Skip to Main Content
IBM Power Ideas Portal


This portal is to open public enhancement requests against IBM Power Systems products, including IBM i. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


Shape the future of IBM!

We invite you to shape the future of IBM, including product roadmaps, by submitting ideas that matter to you the most. Here's how it works:

Search existing ideas

Start by searching and reviewing ideas and requests to enhance a product or service. Take a look at ideas others have posted, and add a comment, vote, or subscribe to updates on them if they matter to you. If you can't find what you are looking for,

Post your ideas
  1. Post an idea.

  2. Get feedback from the IBM team and other customers to refine your idea.

  3. Follow the idea through the IBM Ideas process.


Specific links you will want to bookmark for future use

Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

IBM Unified Ideas Portal (https://ideas.ibm.com) - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM.

ideasibm@us.ibm.com - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.

Status Not under consideration
Workspace PowerHA for AIX
Created by Guest
Created on Mar 1, 2017

HA 7.1 MultiCast Functionality

HA 7.1 multi cast functionality is not working correctly... Request to send to the switch on first attempt to sync the cluster... After a reboot of the nodes the cluster cannot sync because a new request is not send to the cluster... The cluster expects the switch to remember which is not possible as the switch have a timeout value... Need PowerHA to send request to the switch so the switch could be aware of Multi Cast...
This is not an option on the switch as other lpars are on the same vlan...

1) IGMP snooping: ON

2) IGMP querier: ON

3) PIM: OFF

Idea priority High
  • Guest
    Reply
    |
    Sep 23, 2020

    Only the very early version (2010-2011) of CAA used multicast, now all the deployments of CAA uses socket (TCP/IP) for communication by default. This mode of communication is called UNICAST. Hence, everything should work seamlessly across multiple subnets, as the routing is handled by TCP/IP stack.

    Only in very rare occasions, when there is no incoming packets on an interface, CAA would issue a multicast ping to generate some incoming packet to check the health of the adapter. This should also work by default. Customer can easily test this on any of their nodes even without configuring PowerHA, by simply running the command,

    ping -I 224.0.0.1

    This multicast group is turned on on all AIX machines and these don't need to go across network to a remote CAA node. This is just an ARP message, All the neighboring AIX machines will respond to this thereby generating incoming packets. In short, no special handling is needed if customer is using UNICAST mode