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The cluster moves in and out of a converged state. Solved Windows Unicast NLB virtual machine unable to ping each other ? Cause: The network traffic is coming from a limited number of IP addresses, possibly due to the setting on a proxy server. Enter the host's fully qualified domain name. weblink

Be aware that this may expose your system to additional security risk. IANA (Internet Assigned Numbers Authority)has a mapping process for assigning Multicast MAC addresses with the first 24 bits (+ 1 zero bit) "01-00-5E." Full range of multicast MAC addresses as follows: Solution: Make sure that your router has proxy ARP support turned on. If NLB is running in Unicast Mode, everything works fine. https://blogs.technet.microsoft.com/networking/2009/01/15/unable-to-connect-to-windows-server-2008-nlb-virtual-ip-address-from-hosts-in-different-subnets-when-nlb-is-in-multicast-mode/

Nlb Host Unreachable

Check arp entries on all the servers. There is no response when using ping to access a host's dedicated IP addresses from another cluster host. Cause: You configured the cluster's IP address before NLB was bound to the network adapter. Tiger LiTiger Li TechNet Community Support

Marked as answer by Tiger LiMicrosoft employee Thursday, June 21, 2012 1:49 AM Wednesday, June 20, 2012 5:26 AM Reply | Quote All replies

These posts will be deleted without mercy. Note You can also view the Windows event logs to check for errors and warnings. Please type your message and try again. 6 Replies Latest reply: May 13, 2015 2:52 AM by MKguy Microsoft Server 2012 NLB (multicast) times out after several minutes motenoob12 May 12, Nlb Cluster Ip Not Reachable Thanks. 0 Comment Question by:Senior IT System Engineer Facebook Twitter LinkedIn Email https://www.experts-exchange.com/questions/28372019/Windows-Unicast-NLB-virtual-machine-unable-to-ping-each-other.htmlcopy LVL 19 Active today Best Solution bycompdigit44 Are the vSwitch NIC teaming policies the same?

You can also change the port number by modifying the corresponding NLB parameter. Otherwise, the switch can behave erratically when the same unicast network is used on multiple switch ports. Cause: One host is unable to send or receive heartbeats. Greetings, Robert Smit [MVP] http://robertsmit.wordpress.com/ “Please click "Vote As Helpful" if it is helpful for you and Proposed As Answer” Marked as answer by Tiger LiMicrosoft employee Thursday, June 21, 2012

Mixing Windows Server 2003 and Windows Server 2008 in the same cluster is not supported for long periods of time. Cluster Operation Mode You can also turn off NLB multicast support and use a unicast network address without a hub. The topics describe the likely reasons for each issue and one or more suggested remedies. This should be posted in the TechNet NLB Step-by-Step guide as a notation. 8 years ago Reply Gustavo Aguilar I would add that can be necesary to add the static

Nlb Unicast Vs Multicast

This explains why the router drops the packet. https://www.experts-exchange.com/questions/25097213/Network-Load-Balancing-Cannot-Ping-Cluster-IP-from-Different-Subnet.html Try Free For 30 Days Join & Write a Comment Already a member? Nlb Host Unreachable Join and Comment By clicking you are agreeing to Experts Exchange's Terms of Use. Cannot Ping Cluster Ip Address What ports do I have to unblock for NLB?

You are unable to create a Network Load Balancing cluster in a 64-bit version environment. http://ecoflashapps.com/cannot-ping/vmware-ping-destination-host-unreachable.html Clear the ARP cache on the NLB node as in step 1. You should be able to add a static ARP entry to the router to circumvent the issue. Re: Microsoft Server 2012 NLB (multicast) times out after several minutes MKguy May 13, 2015 2:52 AM (in response to motenoob12) The McastIPAddress parameter should only be populated when you use Kb960916

Cause: A different number of port rules or incompatible port rules on different cluster hosts were entered. Join the community of 500,000 technology professionals and ask your questions. In Windows Server 2003, assume that we have the Virtual IP address and Dedicated Primary IP on the interface. check over here Join and Comment By clicking you are agreeing to Experts Exchange's Terms of Use.

Microsoft Customer Support Microsoft Community Forums TechCenter   Sign in United States (English) Brasil (Português)Česká republika (Čeština)Deutschland (Deutsch)España (Español)France (Français)Indonesia (Bahasa)Italia (Italiano)România (Română)Türkiye (Türkçe)Россия (Русский)ישראל (עברית)المملكة العربية السعودية (العربية)ไทย (ไทย)대한민국 (한국어)中华人民共和国 (中文)台灣 Windows Nlb Across Subnets Cause: You might not be running the appropriate NLB version for your environment. Solution: Open the Network Load Balancing Properties dialog box on each cluster host and verify that all hosts have identical port rules.

Solution: Clear the switch's port to MAC address mapping.

All rights reserved. TRUE broadcast destination MAC address equal to FFFF.FFFF.FFFF IPv4 multicast MAC addresses from 0100.5E00.0000 to 0100.5EFE.FFFF IPv6 multicast MAC addresses from 3333.0000.0000 to 3333.FFFF.FFFF BPDU multicast address equal to 0100.0CCC.CCCD AppleTalk Privacy Policy Site Map Support Terms of Use My VMware | VMware.comSearch ActivityBrowseAll ContentBlog PostsDiscussionsDocumentsPollsBookmarksPopular tagsCommunitiesGroupsPeopleLog inRegisterHomeVMTN Forums Mobile AppsBlogsTwitterFacebookGoogle+LinkedInYouTubeGroupsPodcasts vSphere NSXVirtual SAN vCenterFusionWorkstationvExpertVMware {code} CloudCredSubmit a Link Home Hotfix Kb960916 Thursday, June 14, 2012 9:19 PM Reply | Quote Answers 0 Sign in to vote Hi, You can not use the same NLB cluster name.

Also, check the server route table using "route print". So even though it is NLB configured as multicast Microsoft have not stuck with the IANA standard. Subscribe to our monthly newsletter for tech news and trends Membership How it Works Gigs Live Careers Plans and Pricing For Business Become an Expert Resource Center About Us Who We this content If you are using a single network adapter for the dedicated and cluster IP addresses, consider the following causes: Cause: If you are using multicast support, you might find that your

When we created the cluster with that one server in the other subnet, we were not able to ping the cluster ip from the server in the other subnet. permalinkembedsavegive goldaboutblogaboutsource codeadvertisejobshelpsite rulesFAQwikireddiquettetransparencycontact usapps & toolsReddit for iPhoneReddit for Androidmobile websitebuttons<3reddit goldredditgiftsUse of this site constitutes acceptance of our User Agreement and Privacy Policy (updated). © 2016 reddit inc. Solution: Be sure that these ports have not been blocked incorrectly by a router or firewall. You should be able to add a static ARP entry to the router to circumvent the issue.

Did the page load quickly? If you want to hate your life more, we have an ESX cluster that has two VMs that are part of an NLB group, so we have to set the MAC Cause: Internet control message protocol (ICMP) to the cluster is blocked by a router or firewall. Microsoft Customer Support Microsoft Community Forums United States (English) Sign in Home Windows Server 2012 R2 Windows Server 2008 R2 Library Forums We’re sorry.

First Name Please enter a first name Last Name Please enter a last name Email We will never share this with anyone. NLB cannot form a cluster when the 32-bit version of NLB is used on a 64-bit version computer. Verify that you can usepingto access the dedicated IP addresses for the cluster hosts from a computer outside the router. First Name Please enter a first name Last Name Please enter a last name Email We will never share this with anyone.

Should be able to get rid of half of those machines in the near future, and the other half in a year or so and can finally be done with this There is no response when you use ping to access a host's dedicated IP addresses from another cluster host. Posted on 2014-02-23 VMware Windows Server 2003 Networking 8 5 solutions 2,177 Views Last Modified: 2014-03-30 Hi People, I am managing a new environment where there are two nodes Unicast NLB Tiger LiTiger Li TechNet Community Support

Marked as answer by Tiger LiMicrosoft employee Thursday, June 21, 2012 1:49 AM Wednesday, June 20, 2012 5:26 AM Reply | Quote 0 Sign

Issue: NLB can't ping cluster IP from outside cluster. [Answered]RSS 3 replies Last post Mar 04, 2008 08:14 AM by hydn ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Recommended & Related Sub-Reddits: /r/NetworkingJobs /r/sysadmin /r/ITCareerQuestions /r/CSCareerQuestions /r/ccent /r/ccna /r/juniper /r/jncia /r/ccda /r/ccnp /r/jncis /r/ccdp /r/jncip /r/ccie /r/ccde /r/jncie /r/HomeNetworking /r/TechSupport Related IRC Channels #cisco #juniper #networking #ipv6 Rule #1: