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IDS Forum

RE: Determining cause of DR ping timeout

Posted By: Jonathan Smaby
Date: Tuesday, 28 August 2012, at 2:05 p.m.

In Response To: Re: Determining cause of DR ping timeout (Keith Simmons)

Thanks Keith,

My two systems are connected via LAN at 1Gbps on the same pair of stacked Cisco 3750X switches. No maxing-out of network links. The replication happens over dedicated private vLan links to avoid contention for bandwidth. I also have very small databases, most are less than 4 Gb. I've also turned off logging for Temp Tables (TEMPTAB_NOLOG 1) in ONCONFIG file. The one and only thing I can think of is I'm using 802.3ad LCAP network load-balancing and high-availability with 2 network interfaces acting as a Linux Bond interface "Bond0". The Cisco 3750X switches and the Novell SuSE Linux OS are correctly configured for 802.3ad port channel.

Are there any tools IBM has to monitor HDR and DR ping? Is there verbosity settings to increase detail and information in the online log?

Thanks for any advice.

Jonathan B. Smaby
Pomona College
--
"If you are not willing to risk the unusual, you will have to settle for the ordinary." - Jim Rohn

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of Keith Simmons
Sent: Tuesday, August 28, 2012 10:31 AM
To: ids@iiug.org
Subject: Re: Determining cause of DR ping timeout [28182]

Jonathan

No help I'm afraid, just to observe I'm getting this issue intermittently on IDS9.4 and am disappointed to see it on a more modern engine :-(( Are you running HDR over a LAN or WAN connection ?? Do you get any network hiccups (however brief) or maxing of any part of the link between the servers ?
See my recently resurrected thread for detail needed when you raise your PMR !!

Keith

On 28 August 2012 17:54, Jonathan Smaby <Jonathan.Smaby@pomona.edu> wrote:
> Good morning IDS community.
>
> It seems to happen intermittently, and there doesn't seem to be any
> physical
/
> logical network switch causes, for DR ping timeout with an HDR Primary
> and
HDR
> Read-Only Secondary IDS 11.50.FC6 servers. Both are Dell R610
> x86-64bit systems with SuSE Linux 11.00 systems. I have a separate NIC
> interface and vLan for replication traffic for Logical Logs from the
> Primary to the Secondary systems. The only clue I get is out of the ONLINE LOG:
>
> 08/27/12 04:31:52 Logical Log 34090 Complete, timestamp: 0x2ae64284.
> 08/27/12 04:36:09 Logical Log 34091 Complete, timestamp: 0x2afb8012.
> 08/27/12 04:40:46 DR: ping timeout
> 08/27/12 04:40:57 DR: Received connection request from remote server
> when DR is not Off
>
> [Local type: Secondary, Current state: FAILED]
>
> [Remote type: Primary]
>
> What tools or techniques can you recommend to trouble-shoot the DR
> ping timeout problem?
>
> Thank-you for any suggestions or recommendations.
>
> Jonathan B. Smaby
> Pomona College
> --
> "If you are not willing to risk the unusual, you will have to settle
> for the ordinary." - Jim Rohn
>
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