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Configuring Multicast Address and Port for BPM Engine in a Clustered Environment (Doc ID 816504.1)

Last updated on JULY 10, 2020

Applies to:

Oracle Business Process Management Suite - Version 6.0.4 to 6.0.5
Information in this document applies to any platform.

Goal

In a multiple environments scenario, all BPM engines have the same multicast address and port configured.

This is likely to happen, because when the cluster option for an engine is enabled from Process Administrator, the default address and port will be set in the engine properties.

Thus, a possible scenario for customers is that all the environments, like UAT, Staging and Production, use the same address, for example:

UDP(mcast_addr=xxx.x.x.x;mcast_port=<tuvwxy>;ip_ttl=32;mcast_send_buf_size=150000;mcast_recv_buf_size=8
0000):PING(timeout=2000;num_initial_members=3):MERGE2(min_interval=5000;max_interval=10000):FD_SOCK:
VERIFY_SUSPECT(timeout=1500):pbcast.NAKACK(gc_lag=50;retransmit_timeout=300,600,1200,2400,4800):UNIC
AST(timeout=5000):pbcast.STABLE(desired_avg_gossip=20000):FRAG(frag_size=4096;down_thread=false;up_t
hread=false):pbcast.GMS(join_timeout=5000;join_retry_timeout=2000;shun=false;print_local_addr=true):
pbcast.STATE_TRANSFER

Also notice that the same port number is used for all 3 channels :"Distributed Participant Cache Multicast Address", "Distributed Role Cache Multicast Address", and "Proto Stack Configuration".

Questions:
1. Is it wrong to use the same multicast IP address and port in all the environments? In all the environments the corresponding Weblogic Server multicast address is same but the port is different for each environment.

2. By default all 3 channels use the same multicast address and port. Is it necessary to configure different ports for these channels?

Solution

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In this Document
Goal
Solution
References

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