Sun Cluster does not support this feature. -----Original Message----- From: veritas-ha-boun...@mailman.eng.auburn.edu [mailto:veritas-ha-boun...@mailman.eng.auburn.edu] On Behalf Of Sandeep Agarwal (MTV) Sent: Sunday, May 03, 2009 10:07 AM To: Jim Senicka; Imri Zvik Cc: veritas-ha@mailman.eng.auburn.edu Subject: Re: [Veritas-ha] LLT heartbeat redundancy
>From 5.0MP3 onwards we do support cross-links. In your example if you had a cable connecting sw1 and sw2 then the failure that you described would be handled and LLT would still have 1 valid link between node 1 and node 4. -----Original Message----- From: veritas-ha-boun...@mailman.eng.auburn.edu [mailto:veritas-ha-boun...@mailman.eng.auburn.edu] On Behalf Of Jim Senicka Sent: Sunday, May 03, 2009 9:23 AM To: Imri Zvik Cc: veritas-ha@mailman.eng.auburn.edu Subject: Re: [Veritas-ha] LLT heartbeat redundancy LLT is designed to use "jeopardy" to detect the difference between single link fail and dual link fail in most situations. Having a single mesh may remove this capability. Let me check on this with engineering and see if we have any more up to date recommendations -----Original Message----- From: veritas-ha-boun...@mailman.eng.auburn.edu [mailto:veritas-ha-boun...@mailman.eng.auburn.edu] On Behalf Of Imri Zvik Sent: Sunday, May 03, 2009 12:18 PM To: Jim Senicka Cc: veritas-ha@mailman.eng.auburn.edu Subject: Re: [Veritas-ha] LLT heartbeat redundancy On Sunday 03 May 2009 19:03:16 Jim Senicka wrote: > This is not a limitation, as you had two independent failures. Bonding > would remove the ability to discriminate between a link and a node > failure. I didn't understand this one - With bonding I can maintain full mesh topology - No matter which one of the links fails, if a node still has at least one active link, LLT will still be able to see all the other nodes. This achieves greater HA than without the bonding. > My feeling is in the scenario you describe, VCS is operating properly, > and it is not a limitation. Of course it is operating properly - that's how it was designed to work :) I'm just saying that the cluster could be more redundant if it wasn't designed that way :) > If you have issues with port or cable failures, add a low pri connection > on a third network. _______________________________________________ Veritas-ha maillist - Veritas-ha@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-ha _______________________________________________ Veritas-ha maillist - Veritas-ha@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-ha _______________________________________________ Veritas-ha maillist - Veritas-ha@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-ha _______________________________________________ Veritas-ha maillist - Veritas-ha@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-ha