3 replies to this topic

[KO]

I have a 2mb Maxcom DSL connection, and after an hour of so running smoothly, the DNS fails to resolve, which stops all browsing. The modem stays connected, and the internet works as well, just that DNS doesn't work.

I get around this by entering google's public DNS servers in my pc, but whenever someone comes over the internet doesn't work as they need to enter the settings manually, which is really annoying. Maxcom seems unable to to comprehend this as an issue... so I was wondering if anyone knows what the problem could be and how to fix it?

The other issue is Google's dns servers are quite far away, so I'm assuming they're slower than Maxcom's own - heres the traceroute for the google dns:

traceroute to 8.8.4.4 (8.8.4.4), 64 hops max, 52 byte packets
 1  192.168.50.1 (192.168.50.1)  6.327 ms  3.349 ms  2.236 ms
 2  1.109.181.58.dynamic.max.com.pk (58.181.109.1)  12.624 ms  9.648 ms  9.802 ms
 3  192.168.1.18 (192.168.1.18)  10.975 ms  14.003 ms  24.897 ms
 4  192.168.3.5 (192.168.3.5)  18.176 ms  15.744 ms  39.417 ms
 5  khi77.pie.net.pk (202.125.137.49)  12.707 ms  29.916 ms  13.284 ms
 6  221.120.251.9 (221.120.251.9)  19.775 ms  31.005 ms  14.508 ms
 7  static-khi-ni02-swa.pie.net.pk (202.125.128.180)  14.036 ms  26.946 ms  20.360 ms
 8  74.125.49.9 (74.125.49.9)  82.705 ms  84.828 ms  82.998 ms
 9  209.85.254.166 (209.85.254.166)  82.991 ms  112.022 ms  84.015 ms
10  209.85.242.233 (209.85.242.233)  122.162 ms  89.512 ms  89.453 ms
11  209.85.241.173 (209.85.241.173)  98.088 ms
    209.85.242.125 (209.85.242.125)  116.851 ms
    209.85.241.173 (209.85.241.173)  95.544 ms
12  209.85.243.146 (209.85.243.146)  102.947 ms
    209.85.250.58 (209.85.250.58)  105.194 ms
    209.85.243.142 (209.85.243.142)  92.680 ms
13  74.125.206.22 (74.125.206.22)  139.040 ms
    74.125.206.26 (74.125.206.26)  98.662 ms
    74.125.206.10 (74.125.206.10)  97.808 ms
14  google-public-dns-b.google.com (8.8.4.4)  132.957 ms  97.442 ms  95.451 ms

Some further info below:

The Maxcom DSL modem is functioning as a router, and automatically assigns it's own IP address to all client PCs. When I connect my laptop using a working ethernet cable directly to the modem it assigns a dns, ip etc. through DHCP. The default DNS assigned is the ip address of the router, which acts as the local dns server passing on requests to the upstream maxcom server. Below I have put in the output from a lookup for google.com. Now when I replace the DNS servers on my laptop with any publicly usable ones like opendns or googles public dns than everything works just fine.

    Lookup has started…


    ; <<>> DiG 9.6.0-APPLE-P2 <<>> google.com +multiline +nocomments +nocmd +noquestion +nostats +search
    ;; global options: +cmd
    ;; connection timed out; no servers could be reached

[Asad]

Does your router not have options for specifying which primary and secondary DNS servers to use under WAN settings?

[KO]

It does, but the default dns it assigns is always itself. So the modem fails to pass on the dns request onwards to whatever dns server I put in its settings.

[sheikh_chilli]

Do you have these values under your TCP/IP Property
dialog box ?.

Subnet mask: 255.0.0.0
Default Gateway: 10.0.0.138

Preferred DNS Server: 202.70.150.10
Alternate DNS Server: 202.70.150.11


Click the "Advanced" tab and click on DNS
===============================
These should be checked in DNS tab:

01. Append primary and connection specific DNS suffixes
02. Append parent suffixes of the primary DNS suffix
03. Register this connection's addresses in DNS


These should be checked in the WINS tab:

01. Enable LMHOSTS lookup
02. NetBIOS setting (default)


These should be checked in the IP Settings:

01. Automatic metric
.
.
.
Sheikh 'Allah Sain Madad Karey Ga' Chilli