|
|
I recently found a problem with some clients on my LAN. The clients get
addresses from DHCP, they are able to connect to the LAN/work, no problem.
But when I attempt to ping their IP or host name both time out.
I issue the -a option to resolve addresses to host names, I get -- pinging
hostname.X.X (fully qualitied name), shows the IP address, then.... times out.
What i did with a few clients I'm having trouble with is ---
I went to my DNS server, deleted their A record, went to their desktop,
issued the ipconfig /flushdns, then ipconfig /registerdns both commands
were successful.
I went back to my DNS server and saw they populated DNS again with their
original leased DHCP address. I re-tried to ping host and IP and still no
luck.
So far i came across 5 desktops where I can not ping. I try to ping them
from my desktop, my servers, DNS server, no good. I can only ping them which
at their desktops.
The desktops are all XP professional SP3, my servers are mainly 2003 SP2/few
2000 SP4 servers, DNS/DHCP/WINS are running on Server 2003 SP2.
Can someone help ---- as this is really confusing, why I can't ping IP or
host name on some desktops. Nothing has changed with DNS.
I do greatly appreciate assistance in helping me resolve this issue.
Thank you,
Bob
|
|
Hello Bob,
Do you have any firewall running? Please post an unedited ipconfig /all from
the DNS server and one client. What kind of zones do your run?
Best regards
Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm
[Quoted Text] > I recently found a problem with some clients on my LAN. The clients
> get addresses from DHCP, they are able to connect to the LAN/work, no
> problem. But when I attempt to ping their IP or host name both time
> out.
>
> I issue the -a option to resolve addresses to host names, I get --
> pinging hostname.X.X (fully qualitied name), shows the IP address,
> then.... times out.
>
> What i did with a few clients I'm having trouble with is ---
>
> I went to my DNS server, deleted their A record, went to their
> desktop, issued the ipconfig /flushdns, then ipconfig /registerdns
> both commands were successful.
>
> I went back to my DNS server and saw they populated DNS again with
> their original leased DHCP address. I re-tried to ping host and IP and
> still no luck.
>
> So far i came across 5 desktops where I can not ping. I try to ping
> them from my desktop, my servers, DNS server, no good. I can only ping
> them which at their desktops.
>
> The desktops are all XP professional SP3, my servers are mainly 2003
> SP2/few 2000 SP4 servers, DNS/DHCP/WINS are running on Server 2003
> SP2.
>
> Can someone help ---- as this is really confusing, why I can't ping IP
> or host name on some desktops. Nothing has changed with DNS.
>
> I do greatly appreciate assistance in helping me resolve this issue.
>
> Thank you,
> Bob
|
|
Hi Bob,
like Meinolf already wrote, it sounds like firewall/routing. Are these
clients in the same network segment (perhaps there's a router that doesn't
allow ICMP)? Or the clients firewall refuses to answer pings.
Cheers!
Jens
"Bob" wrote:
[Quoted Text] > I recently found a problem with some clients on my LAN. The clients get
> addresses from DHCP, they are able to connect to the LAN/work, no problem.
> But when I attempt to ping their IP or host name both time out.
>
> I issue the -a option to resolve addresses to host names, I get -- pinging
> hostname.X.X (fully qualitied name), shows the IP address, then.... times out.
>
> What i did with a few clients I'm having trouble with is ---
>
> I went to my DNS server, deleted their A record, went to their desktop,
> issued the ipconfig /flushdns, then ipconfig /registerdns both commands
> were successful.
>
> I went back to my DNS server and saw they populated DNS again with their
> original leased DHCP address. I re-tried to ping host and IP and still no
> luck.
>
> So far i came across 5 desktops where I can not ping. I try to ping them
> from my desktop, my servers, DNS server, no good. I can only ping them which
> at their desktops.
>
> The desktops are all XP professional SP3, my servers are mainly 2003 SP2/few
> 2000 SP4 servers, DNS/DHCP/WINS are running on Server 2003 SP2.
>
> Can someone help ---- as this is really confusing, why I can't ping IP or
> host name on some desktops. Nothing has changed with DNS.
>
> I do greatly appreciate assistance in helping me resolve this issue.
>
> Thank you,
> Bob
>
|
|
"Jens Imsan" wrote:
[Quoted Text] > Hi Bob,
>
> like Meinolf already wrote, it sounds like firewall/routing. Are these
> clients in the same network segment (perhaps there's a router that doesn't
> allow ICMP)? Or the clients firewall refuses to answer pings.
>
> Cheers!
> Jens
They "had" the windows XP SP2 firewall on, I turned it off - still same
problems. The clients are on the same network segment, we have 1 facility all
are on 192.168.0
Below is the result of pinging one host on the DNS server ---
Thanks,
Bob
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.
C:\Documents and Settings\Administrator.AMALGAMATED>cd\
C:\>ping dcoates
Pinging dcoates.amalgamated.com [192.168.0.38] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.0.38:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
>
> "Bob" wrote:
>
> > I recently found a problem with some clients on my LAN. The clients get
> > addresses from DHCP, they are able to connect to the LAN/work, no problem.
> > But when I attempt to ping their IP or host name both time out.
> >
> > I issue the -a option to resolve addresses to host names, I get -- pinging
> > hostname.X.X (fully qualitied name), shows the IP address, then.... times out.
> >
> > What i did with a few clients I'm having trouble with is ---
> >
> > I went to my DNS server, deleted their A record, went to their desktop,
> > issued the ipconfig /flushdns, then ipconfig /registerdns both commands
> > were successful.
> >
> > I went back to my DNS server and saw they populated DNS again with their
> > original leased DHCP address. I re-tried to ping host and IP and still no
> > luck.
> >
> > So far i came across 5 desktops where I can not ping. I try to ping them
> > from my desktop, my servers, DNS server, no good. I can only ping them which
> > at their desktops.
> >
> > The desktops are all XP professional SP3, my servers are mainly 2003 SP2/few
> > 2000 SP4 servers, DNS/DHCP/WINS are running on Server 2003 SP2.
> >
> > Can someone help ---- as this is really confusing, why I can't ping IP or
> > host name on some desktops. Nothing has changed with DNS.
> >
> > I do greatly appreciate assistance in helping me resolve this issue.
> >
> > Thank you,
> > Bob
> >
|
|
"Meinolf Weber" wrote:
[Quoted Text] > Hello Bob, > > Again, please post the ipconfig /all from server and one workstation. > > Best regards > > Meinolf Weber > Disclaimer: This posting is provided "AS IS" with no warranties, and confers > no rights. > ** Please do NOT email, only reply to Newsgroups > ** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm > >
Ok - here is the ipconfig /all from two of my servers that are both DNS/WINS
servers --- then below the two servers is one of the clients which I can not
ping by IP or Host name
Thanks,
Bob
Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.
C:\Documents and Settings\Administrator.AMALGAMATED>cd\
C:\>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : BACKUP
Primary Dns Suffix . . . . . . . : amalgamated.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : amalgamated.com
Ethernet adapter Intel Pro 1000 MT Gigabit Ethernet Adapter - Onboard:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection
Physical Address. . . . . . . . . : 00-C0-9F-40-11-F7
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.9
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.5
DNS Servers . . . . . . . . . . . : 192.168.0.9
192.168.0.161
Primary WINS Server . . . . . . . : 192.168.0.9
C:\>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : server3
Primary Dns Suffix . . . . . . . : amalgamated.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : amalgamated.com
Ethernet adapter NIC Team1:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : BASP Virtual Adapter
Physical Address. . . . . . . . . : 00-19-B9-EA-31-76
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.0.161
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.5
DNS Servers . . . . . . . . . . . : 192.168.0.161
192.168.0.9
Primary WINS Server . . . . . . . : 192.168.0.161
And here is one of the clients which I can not ping by IP or Hostname ---
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\dcoates>CD\
C:\>IPCONFIG /ALL
Windows IP Configuration
Host Name . . . . . . . . . . . . : Dcoates
Primary Dns Suffix . . . . . . . : amalgamated.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : amalgamated.com
amalgamated.com
Ethernet adapter {BD992447-4B19-4C48-A7AF-7A4A2B96601D}:
Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Check Point Virtual Network
Adapter
For SecureClient - Packet Scheduler Miniport
Physical Address. . . . . . . . . : 54-55-43-44-52-03
Ethernet adapter Wireless Network Connection:
Connection-specific DNS Suffix . : amalgamated.com
Description . . . . . . . . . . . : Cisco Systems 350 Series PCI
Wireles
s LAN Adapter
Physical Address. . . . . . . . . : 00-07-0E-B8-F4-23
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.38
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.5
DHCP Server . . . . . . . . . . . : 192.168.0.9
DNS Servers . . . . . . . . . . . : 192.168.0.9
192.168.0.161
Primary WINS Server . . . . . . . : 192.168.0.9
Secondary WINS Server . . . . . . : 192.168.0.161
Lease Obtained. . . . . . . . . . : Wednesday, October 22, 2008
9:07:48
AM
Lease Expires . . . . . . . . . . : Saturday, October 25, 2008
9:07:48 A
M
> > "Jens Imsan" wrote:
> >
> >> Hi Bob,
> >>
> >> like Meinolf already wrote, it sounds like firewall/routing. Are
> >> these clients in the same network segment (perhaps there's a router
> >> that doesn't allow ICMP)? Or the clients firewall refuses to answer
> >> pings.
> >>
> >> Cheers!
> >> Jens
> > They "had" the windows XP SP2 firewall on, I turned it off - still
> > same problems. The clients are on the same network segment, we have 1
> > facility all are on 192.168.0
> >
> > Below is the result of pinging one host on the DNS server ---
> >
> > Thanks,
> > Bob
> > Microsoft Windows [Version 5.2.3790]
> > (C) Copyright 1985-2003 Microsoft Corp.
> > C:\Documents and Settings\Administrator.AMALGAMATED>cd\
> >
> > C:\>ping dcoates
> >
> > Pinging dcoates.amalgamated.com [192.168.0.38] with 32 bytes of data:
> >
> > Request timed out.
> > Request timed out.
> > Request timed out.
> > Request timed out.
> > Ping statistics for 192.168.0.38:
> > Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
> >> "Bob" wrote:
> >>
> >>> I recently found a problem with some clients on my LAN. The clients
> >>> get addresses from DHCP, they are able to connect to the LAN/work,
> >>> no problem. But when I attempt to ping their IP or host name both
> >>> time out.
> >>>
> >>> I issue the -a option to resolve addresses to host names, I get --
> >>> pinging hostname.X.X (fully qualitied name), shows the IP address,
> >>> then.... times out.
> >>>
> >>> What i did with a few clients I'm having trouble with is ---
> >>>
> >>> I went to my DNS server, deleted their A record, went to their
> >>> desktop, issued the ipconfig /flushdns, then ipconfig /registerdns
> >>> both commands were successful.
> >>>
> >>> I went back to my DNS server and saw they populated DNS again with
> >>> their original leased DHCP address. I re-tried to ping host and IP
> >>> and still no luck.
> >>>
> >>> So far i came across 5 desktops where I can not ping. I try to ping
> >>> them from my desktop, my servers, DNS server, no good. I can only
> >>> ping them which at their desktops.
> >>>
> >>> The desktops are all XP professional SP3, my servers are mainly 2003
> >>> SP2/few 2000 SP4 servers, DNS/DHCP/WINS are running on Server 2003
> >>> SP2.
> >>>
> >>> Can someone help ---- as this is really confusing, why I can't ping
> >>> IP or host name on some desktops. Nothing has changed with DNS.
> >>>
> >>> I do greatly appreciate assistance in helping me resolve this issue.
> >>>
> >>> Thank you,
> >>> Bob
>
>
>
|
|
|