H3C Technologies H3C SecPath F1000-E - Manual (Page 884)

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Figure 20 Create a virtual service for Layer 4 server load balancing
Table 5 describes the configuration items for creating a virtual service for server load balancing.
Table 5 Virtual service configuration items for server load balancing
Item Description
Virtual Service Name Set a virtual service name, which uniquely identifies a virtual service.
VPN Instance Select the VPN instance to which the virtual service belongs.
Virtual Service IP
Mask
Specifies the VSIP and VSIP mask of the cluster, used for requesting services.
Protocol Select the protocol used by the cluster to provide services.
Enable Forced LB
When you select UDP as the protocol, set whether to enable the mechanism of
distributing services based on packets.
The packet exchange for some UDP-based services, such as DNS, RADIUS, and
so on, can be completed in one exchanging process, and in some specific
scenarios, the quintuple of packets is the same. In this case, load balancing
cannot be implemented on service packets based on the session-based load
balancing mode. Therefore, forced load balancing needs to be enabled to
implement load balancing of service packets according to the mechanism of
distributing services based on packets.
IMPORTANT:
Forced load balancing of fragmented packets is implemented based on virtual
fragment reassembly. Therefore, you must enable virtual fragment
reassembly on the zone to which the interfaces that process LB packets
belong. For more information, see Session Management.
Port Set the port number used by the cluster to provide services.