Re: [Veritas-ha] LLT heartbeat redundancy

2009-05-13 Thread Andreas . Lundgren
Since I seem to be about the only windows user of vcs in the world ;-) I wonder a bit about this - I was under the impression this was not recommended practice in a windows VCS environment, but it would be supported according to these mails? /a Sent from a p990i Reply Header _

Re: [Veritas-ha] LLT heartbeat redundancy

2009-05-13 Thread Sandeep Agarwal (MTV)
LLT does support Layer 2 link aggregation and can work over trunks/bonds/aggregated links as long as a single device is presented to it: Linux - Bonding Solaris - Sun Trunking (now link aggregation/dladm in Solaris 10) HPUX - Auto Port Aggregation AIX - Etherchannel IPMP is at Layer 3 and Bondin

[Veritas-ha] wac question and suggestion

2009-05-13 Thread Pavel A Tsvetkov
Hello all! Only WAC now ensures communication between clusters. But it is not always good. If WAC is broken it is still possible to use heartbeats (through SRDF ping or steward) but there is no other ways of starting service groups on remote cluster. I don't mean Auto failover option betwee

Re: [Veritas-ha] LLT heartbeat redundancy

2009-05-13 Thread Imri Zvik
On Wednesday 13 May 2009 06:04:38 John Cronin wrote: > Getting slightly off topic, but still somewhat relevant. > > Linux has many flavors of Ethernet bonding.  To be sure, link aggregation > resulting in increased bandwidth is generally supported on a single switch. > However, Linux does have an a

Re: [Veritas-ha] LLT heartbeat redundancy

2009-05-13 Thread Imri Zvik
On Thursday 07 May 2009 14:11:02 John Cronin wrote: > On thing to consider - don't you want to know when you lose a heartbeat > link?  I know the lost link will be noted in /var/log/messages or wherever > your syslog configuration indicates, but I would want it in my VCS logs > somewhere too. Of c

Re: [Veritas-ha] LLT heartbeat redundancy

2009-05-13 Thread Imri Zvik
On Wednesday 13 May 2009 05:27:00 Hudes, Dana wrote: > I don't care what tricks Linux plays or what they call it. From a > network perspective, true bonding requires connection to the same > switch/router and is done at the link layer. You don't have 2 IP > interfaces, you have one. The bits go out