Citrix ByteMobile T1010, Installation, Configuration And Administration

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T-Series Traffic Director Installation, Configuration and Administration Guide 3-17
Configuring T1000 Load Balancing
Configuring T1000 Load Balancing
Once basic L3 configuration is defined, the load balancing configuration can be created. The
T1000 offers two different load balancing modes for use with the Unison platform:
• The T1000 performs firewall load balancing (FWLB), to transparently load balance
data plane traffic across OSNs in the direction of the Internet. Traffic passes through
the OSNs and transparently maintains its Layer 3 information. The T1000 exposes a
single IP address (or multiple, as necessary) as the destination for this traffic. The
T1000 uses
session persistency to ensure that traffic returning from the Internet is
routed back to the same OSN from which it originated.
• The T1000 also supports optional server load balancing (SLB) in deployments
where the Unison cluster does not function in a transparent, inline mode, but instead
has a specific routable IP address. For example, if Unison WAP Gateway functions
are deployed, or NonInline mode is used with optimization clients, the Unison
cluster will have a specific IP address requiring server load balancing.
The general configuration sequence is as follows:
Step 1 Enable the load balancing feature. See “Enabling Load Balancing and Configuring
Operating Modes” on page 3-17.
Step 2 Each OSN in the Unison cluster is considered a “server” from the perspective of the load
balancer. Add the ingress interfaces to a server configuration for each OSN. You will also
need to add the T1000 egress interfaces as servers. See
“Adding Servers” on page 3-18.
Step 3 Create services for load balancing. The configuration process is different depending on the
required load balancing mode (firewall or server). See
“Creating Services” on page 3-19.
Step 4 Define virtual servers and then bind the servers to the services defined in the previous step.
The configuration process is different depending on the required load balancing mode
(firewall or server). See
“Creating Services” on page 3-19.
Enabling Load Balancing and Configuring Operating Modes
A load balancing setup includes a virtual load-balancing server and multiple load-balanced
application servers (OSN application blades). The virtual server receives incoming client
requests, uses the load balancing algorithm to select an application server, and forwards the
requests to the selected application server.
The following configurations enable the load balancing feature, specify the global use of
client source IP, and disable the “prefer direct route” mode:
> enable ns feature LB
Done
> enable ns mode FR L3 USIP MBF Edge USNIP PMTUD
Done
> set lb parameter -preferDirectRoute NO
Done
> set lb parameter -vServerSpecificMac ENABLED
Done
> set l4param -l2ConnMethod Vlan
Done
> set rsskeytype -rsstype SYMMETRIC
Done