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diff --git a/docs/appendix/examples/wan-load-balancing.rst b/docs/appendix/examples/wan-load-balancing.rst deleted file mode 100644 index 7093defe..00000000 --- a/docs/appendix/examples/wan-load-balancing.rst +++ /dev/null @@ -1,170 +0,0 @@ -.. _wan-load-balancing: - -WAN Load Balancer examples -========================== - - -Example 1: Distributing load evenly ------------------------------------ - -The setup used in this example is shown in the following diagram: - -.. image:: /_static/images/Wan_load_balancing1.png - :width: 80% - :align: center - :alt: Network Topology Diagram - - -Overview -^^^^^^^^ - * All traffic coming in trough eth2 is balanced between eth0 and eth1 - on the router. - * Pings will be sent to four targets for health testing (33.44.55.66, - 44.55.66.77, 55.66.77.88 and 66.77.88.99). - * All outgoing packets are assigned the source address of the assigned - interface (SNAT). - * eth0 is set to be removed from the load balancer's interface pool - after 5 ping failures, eth1 will be removed after 4 ping failures. - -Create static routes to ping targets -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Create static routes through the two ISPs towards the ping targets and -commit the changes: - -.. code-block:: none - - set protocols static route 33.44.55.66/32 next-hop 11.22.33.1 - set protocols static route 44.55.66.77/32 next-hop 11.22.33.1 - set protocols static route 55.66.77.88/32 next-hop 22.33.44.1 - set protocols static route 66.77.88.99/32 next-hop 22.33.44.1 - -Configure the load balancer -^^^^^^^^^^^^^^^^^^^^^^^^^^^ -Configure the WAN load balancer with the parameters described above: - -.. code-block:: none - - set load-balancing wan interface-health eth0 failure-count 5 - set load-balancing wan interface-health eth0 nexthop 11.22.33.1 - set load-balancing wan interface-health eth0 test 10 type ping - set load-balancing wan interface-health eth0 test 10 target 33.44.55.66 - set load-balancing wan interface-health eth0 test 20 type ping - set load-balancing wan interface-health eth0 test 20 target 44.55.66.77 - set load-balancing wan interface-health eth1 failure-count 4 - set load-balancing wan interface-health eth1 nexthop 22.33.44.1 - set load-balancing wan interface-health eth1 test 10 type ping - set load-balancing wan interface-health eth1 test 10 target 55.66.77.88 - set load-balancing wan interface-health eth1 test 20 type ping - set load-balancing wan interface-health eth1 test 20 target 66.77.88.99 - set load-balancing wan rule 10 inbound-interface eth2 - set load-balancing wan rule 10 interface eth0 - set load-balancing wan rule 10 interface eth1 - -Example 2: Failover based on interface weights ----------------------------------------------- - -This examples uses the failover mode. - -Overview -^^^^^^^^ -In this example eth0 is the primary interface and eth1 is the secondary -interface to provide simple failover functionality. If eth0 fails, eth1 -takes over. - -Create interface weight based configuration -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -The configuration steps are the same as in the previous example, except -rule 10 so we keep the configuration, remove rule 10 and add a new rule -for the failover mode: - -.. code-block:: none - - delete load-balancing wan rule 10 - set load-balancing wan rule 10 failover - set load-balancing wan rule 10 inbound-interface eth2 - set load-balancing wan rule 10 interface eth0 weight 10 - set load-balancing wan rule 10 interface eth1 weight 1 - -Example 3: Failover based on rule order ---------------------------------------- - -The previous example used the failover command to send traffic thorugh -eth1 if eth0 fails. In this example failover functionality is provided -by rule order. - -Overview -^^^^^^^^ -Two rules will be created, the first rule directs traffic coming in -from eth2 to eth0 and the second rule directs the traffic to eth1. If -eth0 fails the first rule is bypassed and the second rule matches, -directing traffic to eth1. - -Create rule order based configuration -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -We keep the configurtation from the previous example, delete rule 10 -and create the two new rules as described: - -.. code-block:: none - - delete load-balancing wan rule 10 - set load-balancing wan rule 10 inbound-interface eth2 - set load-balancing wan rule 10 interface eth0 - set load-balancing wan rule 20 inbound-interface eth2 - set load-balancing wan rule 20 interface eth1 - -Example 4: Failover based on rule order - priority traffic ----------------------------------------------------------- - -A rule order for prioritising traffic is useful in scenarios where the -secondary link has a lower speed and should only carry high priority -traffic. It is assumed for this example that eth1 is connected to a -slower connection than eth0 and should prioritise VoIP traffic. - -Overview -^^^^^^^^ -A rule order for prioritising traffic is useful in scenarios where the -secondary link has a lower speed and should only carry high priority -traffic. It is assumed for this example that eth1 is connected to a -slower connection than eth0 and should prioritise VoIP traffic. - -Create rule order based configuration with low speed secondary link -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -We keep the configuration from the previous example, delete rule 20 and -create a new rule as described: - -.. code-block:: none - - delete load-balancing wan rule 20 - set load-balancing wan rule 20 inbound-interface eth2 - set load-balancing wan rule 20 interface eth1 - set load-balancing wan rule 20 destination port sip - set load-balancing wan rule 20 protocol tcp - set protocols static route 0.0.0.0/0 next-hop 11.22.33.1 - -Example 5: Exclude traffic from load balancing ----------------------------------------------- - -In this example two LAN interfaces exist in different subnets instead -of one like in the previous examples: - -.. image:: /_static/images/Wan_load_balancing_exclude1.png - :width: 80% - :align: center - :alt: Network Topology Diagram - -Adding a rule for the second interface -^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - -Based on the previous example, another rule for traffic from the second -interface eth3 can be added to the load balancer. However, traffic meant -to flow between the LAN subnets will be sent to eth0 and eth1 as well. -To prevent this, another rule is required. This rule excludes traffic -between the local subnets from the load balancer. It also excludes -locally-sources packets (required for web caching with load balancing). -eth+ is used as an alias that refers to all ethernet interfaces: - -.. code-block:: none - - set load-balancing wan rule 5 exclude - set load-balancing wan rule 5 inbound-interface eth+ - set load-balancing wan rule 5 destination address 10.0.0.0/8 |