Restrictions 
Only Administrator, Operator and Power-User level users can issue this command. 
 
Example 
To delete the NLB unicast FDB entry, for the product that support the VLAN information on the 
unicast forwarding: 
Command: delete nlb unicast_fdb vlanid 1 02-BF-01-01-01-01 
 
Success. 
 
DGS-3120-24TC:admin# 
 
51-4  create nlb multicast_fdb 
Description 
This command is used to create a NLB multicast FDB entry. The number of supported entries is 
project dependent. 
The network load balancing command set 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 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 use unicast MAC address as the destination MAC to reach the server. In multicast mode, 
the client use the multicast MAC address as the destination MAC to reach the server. Regarding of 
the mode, this destination Mac is the named 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 mutual exclusive with the L2 multicast entry. 
 
Format 
create nlb multicast_fdb [<vlan_name 32> | vlanid <vlanid>] <macaddr> 
 
Parameters