AS Java Ports 

These ports are used for communication with the AS Java as part of the SAP NetWeaver AS. They are generated at installation time and when new cluster elements have to be created.

AS Java Ports

For the AS Java, 20 ports are available for the dispatcher element and 80 are available for the server elements, since five is the maximum number of ports for a server process. Therefore, no more than 16 server cluster elements can be created on one instance.

The default AS Java ports meet the following requirements:

●      The port value is a number over 50000

●      For each cluster element the ports begin with 50000+100*instance_number, where instance_number is a two digit number from 00 to 99 specifying the number of central instance and dialog instances.

You can see the instance number from the directory, where the AS Java is installed. Under /usr/sap/<SID>, there is a directory which name contains the instance name including the instance number, for example, JC40 (where 40 is the instance number).

○       For dispatcher cluster elements
The ports are created from 50000+100*instance_number+port_index, where port_index is a number from 0 to 19 inclusive.

Dispatcher port_index Values

Index	Port Name
0	HTTP port
1	HTTP SSL port
2	IIOP Initial Context port
3	IIOP SSL port
4	P4 port
5	P4 HTTP Tunneling port
6	P4 SSL port
7	IIOP port
8	Telnet port
10	JMS port

According to the formula mentioned above and the port_index values, the dispatcher ports for the AS Java are as follows (in the table below, NN corresponds to instance_number):

AS Java Dispatcher Ports

Service Name	Port Number	Default Value	Range (min-max)
HTTP	5NN00	50000	50000-59900
HTTP over SSL	5NN01	50001	50001-59901
IIOP	5NN07	50007	50007-59907
IIOP Initial Context	5NN02	50002	50002-59902
IIOP over SSL	5NN03	50003	50003-59903
P4	5NN04	50004	50004-59904
P4 over HTTP	5NN05	50005	50005-59905
P4 over SSL	5NN06	50006	50006-59906
Telnet	5NN08	50008	50008-59908
JMS	5NN10	50010	50010-59910

 

○       For server cluster elements
The ports are created from 50000+100*instance_number+20+n*5+port_index, where n is the number of server elements from 0 to 15 and port_index is from 0 to 4.

You can see the number of the server element from the installation directory of the AS Java. Under <Drive>:\usr\sap\<SAPSID>\<Instance_Name>\j2ee\cluster, there are server<Server_Number> directories representing the server processes in the AS Java. Their number depends on the number specified at installation time.

The ports for AS Java server3 with instance_number=15 are from 51535 (50000+100*15+20+3*5+0) to 51539 (50000+100*15+20+3*5+4).

Server port_index Values

Index	Port Name
0	Join port
1	Debug port

According to the formula mentioned above and the port_index values, the server ports for the AS Java are as follows:

AS Java Server Ports

Internal Port	Value
Server Join Port	For s0: 5NN20, for s1=5NN25, for s2=5NN30….for s15=5NN95, where s0, s1, s2,..s15 shows the number of server processes and NN is instance_number.
Server Debug Port	For s0: 5NN21, for s1=5NN26, for s2=5NN31….for s15=5NN96, where s0, s1, s2,..s15 shows the number of server processes and NN is instance_number.

Example

The port for P4 on a dispatcher element with instance_number=15 is:

P4 port=50000+100*15+4=51504

Administrative Services for AS Java Ports

There are additional administrative services used by the AS Java. The corresponding ports are shown in the table below.

Administrative Service Ports

Service	Port / Service	Default	Range
Start service HTTP	5NN13 sapctrlNN	50013	50013-59913
Start service HTTPS	5NN14 sapctrlsNN	50014	50014-59914
SDM	5NN17 5NN18 5NN19	50017 50017 50019	Not applicable

See also:

TCP/IP Ports Used by SAP Applications

This document provides a complete list of the ports used in conjunction with the AS Java, for example, the ports used by SAPinst during installation or when using the SAP Web Dispatcher. You can find this document on the SAP Developer Network at www.sdn.sap.com/irj/sdn/security under Infrastructure Security  →  Network and Communications Security.