[id='jgroups-ports_{context}']
= TCP and UDP ports for cluster traffic

{brandname} uses the following ports for cluster transport messages:

[%header,cols=3*]
|===
|Default Port
|Protocol
|Description

|`7800`
|TCP/UDP
|JGroups cluster bind port

|`46655`
|UDP
|JGroups multicast

m|57800
|TCP
|Failure detection is provided by `FD_SOCK2`.

|===

[discrete]
== Cross-site replication

{brandname} uses the following ports for the JGroups RELAY2 protocol:

`7900`:: For {brandname} clusters running on {k8s}.
`7801`:: For other deployments.
