Brian & Michael Thanks for your tips. Configuring the Cisco switches and VMware vSwitches as described in the links made the job. NLB is now working.
Patrick ________________________________ From: Brian Desmond [[email protected]] Sent: Tuesday, July 12, 2011 19:00 To: NT System Admin Issues Subject: RE: Exchange 2010 DAG Cluster with HT/CAS on NLB You have to burn the NLB MAC/ARP entry into the switches with Cisco. Here is the doc - http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a0080a07203.shtml. There’s also a checkbox on the properties of the vSwitch in VMWare you have to check. I don’t recall the name offhand, though. Thanks, Brian Desmond [email protected]<mailto:[email protected]> c – 312.731.3132 From: Straub, Patrick [mailto:[email protected]] Sent: Tuesday, July 12, 2011 10:22 AM To: NT System Admin Issues Subject: RE: Exchange 2010 DAG Cluster with HT/CAS on NLB Hi Michael I got the details from my collegue: Specs: • Exchange Server 2010 • All Servers installed on VMware ESX 4.1 • 2x Mailbox Server Role in a DAG Cluster • 2x CAS/HT Server Role in an NLB Cluster • 1 of each are on an ESX Server in Data Center 1 and the other ones in Data Center 2 • The Data Centers are connected with a Layer 2 Fibre Optic Gigabit Link, Distance approx. 300m • Switches: a Cisco 4500 in DC1 and a Cisco 3750 in DC2, connected with an Etherchannel and HSRP • Clients are on a different subnet, the Cisco 4500 and 3750 are Layer 3 Switches Imagine left DC1 and right DC2: Exchange NLB Setup: http://howtoexchange.wordpress.com/2009/12/16/configuring-client-access-array-for-exchange-2010-walkthrough/ Cisco Info: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006525 How do we need to configure the Cisco switches for NLB to work right? And It doesn’t converge at all. I got some hints why in the meantime, working on it, don’t know yet if that’s the solution. Thank you for your help. Patrick ________________________________ From: Michael B. Smith [[email protected]] Sent: Tuesday, July 12, 2011 00:02 To: NT System Admin Issues Subject: RE: Exchange 2010 DAG Cluster with HT/CAS on NLB And what does the OP mean, specifically, by “having some problems”? Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Brian Desmond [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Monday, July 11, 2011 5:46 PM To: NT System Admin Issues Subject: RE: Exchange 2010 DAG Cluster with HT/CAS on NLB Well NLB isn’t very smart. I would expect it to take a bit of time for things to converge. Does it ever converge (e.g. if you turn off one server, does it eventually start working)? Thanks, Brian Desmond [email protected]<mailto:[email protected]> c – 312.731.3132 From: Straub, Patrick [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Monday, July 11, 2011 4:24 PM To: NT System Admin Issues Cc: [email protected]<mailto:[email protected]> Subject: FW: Exchange 2010 DAG Cluster with HT/CAS on NLB Hi everybody We’re currently implementing a setup of 4 Exchange 2010 Servers with 2 MBX and 2 HT/CAS Servers. Unfortunately, we’re having some problems getting the NLB to work right. Whenever one server of the CAS Array reboots, the other doesn’t take over it’s functionality. Has anyone configured such an installation so far? What was your experience and how did you get it to work? [cid:[email protected]] Thank you for your help. Patrick ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
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