Support for heterogeneous cluster
Citrix ADC appliance now supports a heterogeneous cluster in a cluster deployment. A heterogeneous cluster spans nodes of different Citrix ADC hardware and you can have a combination of different platforms in the same cluster.
The formation or supportability of a heterogeneous cluster is possible and limited only to MPX hardware platforms.
The supportability and formation of the heterogeneous cluster depend on certain Citrix ADC models. The following table lists the platforms that are supported in the formation of a heterogeneous cluster, with an equal number of packet engines.
|Number of Packet Engines||MPX Hardware Platforms||Supported MPX Hardware Platforms to form Heterogeneous Cluster|
|5||MPX 11500||MPX 14020|
|7||MPX 11515||MPX 14040|
|9||MPX 11530||MPX 14060|
The following table lists the platforms that are supported in the formation of a heterogeneous cluster, with an unequal number of packet engines.
|Hardware Platforms||Supported Hardware Platforms to form Heterogeneous Cluster|
|MPX 150XX||MPX 140XX|
For more information on how to form a heterogeneous cluster deployment of Citrix ADC MPX appliances with the different number of packet engines across different SSL chipsets, see the Heterogeneous cluster deployments section in SSL offloading configuration.
Before release 13.0 build 47.x, if you run the “join cluster” command from the node that has an unequal number of packet engines, the following error message appears: “Mismatch in the number of active PPEs between CCO and local node”.
Points to note
- The extra management CPU setting must be same on all the cluster nodes.
- The newly added node must have the same capacity on the data planes and backplane, as that of existing cluster nodes.
- If there are mixed platform devices supporting different ciphers, then the cluster would agree upon a common cipher list.