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How do you distinguish a DNS problem from a network problem?
- 11 Answers
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Answers were Sorted based on User's Feedback
Answer / purnima
if you are able to ping to a router or switch connected to
DNS server but not able to ping DNS server..this is surely
a problem with DNS....else its problem in the network.
| Is This Answer Correct ? | 98 Yes | 16 No |
Answer / drew phillibert
If you're able to ping 157.166.224.26 but you are NOT able
to ping cnn.com
Then you're having a DNS problem.
[If you are NOT able to ping EITHER, then there are network
problems and you have NO problems if you CAN ping BOTH]
You can then use nslookup to locate an alternate internal or
external dns server that correctly resolves 'cnn.com' to
it's ip address and configure your workstation's NIC for
this static dns server until the problems with the DHCP
assigned DNS server are fixed.
| Is This Answer Correct ? | 59 Yes | 2 No |
Answer / ajay kuumar
With the help of NSLOOKUP Tool. We can distinguish a DNS problem
AJAY
Mumbai
ajaymum@gmail.com
| Is This Answer Correct ? | 32 Yes | 4 No |
Answer / diwakara2
When u are able to ping the default gateway and the website
address there is no problem in the network and DNS
When u are able to ping the the gateway and the WEBsite IP,
but not the WEBsite address then it is a problem with the
DNS
When u are not able to ping anything its network problem
| Is This Answer Correct ? | 8 Yes | 1 No |
Answer / ramji_avinash
Easy Example: if u are able to ping google.com from your
command prompt then its NOT a Network Problem.
If u are able to ping and if u are unable to see or browse
the web page then its a DNS problem. since DNS is used to
Resolve ip to domain name and vice-versa, so if u are able
to ping the google server for example 74.229.31.45 and if u
are unable to see the google web page then its DND proble.
| Is This Answer Correct ? | 9 Yes | 4 No |
Answer / yen
Normally, we ping to a destination by FQDN. If we found
there is a host unreachable, but we can ping it's ip
address. So it must be DNS problem.PS: it also can be your
network interface card's config to wrong DNS servers.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / guru
You can find the DNS record of your website by Who.is look
up. You need to enter the name of your website in
http://www.who.is/. You can get the complete details of
your hosting
| Is This Answer Correct ? | 2 Yes | 6 No |
Answer / anil
Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights
reserved.
C:\Users\IT-Helpdesk>nslookup
> ?
Commands: (identifiers are shown in uppercase, [] means
optional)
NAME - print info about the host/domain NAME
using default server
NAME1 NAME2 - as above, but use NAME2 as server
help or ? - print info on common commands
set OPTION - set an option
all - print options, current server and
host
[no]debug - print debugging information
[no]d2 - print exhaustive debugging
information
[no]defname - append domain name to each query
[no]recurse - ask for recursive answer to query
[no]search - use domain search list
[no]vc - always use a virtual circuit
domain=NAME - set default domain name to NAME
srchlist=N1[/N2/.../N6] - set domain to N1 and search
list to N1,N2, etc.
root=NAME - set root server to NAME
retry=X - set number of retries to X
timeout=X - set initial time-out interval to
X seconds
type=X - set query type (ex.
A,AAAA,A+AAAA,ANY,CNAME,MX,NS,PTR,
SOA,SRV)
querytype=X - same as type
class=X - set query class (ex. IN
(Internet), ANY)
[no]msxfr - use MS fast zone transfer
ixfrver=X - current version to use in IXFR
transfer request
server NAME - set default server to NAME, using current
default server
lserver NAME - set default server to NAME, using initial
server
finger [USER] - finger the optional NAME at the current
default host
root - set current default server to the root
ls [opt] DOMAIN [> FILE] - list addresses in DOMAIN
(optional: output to FILE)
-a - list canonical names and aliases
-d - list all records
-t TYPE - list records of the given RFC record
type (ex. A,CNAME,MX,NS,
PTR etc.)
view FILE - sort an 'ls' output file and view it
with pg
exit - exit the program
>
| Is This Answer Correct ? | 1 Yes | 9 No |
What LAN analyzer tools are you familiar with and describe how you use them to troubleshoot and on what media and network types.
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