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DES-7200 Configuration Guide Chapter 9 NLB Group Configuration
9-3
Caution
1. The reflector port can only be a layer-2 switching port (you cannot
configure L2AP as the reflector port), and no other configurations
are allowed on the reflector port.
2. The cluster server shall communicate with the device through the
SVI, rather than the Routed Port.
9.1.3 Working principle
Taking Fig 1 as the example, below we will introduce the working principle of
cluster service:
Step 1: User sends IP packets (the destination IP address of such packets is
the IP address of cluster: 192.168.1.10)
Step 2: IP packets reach the core switch through routing addressing
Step 3A: The scenario in which reflector port is needed: After IP packets enter
into the core switch through Gi 2/1, they are sent to the reflector port, which
will relay IP packets to the destination port (Gi 1/1, Gi 1/2).
Step 3B: The scenario in which reflector port is not needed: After IP packets
enter into the core switch through Gi 2/1, they are directly routed to the
destination port (Gi 1/1, Gi 1/2).
Step 4: IP packets are received by the master server and slave server in the
AC cluster.
9.1.4 Protocol specification
NA
9.2 Default configurations
The following table describes the default configurations of NLB Group.
Function Default setting
NLB Group service Disabled