DNS Issues - Can ping server name and IPs but not FQDNs.
Hi All,
Hopefully some one can help me here, I am having an issue where one of my domain attached servers cannot ping any FQDNs in the environment but it can ping the host names and the IPs and look up the host names from a reverse look up.
We have done the following troubleshooting:
Flushed and registered DNS cache.
Restarted the DNS client and net logon services on the effected server
Preformed standard checks and commands such as:
Checked the event logs and found there were warnings for DNS registration.
Compared the DNS settings in the network adapters across the rest of the servers in the environment and found that they were all the same. DNS Suffixes are added in the correct order and are set to register.
Pinging FQDNs which is not giving any results.
Tracert FQDNs which is also not giving any results.
Nslookup which is querying the DNS server directly and giving results as expected
Ran the command which reported successful: dcdiag /test:registerindns /dnsdomain:sub.domain.net /v
Checked and updated the permissions on DNS for the affected server to give the server full control of its own DNS entry.
Replaced the DNS Client service DLL with one from a server that is working as expected.
Also worth noting is that the affected server (as well as every other server in the environment) has 2 NICs, one that communicates with DNS and AD and the other does not have any DNS IPs set.
Not this is not the first time this happened, a reboot fixed the issue before but it seems to be a reoccurring problem now.
If any one can shed some light on this issue I would be grateful.
Regards,
Steve.
Hi Steve,
First, we should confirm if this issue is caused by DNS.
When you ping the FQDN, does the server show the correct corresponding IP address?
If no, there should be some error messages. If it is possible, please post the screenshot of this issue.
To check the process about how does server resolve the FQDN, please follow the steps below:
clear local DNS cache with command ipconfig /flushdns
perform the network capture
ping the specified FQDN
Check the DNS traffic
To download Network Monitor, please click the link below:
http://www.microsoft.com/en-hk/download/details.aspx?id=4865
Besides, have you tried to update the NIC driver to the latest version?
Best Regards.
Steven Lee Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]
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I've been trying to trudge my way through an issue our client is having but I'm getting nowhere fast. This issue was discovered when searching for why users at our second site were experiencing slow logons every morning (5-10minutes to login).
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When NSLOOKUP starts, before anything else, it checks the computer's network configuration to determine the IP address of the DNS server that the computer uses.
Then it does a reverse DNS lookup on that IP address to determine the name of the DNS server.
If reverse DNS for that IP address is not setup correctly, then NSLOOKUP cannot determine the name associated with the IP address.
http://support.simpledns.com/kb/a90/nslookup-cant-find-server-name___-default-server-unknown.aspx
Also refer to:
How to fix NSLOOKUP Default Server: UnKnown?
http://www.randika.info/2013/01/how-to-fix-nslookup-default-server.html
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interface Ethernet0/0
nameif outside
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ip address x.x.x.x x.x.x.x
interface Ethernet0/1
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access-list outside_access_in extended permit tcp any any eq 3390
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access-list outside_access_in extended permit tcp any any eq 22225
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logging asdm informational
mtu outside 1500
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0d06092a 864886f7 0d010105 05003081 ca310b30 09060355 04061302 55533117
30150603 55040a13 0e566572 69536967 6e2c2049 6e632e31 1f301d06 0355040b
13165665 72695369 676e2054 72757374 204e6574 776f726b 313a3038 06035504
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65727469 66696361 74696f6e 20417574 686f7269 7479202d 20473530 1e170d31
30303230 38303030 3030305a 170d3230 30323037 32333539 35395a30 81b5310b
30090603 55040613 02555331 17301506 0355040a 130e5665 72695369 676e2c20
496e632e 311f301d 06035504 0b131656 65726953 69676e20 54727573 74204e65
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3130312f 302d0603 55040313 26566572 69536967 6e20436c 61737320 33205365
63757265 20536572 76657220 4341202d 20473330 82012230 0d06092a 864886f7
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a7ada23e 9cbaf6c1 39b88bca c2ac56c6 e5bb658e 444f4dce 6fed094a d4af4e10
9c688b2e 957b899b 13cae234 34c1f35b f3497b62 83488174 d188786c 0253f9bc
7f432657 5833833b 330a17b0 d04e9124 ad867d64 12dc744a 34a11d0a ea961d0b
15fca34b 3bce6388 d0f82d0c 948610ca b69a3dca eb379c00 48358629 5078e845
63cd1941 4ff595ec 7b98d4c4 71b350be 28b38fa0 b9539cf5 ca2c23a9 fd1406e8
18b49ae8 3c6e81fd e4cd3536 b351d369 ec12ba56 6e6f9b57 c58b14e7 0ec79ced
4a546ac9 4dc5bf11 b1ae1c67 81cb4455 33997f24 9b3f5345 7f861af3 3cfa6d7f
81f5b84a d3f58537 1cb5a6d0 09e4187b 384efa0f 02030100 01a38201 df308201
db303406 082b0601 05050701 01042830 26302406 082b0601 05050730 01861868
7474703a 2f2f6f63 73702e76 65726973 69676e2e 636f6d30 12060355 1d130101
ff040830 060101ff 02010030 70060355 1d200469 30673065 060b6086 480186f8
45010717 03305630 2806082b 06010505 07020116 1c687474 70733a2f 2f777777
2e766572 69736967 6e2e636f 6d2f6370 73302a06 082b0601 05050702 02301e1a
1c687474 70733a2f 2f777777 2e766572 69736967 6e2e636f 6d2f7270 61303406
03551d1f 042d302b 3029a027 a0258623 68747470 3a2f2f63 726c2e76 65726973
69676e2e 636f6d2f 70636133 2d67352e 63726c30 0e060355 1d0f0101 ff040403
02010630 6d06082b 06010505 07010c04 61305fa1 5da05b30 59305730 55160969
6d616765 2f676966 3021301f 30070605 2b0e0302 1a04148f e5d31a86 ac8d8e6b
c3cf806a d448182c 7b192e30 25162368 7474703a 2f2f6c6f 676f2e76 65726973
69676e2e 636f6d2f 76736c6f 676f2e67 69663028 0603551d 11042130 1fa41d30
1b311930 17060355 04031310 56657269 5369676e 4d504b49 2d322d36 301d0603
551d0e04 1604140d 445c1653 44c1827e 1d20ab25 f40163d8 be79a530 1f060355
1d230418 30168014 7fd365a7 c2ddecbb f03009f3 4339fa02 af333133 300d0609
2a864886 f70d0101 05050003 82010100 0c8324ef ddc30cd9 589cfe36 b6eb8a80
4bd1a3f7 9df3cc53 ef829ea3 a1e697c1 589d756c e01d1b4c fad1c12d 05c0ea6e
b2227055 d9203340 3307c265 83fa8f43 379bea0e 9a6c70ee f69c803b d937f47a
6decd018 7d494aca 99c71928 a2bed877 24f78526 866d8705 404167d1 273aeddc
481d22cd 0b0b8bbc f4b17bfd b499a8e9 762ae11a 2d876e74 d388dd1e 22c6df16
b62b8214 0a945cf2 50ecafce ff62370d ad65d306 4153ed02 14c8b558 28a1ace0
5becb37f 954afb03 c8ad26db e6667812 4ad99f42 fbe198e6 42839b8f 8f6724e8
6119b5dd cdb50b26 058ec36e c4c875b8 46cfe218 065ea9ae a8819a47 16de0c28
6c2527b9 deb78458 c61f381e a4c4cb66
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Can ping from Windows to Mac but not from Mac to Windows
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Ton.There can be multiple problems here:
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Mac Mini PPC Mac OS X (10.4.6) -
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Weired issue odd IP's can ping the VIP and even can't on the Nexus 9K switch.
Hello experts!
we have two nexus 9k core, attached to the HP Blade v7000 chasis and VPC configured. All Vlans are HSRP are configured. VPC is configured successfully. But the weird this is that source IP address 10.1.2.3 can ping the dest VIP (on the loadblanacer) but 10.1.2.4 can't ie all odd IP's can ping the vip and even IP's can't ping and this is happening in all other Vlans. No firewall no security applience ... windows firewalls are turned off, no ACL's on the swtiches. If I shut down the interface on nexus 1 then all IP's can ping the VIP, as soon as I unshut the interface then .4 stops pinging, and if I shutdown the interface on nexus 2 then all IP's can ping. 10 gig links are connected to Flex fabric card and vpc port channel is up. Any thoughts or help ?
Nexus 1 Nexus 2Hello experts!
we have two nexus 9k core, attached to the HP Blade v7000 chasis and VPC configured. All Vlans are HSRP are configured. VPC is configured successfully. But the weird this is that source IP address 10.1.2.3 can ping the dest VIP (on the loadblanacer) but 10.1.2.4 can't ie all odd IP's can ping the vip and even IP's can't ping and this is happening in all other Vlans. No firewall no security applience ... windows firewalls are turned off, no ACL's on the swtiches. If I shut down the interface on nexus 1 then all IP's can ping the VIP, as soon as I unshut the interface then .4 stops pinging, and if I shutdown the interface on nexus 2 then all IP's can ping. 10 gig links are connected to Flex fabric card and vpc port channel is up. Any thoughts or help ?
Nexus 1 Nexus 2 -
Weired issue odd IP's can ping the VIP and even can't!
Hello experts!
we have two nexus 9k core, attached to the HP Blade v7000 chasis and VPC configured. All Vlans are HSRP are configured. VPC is configured successfully. But the weird this is that source IP address 10.1.2.3 can ping the dest VIP (on the loadblanacer) but 10.1.2.4 can't ie all odd IP's can ping the vip and even IP's can't ping and this is happening in all other Vlans. No firewall no security applience ... windows firewalls are turned off, no ACL's on the swtiches. If I shut down the interface on nexus 1 then all IP's can ping the VIP, as soon as I unshut the interface then .4 stops pinging, and if I shutdown the interface on nexus 2 then all IP's can ping. 10 gig links are connected to Flex fabric card and vpc port channel is up. Any thoughts or help ?
Nexus 1 Nexus 2Nexus 1
show hsrp active brief
P indicates configured to preempt.
|
Interface Grp Prio P State Active addr Standby addr Group addr
Vlan99 1 120 P Active local 10.104.0.3 10.104.0.1 (conf)
Vlan160 5 120 P Active local 10.104.5.3 10.104.5.1 (conf)
Vlan200 6 120 P Active local 10.104.6.3 10.104.6.1 (conf)
Vlan210 7 120 P Active local 10.104.7.3 10.104.7.1 (conf)
Vlan310 9 120 P Active local 10.104.9.3 10.104.9.1 (conf)
Vlan350 11 120 P Active local 10.104.11.3 10.104.11.1 (conf)
Vlan450 13 120 P Active local 10.104.13.3 10.104.13.1 (conf)
Vlan700 14 120 P Active local 10.104.14.6 10.104.14.4 (conf)
Vlan750 15 120 P Active local 10.104.15.3 10.104.15.1 (conf)
=======================
Nexus 2
show hsrp active brief
P indicates configured to preempt.
|
Interface Grp Prio P State Active addr Standby addr Group addr
Vlan100 3 120 P Active local 10.104.2.2 10.104.2.1
(conf)
Vlan150 4 120 P Active local 10.104.4.2 10.104.4.1
(conf)
Vlan199 2 120 P Active local 10.104.1.2 10.104.1.1
(conf)
Vlan300 8 120 P Active local 10.104.8.2 10.104.8.1
(conf)
Vlan320 10 120 P Active local 10.104.10.2 10.104.10.1
(conf)
Vlan400 12 120 P Active local 10.104.12.2 10.104.12.1
(conf)
Vlan760 16 120 P Active local 10.104.16.2 10.104.16.1 -
Failed to connect to the server, specify a valid server name and ID and pw
I am trying to install business one on a clients application server, where their sql server software is installed on a different server. When I get to the point of the installation where it asks for connection information: sql type, sql server name, logon and password, it fails after entering the correct info. I have double checked this info, typed it repeatedly and correctly and I continue to receive the following error: Failed to connect to the server, specify a valid server name and ID and password and try again. Can anyone lead me in the right direction to determine what my issue is? I can connect to sql server with the sa logon, on the sql server and I can access/ping the sql server from the application server, I just can't connect to sql server through the installation. I checked the sql server settings that I know of, so I don't know if it is an issue there or if it is a port issue or what.
Thanks for any help.Following is whjat the customers IT team reported they did to get the install running:
RIGHT! Worked it out! It wasn't firewall in the end at all, it was that the SAP B1 installation isn't aware of SQL Server 2008 R2 (version 10.50.x.x).
The vbscript was looking for the presence of SQL Server 2008 (version 10.0.x.x) in the registry and not by scanning ports or suchlike.
If you use the autorun installation from this folder; E:\BusinessEvolution\Software\SAP_Extract_via_WINZIP it should work fine - I've modified the checksql.htm to look for SQL 2008 R2 and now autorun goes past that first problem.
Not sure if that will be any help to you? In that instance I think we were installing 8.8 PL17...
The upgrade frpm there to 8.81 PL07 worked fine -
Customizing server.name and server.port in services-config.xml
Hi
How can i find out what does BlazeDs use for server.name and server.port in
url="http://{server.name}:{server.port}/{context.root}/messagebroker/amf"
can i customize those values?
thank youMete
Thank you for your reply
So context.root is resolved at compile time and server & port at runtime
Do you have an example or a link that shows / explain how to create custom tokens replaced by JVM options?
I have an issue where if i install my app on http://www.mydomain.com/mycontext/, it loads but will display the following message when making server call using Safari
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Notte that it works on IE7 when accessing http://www.mydomain.com/mycontext/
and that it works great with all browsers on http://localhost:8080/mycontextroot
Would you know what is the best way to debug this issue?
Thank you
matt -
Scan to Email Error Message "cannot connect to server. check server name and address"
I have a HP Officejet Pro 8600 Plus.
I've been using this printer for several months. Now am getting an ERROR message when I try to scan to email that it "cannot connect to server. check server name and address"
I'm not sure how to check this. We can all still print remotely via the internet connection.
Anyone have any ideas?Thanks for the info.,
Did you recently change your operating system or network router that started to cause this error?
Check out this thread - http://h30434.www3.hp.com/t5/Scanning-Faxing-and-Copying/Configuring-quot-Scan-To-E-mail-quot-on-HP-...
You may also need to change the printer DNS settings manually - http://h30434.www3.hp.com/t5/Printer-All-in-One-Install-Setup/HP-8500-Scan-to-Email-setup-cant-conne...
Thanks
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