nslookup is giving ;; connection timed out; no servers could be reached ; same issue with dig command . O/S AIX, 6100-03-10-1119

nslookup  is giving ;; connection timed out; no servers could be reached ; same issue with dig command . O/S AIX, 6100-03-10-1119
root@czauap7 /etc >
# nslookup czauap7
;; connection timed out; no servers could be reached

# dig czauap7

; <<>> DiG 9.4.1 <<>> czauap7
;; global options:  printcmd
;; connection timed out; no servers could be reached
root@czauap7 /etc >


ive check /etc/resolv.conf both nameservers are pingable

root@czauap7 / >
# cat /etc/resolv.conf
domain     crdc.kp.org
search     crdc.kp.org crdc.kpscal.org wdc.kp.org ssdc.kp.org kpmas.org nndc.kp.org kp.org ivdc.kp.org dwny.ca.kp.org wcdc.kp.org lvr.ca.kp.org mrcn.ca.kp.org
nameserver 10.210.1.250
nameserver 10.208.1.250
root@czauap7 / >

root@czauap7 / >
# ping 10.210.1.250
PING 10.210.1.250 (10.210.1.250): 56 data bytes
64 bytes from 10.210.1.250: icmp_seq=0 ttl=59 time=0 ms
64 bytes from 10.210.1.250: icmp_seq=1 ttl=59 time=0 ms
64 bytes from 10.210.1.250: icmp_seq=2 ttl=59 time=0 ms

--- 10.210.1.250 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 0/0/0 ms
root@czauap7 / >
# ping 10.208.1.250
PING 10.208.1.250 (10.208.1.250): 56 data bytes
64 bytes from 10.208.1.250: icmp_seq=0 ttl=55 time=5 ms
64 bytes from 10.208.1.250: icmp_seq=1 ttl=55 time=5 ms
64 bytes from 10.208.1.250: icmp_seq=2 ttl=55 time=5 ms
64 bytes from 10.208.1.250: icmp_seq=3 ttl=55 time=5 ms

--- 10.208.1.250 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 5/5/5 ms
root@czauap7 / >
#

ive checked routing table.. dont see any issue

Route tree for Protocol Family 2 (Internet):
default            172.22.180.1      UG       12  36464430 en3      -      -
127/8              127.0.0.1         U        17   6525882 lo0      -      -
172.22.120.0       172.22.120.113    UHSb      0         0 en2      -      -   =>
172.22.120/24      172.22.120.113    U         0    138937 en2      -      -
172.22.120.113     127.0.0.1         UGHS      0         2 lo0      -      -
172.22.120.255     172.22.120.113    UHSb      0    107025 en2      -      -
172.22.180.0       172.22.180.53     UHSb      0         0 en3      -      -   =>
172.22.180/24      172.22.180.53     U         1     11351 en3      -      -
172.22.180.53      127.0.0.1         UGHS      0        68 lo0      -      -
172.22.180.255     172.22.180.53     UHSb      0     82875 en3      -      -
172.31.240.0       172.31.241.245    UHSb      0         0 en1      -      -   =>
172.31.240/21      172.31.241.245    U         3    321130 en1      -      -
172.31.241.245     127.0.0.1         UGHS      0         9 lo0      -      -
172.31.246.113     172.31.240.1      UGH       0   5818625 en1      -      -
172.31.247.255     172.31.241.245    UHSb      0         0 en1      -      -

Route tree for Protocol Family 24 (Internet v6):
::1%1              ::1%1


# aliases = nis, files
#
hosts=local4,bind4  <<========================netsv.conf  file
root@czauap7 /etc >
#
Sdia16Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Zephyr ICTCloud ArchitectCommented:
Did you check if there is a firewall blocking port 53 udp/tcp?
Did it stop working, was it working before, where are the DNS servers located in your network?
Sdia16Author Commented:
It was IPSec rules .. I've removed the rule that's blocking DNS name servers.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Sdia16Author Commented:
Resolved the issue
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
DNS

From novice to tech pro — start learning today.