I am having an issue with unreliable pinging. Normally that wouldnt mean too much, but I need to build a new primary DC to replace the old 2003 one, and seeing as its a Domain Controller, network communication is kinda important. I cannot ping my soon to be old DC from the new server (all i get is "destination host unreachable") and I also cannot ping my own computer from the server, but I can ping the server from my computer. What really gets me is that every now and again, for a brief moment, I will be able to ping successfully, and then it will stop again. Also if I ping the new server from the old 2003 I one, I will then (for a time) be able to ping the old from the new. N:\>pathping 10.16.46.10 Tracing route to 8014042-dc01.schools.bristolbsf.net [10.16.46.10] over a maximum of 30 hops: 0 8014042-DC.schools.bristolbsf.net [10.16.46.61] 1 8014042-DC.schools.bristolbsf.net [10.16.46.61] reports: Destination host unreachable. Computing statistics for 25 seconds... Source to Here This Node/Link Hop RTT Lost/Sent = Pct Lost/Sent = Pct Address 0 8014042-DC.schools.bristolbsf.net [10.16.46.61] 100/ 100 =100% | 1 --- 100/ 100 =100% 0/ 100 = 0% 8014042-DC.schools.bristolbsf.net [0.0.0.0] Trace complete. N:\>route print =========================================================================== Interface List 17...14 fe b5 d1 89 f2 ......Broadcom BCM5709C NetXtreme II GigE (NDIS VBD Clie nt) #4 15...14 fe b5 d1 89 f0 ......Broadcom BCM5709C NetXtreme II GigE (NDIS VBD Clie nt) #3 12...14 fe b5 d1 89 ee ......Broadcom BCM5709C NetXtreme II GigE (NDIS VBD Clie nt) #2 11...14 fe b5 d1 89 f4 ......Broadcom BCM5709C NetXtreme II GigE (NDIS VBD Clie nt) 1...........................Software Loopback Interface 1 16...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3 19...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.16.46.1 10.16.46.61 276 10.16.46.0 255.255.255.128 On-link 10.16.46.61 276 10.16.46.61 255.255.255.255 On-link 10.16.46.61 276 10.16.46.127 255.255.255.255 On-link 10.16.46.61 276 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.16.46.61 276 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.16.46.61 276 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 10.16.46.1 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 15 276 fe80::/64 On-link 15 276 fe80::c906:ef74:ba08:8280/128 On-link 1 306 ff00::/8 On-link 15 276 ff00::/8 On-link =========================================================================== Persistent Routes: None Help please?

Hi Divus, The first thing i would recommend is to update your NIC drivers to the latest available one. Also also check the network card.Regards, Rafic If you found this post helpful, please give it a "Helpful" vote. If it answered your question, remember to mark it as an "Answer". This posting is provided "AS IS" with no warranties and confers no rights! Always test ANY suggestion in a test environment before implementing!

Hi, Apologies for my slow reply (forgot to turn on notifications). I have NetXtreme 2's and have update the cards from the Manufacturers website, but i still get the same issue. I have tried using different cards (even a totally different server) but to no avail.