User guide

E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
17-11
F
ORWARDING
M
ODES
To configure port translation mode, use the following command:
create slb vip <vipname> pool <poolname> mode port-translation
<ipaddress> {- <upper_ipaddress>}:{<L4Port>}
G
O
G
O
M
ODE
GoGo mode is a very fast (line rate) method of server load balancing. GoGo mode
forwards traffic without manipulating packet content. Session persistence is maintained
using IP source address persistence information.
Traffic is optimally balanced across groups of 2, 4, or 8 directly attached servers.
Because servers are always directly attached, there is no need to configure nodes, pools,
or VIPs. In order to use GoGo mode, all servers are configured with the same MAC and
IP addresses. As with any server load balancing application, the content must be
duplicated on all physical servers.
In GoGo mode, the load balancing method is fixed, and is based on a hashing of the
server IP address. All GoGo mode traffic exhibits persistence based on source IP
information. That is, a given source address will be mapped to one and only one
physical server.
Figure 17-4 shows GoGo mode.
Figure 17-4: GoGo mode
In Figure 17-4, the switch is configured to balance all traffic sent to the VIP based on the
client IP address.
EW_040
Servers configured to use
same IP and MAC addresses
Server 1 192.168.200.1
MAC 00-00-00-CO-FF-EE
Server 2 192.168.200.1
MAC 00-00-00-CO-FF-EE
SLB switch Gogo-Mode configured
for ports 29-32
No other configuration necessary
Clients Servers