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DHCP user session disconnect every 1min4sec

Publication Date:  2017-07-31 Views:  35 Downloads:  0
Issue Description

The issue only for  whoever using  Belkin Router to dial (IPOE and PPPOE) and access internet ,

for other vendor routers like Dlink / Linksys and static users session stable .

 

Alarm Information

We captured packets on both vendor routers ( not working - Belkin and working -Dlink).

belkin router keep sending DNS request, once ME60 can’t receive DNS response (for many times), Belkin will disconnect session by sending PADT/DHCP-release packet.


 


 

Handling Process

We checked the Belkin router  DNS server ip address 1.1.1.1 (primary) and 2.2.2.2 (secondary) . we tried to reach both ip address from ME60 .

202.83.21.53 not able reach , we can able to ping 2.2.2.2 . then we change 2.2.2.2 as a primary DNS ip address .

 

 

 

after change user session was stable .

 

Root Cause

Belkin Router can only one DNS server ip address . when primary DNS ip address 1.1.1.1 . it keep sending DNS request, once
router can’t receive DNS response (for many times), Belkin will disconnect session by sending PADT/DHCP-release packet.


Solution

It's Related to other vendor device issue . Belkin router can support only one DNS server . if in case DNS server down . need to change the DNS server ip address manually.

END