Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual
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Brocade Virtual ADX Server Load Balancing Guide
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Configuring Direct Server Return
2
To implement the configuration shown in
, configure Brocade Virtual ADX devices A and B.
Because multiple VIPs are mapped to the same ports on the same real servers, TCP/UDP port
binding is used. Thus, port 180 on VIP2 on Brocade Virtual ADX A and on VIP1 on Brocade Virtual
ADX B is a logical port that is bound to port 80 on the real servers. For more information, refer to
Note the dsr parameter on the port commands that add the HTTP port (TCP port 80) to the VIPs. To
enable L2 DSR for additional TCP/UDP ports, use the dsr parameter for each port when you add
the port to a VIP.
NOTE
Be sure you configure all the real servers on both Brocade Virtual ADX devices, and bind the VIPs on
each Brocade Virtual ADX to all the real servers.
Configuring Brocade Virtual ADX A
Notice that all four real servers must be configured, and bound to the VIPs, on both Brocade Virtual
ADX devices. Notice also that two HTTP ports are added to each real server. This type of
configuration requires that you use the TCP/UDP port binding feature to bind the ports on the two
real servers to the same port on the virtual server. For information, refer to
To configure the real servers, enter the following commands.
Virtual ADXA(config)#server real-name Real_Server_1 10.0.0.1
Virtual ADXA(config-rs-Real_Server_1)#port http
Virtual ADXA(config-rs-Real_Server_1)#port 180
Virtual ADXA(config-rs-Real_Server_1)#exit
Virtual ADXA(config)#server real-name Real_Server_2 10.0.0.2
Virtual ADXA(config-rs-Real_Server_2)#port http
Virtual ADXA(config-rs-Real_Server_2)#port 180
TABLE 7
DSR configuration example
Brocade
Virtual ADX
Domain name
Virtual IP (VIP)
address
VIP’s TCP
port
Real IP address
Real Server TCP
port
A
www.abc.com
VIP1:
10.157.22.100
80
Real Server 1:
10.0.0.1
Real Server 2:
10.0.0.2
80
80
A
www.def.com
VIP2:
10.157.22.101
80
Real Server 1:
10.0.1.1
Real Server 2:
10.0.1.2
180
180
B
www.abc.com
VIP1:
10.157.22.100
80
Real Server 3:
10.0.0.1
Real Server 4:
10.0.0.2
180
180
B
www.def.com
VIP2:
10.157.22.101
80
Real Server 3:
10.0.1.1
Real Server 4:
10.0.1.2
80
80