D-Link DXS-3400 User Manual - Page 110

DXS-3400 Series Lite Layer 3 Stackable 10GbE Managed Switch Web UI Reference Guide Parameter Add A Mail Receiver Description Enter the email address of the receiver here. This string can be up to 254 characters long. Click the Add button to add a new SMTP email recipient. The fields that can be configured in Send a Test Mail to Allare described below: Parameter Subject Content Description Enter the subject of the email here. This string can be up to 128 characters long. Enter the content of the email here. This string can be up to 512 characters long. Click the Apply button to accept the changes made. Click the Delete All button to delete all the entries found in the display table. Click the Delete button to delete the specified entry. NLB FDB Settings This window is used to display and configure the Network Load Balancing (NLB) FDB settings. The Network Load Balancing (NLB) function is used to support the Microsoft server load balancing application where multiple servers can share the same IP address and MAC address. The requests from clients will be forwarded to all the servers, but will only be processed by one of them. The server can work in two different modes: • Unicast mode: The client uses a unicast MAC address as the destination MAC address to reach the server. • Multicast mode: The client uses a multicast MAC address as the destination MAC address to reach the server. This destination MAC address is called the shared MAC address. However, the server uses its own MAC address (rather than the shared MAC address) as the source MAC address in the reply packet. In other words, a NLB unicast address usually is not the source MAC address of a packet. When the received packet contains the destination MAC address matches the configured unicast MAC address, it will be forwarded to those configured ports, regardless of the VLAN membership configuration. Administrators cannot configure a static address of the MAC address table as a NLB address. However, if a MAC address is created as a NLB MAC address entry, the same MAC address can be still dynamically learnt in the Layer 2 MAC address table. In this situation, the NLB has higher priority; the dynamically learnt FDB entry won't take effect. To view the following window, click Management>NLB FDB Settings, as shown below: Figure 4-99NLB FDB Settings Window The fields that can be configured are described below: Parameter NLB Type VID Description Select the NLB type here. Options to choose from are Unicast and Multicast. After selecting Multicast as the NLB type, enter the VLAN ID used in this 100