leeann92571
New Member
Hello all,
Have SBS 2003 server domain, dhcp, DNS behind Cisco 5500. All machines running XP ok. The 1 machine running Vista Ult ran ok for about 3 weeks, now it drops network.
VIsta machine up to date on patches, drivers, on domain, setup initially as dhcp getting IP and DNS from SBS, with the SBS as the main DNS and our provider as the secondary DNS. Had mapped drivers with FQDN and IP mapped drives. Also setup with Exchange.
Now the networking dropping....
Suddenly it just started loosing the connection. At first, when it lost the mapped drives and lost connection to exchange in outlook, I could do a ping to other computers, outside computers (4.2.2.2) but I could not ping the SBS/DNS server.
So i did an ipconfig release/renew, flush dns, it comes back on network. temporarily. No set reason to drop again and it could be from 3 to 30 minute intervals.
I removed the comptuer from the SBS domain, reconnected the Vista to the domain, turned off the feature to sleep the nic card, checked power settings, made the IP static, DNS static, forced the DNS ip to the server, ran the windows diag, received the error Cannot Connect to the primary DNS server, turned off the TCP scaling, got the windows network diag again stating to fix the tcp settings for proper setup, did that.
What works quickly is by changing the static IP address to the next interval and it comes back online quickly. User did that to get back online quick, but what else is there that I could be missing?
I need to check the router, as it may be incompatible with the TCP scaling, but I don't know what to check in there. I log into the ASDM/ASA but I am only moderately knowledgable in there.
Please any pointers, or something I have missed?
thanks so much!
Lee Ann
Addt Info>
on the cisco asa syslog tells me:
Inbound TCP connection denied from 192.168.101.195/63954 (vista pc) to 192.168.101.21/2222 (SBS svr) flags PSH ACK on interface inside
no clue what to do to resolve that. it appears the access lists needs updated or give access in the ASA? not sure..i'll keep plugging away but could use all suggestions!
thanks!
So it shows on my router that UDP connectsion for DNS querys are being denied. HUMMM.
Did do a "no fixup protocol dns" to the asa to disable the maximum length packet and i did notice the client had netbios enabled so that was disabled.
still not working, network is dropping still intermittently.
Have SBS 2003 server domain, dhcp, DNS behind Cisco 5500. All machines running XP ok. The 1 machine running Vista Ult ran ok for about 3 weeks, now it drops network.
VIsta machine up to date on patches, drivers, on domain, setup initially as dhcp getting IP and DNS from SBS, with the SBS as the main DNS and our provider as the secondary DNS. Had mapped drivers with FQDN and IP mapped drives. Also setup with Exchange.
Now the networking dropping....
Suddenly it just started loosing the connection. At first, when it lost the mapped drives and lost connection to exchange in outlook, I could do a ping to other computers, outside computers (4.2.2.2) but I could not ping the SBS/DNS server.
So i did an ipconfig release/renew, flush dns, it comes back on network. temporarily. No set reason to drop again and it could be from 3 to 30 minute intervals.
I removed the comptuer from the SBS domain, reconnected the Vista to the domain, turned off the feature to sleep the nic card, checked power settings, made the IP static, DNS static, forced the DNS ip to the server, ran the windows diag, received the error Cannot Connect to the primary DNS server, turned off the TCP scaling, got the windows network diag again stating to fix the tcp settings for proper setup, did that.
What works quickly is by changing the static IP address to the next interval and it comes back online quickly. User did that to get back online quick, but what else is there that I could be missing?
I need to check the router, as it may be incompatible with the TCP scaling, but I don't know what to check in there. I log into the ASDM/ASA but I am only moderately knowledgable in there.
Please any pointers, or something I have missed?
thanks so much!
Lee Ann
Addt Info>
on the cisco asa syslog tells me:
Inbound TCP connection denied from 192.168.101.195/63954 (vista pc) to 192.168.101.21/2222 (SBS svr) flags PSH ACK on interface inside
no clue what to do to resolve that. it appears the access lists needs updated or give access in the ASA? not sure..i'll keep plugging away but could use all suggestions!
thanks!
So it shows on my router that UDP connectsion for DNS querys are being denied. HUMMM.
Did do a "no fixup protocol dns" to the asa to disable the maximum length packet and i did notice the client had netbios enabled so that was disabled.
still not working, network is dropping still intermittently.
Last edited: