xStack
®
DGS-3600 Series Layer 3 Managed Gigabit Ethernet Switch
NLB Multicast FDB Settings
The Switch supports Network Load Balancing (NLB). This is a MAC forwarding control for supporting 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 servers, but will only be processed by one of them. The server can work in two different modes – unicast mode
and multicast mode. In unicast mode, the client uses a unicast MAC address as the destination MAC to reach the server. In
multicast mode, the client uses a multicast MAC address as the destination MAC to reach the server. The destination MAC is the
shared MAC. The server uses its own MAC address (rather than the shared MAC) as the source MAC address of the reply
packet.The NLB multicast FDB entry will be mutually exclusive with the L2 multicast entry. At the current time, only multicase
mode is supported.
To view this window, click L2 Features > NLB Multicast FDB Settings, as shown below:
Figure 3- 82. NLB Multicast FDB Table window
To remove an entry from the table, click its corresponding
under the Delete heading.
Clicking the Add button will reveal the following window to configure:
Figure 3- 83. NLB Multicast FDB Settings - Add window
The following fields can be set:
Parameter Description
VLAN Name
Click the radio button and enter the VLAN of the NLB multicast FDB entry to be created.
VID (1-4094)
Click the radio button and enter the VLAN by the VLAN ID.
MAC Address
Enter the MAC address of the NLB multicast FDB entry to be created.
Click Apply to create a new entry. To view the NLB Multicast FDB Table, click the hyperlinked Show All NLB Multicast FDB
Entries.
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