0.0.0
SIADDR: 0.0.0.0
GIADDR: 0.0.0.0
CHADDR: 90:f6:52:32:cc:ad:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 1 (DHCPDISCOVER)
OPTION: 57 ( 2) Maximum DHCP message size 576
OPTION: 55 ( 7) Parameter Request List 1 (Subnet mask)
3 (Routers)
6 (DNS server)
12 (Host name)
15 (Domainname)
28 (Broadcast address)
42 (NTP servers)

OPTION: 60 ( 12) Vendor class identifier udhcp 1.19.4
---------------------------------------------------------------------------

TIME: 2013-09-06 22:23:43.175
IP: 192.168.88.2 (0:c:42:dc:ef:99) > 255.255.255.255 (ff:ff:ff:ff:ff:ff)
OP: 2 (BOOTPREPLY)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 0
XID: 70d23a62
SECS: 0
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 192.168.88.100
SIADDR: 192.168.88.2
GIADDR: 0.0.0.0
CHADDR: 90:f6:52:32:cc:ad:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 2 (DHCPOFFER)
OPTION: 54 ( 4) Server identifier 192.168.88.2
OPTION: 51 ( 4) IP address leasetime 259200 (3d)
OPTION: 1 ( 4) Subnet mask 255.255.255.0
OPTION: 3 ( 4) Routers 192.168.88.1
OPTION: 6 ( 4) DNS server 192.168.88.1
OPTION: 42 ( 4) NTP servers 91.207.136.55


repeated cycle!
 
SurferTim
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Re: Help:DHCP default offering lease IP for MAC without succ

Fri Sep 06, 2013 9:38 pm

If we refer to it like this:
provider_cable - OmnitikA - wireless - OmnitikB - cable - switch - cables - TP-Link

Which is the dhcp server?
Which device and interface is assigned 192.168.88.1?
Which is assigned 192.168.88.2?
What are the others assigned?
 
3draven
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Re: Help:DHCP default offering lease IP for MAC without succ

Sat Sep 07, 2013 6:17 am

provider_cable - OmnitikA (static 192.168.88.1 and PPPOE provider connection) - wireless - OmnitikB (static 192.168.88.2 and DHCP server)- cable - switch - cables - TP-Link (and laptops)

Laptops get address from dhcp server is perfectly normal (have long set). TP-Link can not get address (new device).
 
SurferTim
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Re: Help:DHCP default offering lease IP for MAC without succ

Sat Sep 07, 2013 12:58 pm

Laptops get address from dhcp server is perfectly normal (have long set). TP-Link can not get address (new device).
If devices before the TP-Link get ips with dhcp ok, and devices behind the TP-Link get ips ok, then the problem would probably be with a setting in the TP-Link.

Is this the mac address for the TP-Link interface connected to OmnitikB?
90:F6:52:32:CC:AD

There is no other dhcp server active on that network, is there? Have you checked on the TP-Link to see if it got an ip by dhcp?
 
deejayq
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Re: Help:DHCP default offering lease IP for MAC without succ

Thu Sep 12, 2013 1:04 pm

some time ago there were some wireless routers that did not work as a dhcp client on wan and dhcp server on lan.
maybe this is the case also.
try installing dd-wrt on TP-Link 841ND, maybe that will help.
 
3draven
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Re: Help:DHCP default offering lease IP for MAC without succ

Thu Sep 12, 2013 2:34 pm

I have to flash to dd-wrt. The result is the same. I'll try to reduce the length of the wire to the switch.

WAN port on TP-LINK is break! OUT is work, IN is down.

Thanks all.

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