Troubleshooting slow network applications with Wireshark
I’ve had some fun today troubleshooting the intermittent network slow down we get at work. Through absorbing several articles, videos, and forum posts, I think I have found a better way of...
View ArticleShow more details on wireless networks using Win7
I read a few good tips the other day on this post: http://www.lovemytool.com/blog/2010/05/wifi-diagnostics-from-windows-7-or-vista-command-prompt-by-tony-fortunato.html To view the normal network...
View ArticleConnect an iSCSI SAN to Server 2008 R2 using the Microsoft iSCSI Initiator
Scenario You’ve installed FreeNAS 8.2 and configured it as a free iSCSI SAN. Now you need to connect to the iSCSI SAN using an iSCSI Initiator. Solution Note: This process is the same for both Server...
View ArticleUsing the DHCP Split-Scope Wizard on Server 2008 R2
Problem You want to provide some fault tolerance for DHCP, so you plan to add another DHCP server to your network. You used to have to set up the scopes and exclusions manually, but now you can use the...
View ArticleNLB Unicast vs Multicast
I just read this great post that explains the differences between Unicast and Multicast when using Network Load Balancing (NLB):...
View ArticleAdding a new port to a HP Network Team
Problem A port has died on your NIC and is showing as disconnected in your HP Network Team. The Network Team is no longer redundant. Solution You need to add a new port and drop the disconnected port,...
View ArticleDNS Scavenging Explained
I just read this excellent post explaining DNS Scavenging: http://blogs.technet.com/b/networking/archive/2008/03/19/don-t-be-afraid-of-dns-scavenging-just-be-patient.aspx Well worth a read, as this...
View ArticleAn error occurred due to invalid data in the XML file used by this...
Scenario You’ve updated your HP server using the latest ProLiant Support Pack, but after a reboot your network connections are down, and you get the following message when trying to open the HP Network...
View ArticleCommands to troubleshoot connectivity through a Cisco ASA
Packet Tracer packet-tracer input <INTERFACE> <PROTOCOL> <SOURCE-IP> <SOURCE-PORT> <DESTINATION-IP> <DESTINATION-PORT> packet-tracer input external tcp 11.22.33.44...
View ArticleCommands to troubleshoot connectivity through a vShield Edge
Packet Capture debug packet display interface INTERFACE host_EXTERNALIP-OF-DESTINATION-EDGE_and_tcp_port_PORT eg: debug packet display interface any host_11.22.33.44_and_tcp_port_80 debug packet...
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