Networking Posts about TCP/IP, network hardware, traffic analysis and general networking. The Ethertype value, part 1 To understand the specific usage of the Ethertype field ESXi virtual machine network statistics How to read “show interface” like statistics from the virtual switch VMware virtual network interface cards – part 1 The difference between emulated and paravirtualized network adapters. VMware virtual network interface cards – part 2 Performance tests between VMXNET3, E1000E and the E1000 virtual adapters. Quickly access the network settings through ncpa.cpl The best way to reach the network card settings in Windows. IPv6: ICMPv6 The basic workings of ICMPv6 in IPv6. The IPv6 header Describe the content of the IPv6 packet header. The VLAN 802.1Q tag – part 1 How the 802.1Q tag fits into an Ethernet frame and which headers are modified. The tcpdump-uw tool Use the tcpdump-uw packet sniffer and learn the useful parameters. Actual throughput on Gigabit Ethernet How to calculate the actual bandwidth on a Gigabit network. The NC port scanner tool Using the NC tool to do port scanning from ESXi. Ethernet Flow Control How to activate and verify Flow Control on HP Procurve switches. Test network performance with the Iperf tool Use Iperf to control network throughput and TCP performance. BDPU Guard How to enable the new security feature of Spanning Tree BPDU Guard/Filter in ESXi. LACP and ESXi How to configure LACP in VMware ESXi Troubleshooting Jumbo Frames The correct parameters to verify Jumbo Frames networking in Windows and ESXi. Different Jumbo Frames settings on the same VLAN How the MSS negotiation process in the TCP three way handshake makes this possible.