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Load sharing NAT Server configuration example
Network requirements
As shown in Figure 72, three FTP servers are in the intranet to provide FTP services for external
users. Configure NAT so that these external users use the address 202.38.1.1/16 to access the
servers and the three FTP servers implement load sharing.
Figure 72 Network diagram
Configuration procedure
# Specify IP addresses for the interfaces on the router. (Details not shown.)
# Create NAT Server group 0, and add members to the group.
<Router> system-view
[Router] nat server-group 0
[Router-nat-server-group-0] inside ip 10.110.10.1 port 21
[Router-nat-server-group-0] inside ip 10.110.10.2 port 21
[Router-nat-server-group-0] inside ip 10.110.10.3 port 21
[Router-nat-server-group-0] quit
# Associate NAT Server group 0 with GigabitEthernet 2/0/2 so that servers in the server group can
provide FTP services.
[Router] interface gigabitethernet 2/0/2
[Router-GigabitEthernet2/0/2] nat server protocol tcp global 202.38.1.1 ftp inside
server-group 0
[Router-GigabitEthernet2/0/2] quit
Verifying the configuration
# Verify that external hosts can access the internal FTP server group. (Details not shown.)
# Display all NAT configuration and statistics.
[Router] display nat all
NAT server group information:
Totally 1 NAT server groups.
Group Number Inside IP Port Weight
0 10.110.10.1 21 100
10.110.10.2 21 100
10.110.10.3 21 100
NAT internal server information:
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