Below is the configuration to be done on the switch.Cisco Switch ConfigurationTo resolve the problem, create a static ARP entry for the Virtual IP Address to the NLB MAC address. NetScaler Citrix Advertise Here 780 members asked questions and received personalized solutions in the past 7 days. All rights reserved.REDDIT and the ALIEN Logo are registered trademarks of reddit inc.Advertise - technologyπRendered by PID 5208 on app-565 at 2016-11-08 11:09:16.786136+00:00 running 88212cf country code: IE. You can also chec if the members send IGMP membership reports for the NLB IP even though it should be disabled. have a peek here
It is on the same subnet as all the other servers. Edit: looking back in time and reading http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/107995-configure-nlb-00.html, you can do it, but... NLBResults.gif 123.4 K Like Show 0 Likes (0) Actions 4. However, out side of those two server no other PC can ping the cluster IP.
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. It seems this router that connects both subnets didn’t been properly configured to accept proxy ARP responses. Now the porblem is that the user (diff Vlan) is able to ping the physical ip of the server but not the virtual ip.Can some one please provide the solution to Quick explanation of the issue is, there is a windows 2003 server that serves as a router for a particular network, I want to decommissioned that server and add it to
You need to talk to your network admin about routing to the other subnet, and check your firewall most issues are about not configuring the FW. 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: Show 6 replies 1. Kb960916 Any suggestions 7 years ago Reply Sebash Fixed with: http://support.microsoft.com/kb/960916 7 years ago Reply Tyler Good writeup.
Was my first initiation to Microsoft NLB and a pain to try to troubleshoot in the middle of a migration. Nlb Host Unreachable If I specifiy my virtual NLB IP (the internal network is load balanced) I cannot get on the internet. I still prefer the different VLAN approach (TBH, I'm not sure that was the way I used to configure those, it's been a while). Articles Authors Blogs Books Events FAQs Free Tools Hardware Links Message Boards Newsletter Software About Us : : Product Submission Form : Advertising Information ISAserver.org is in no way affiliated with
Server & Tools Blogs > Server & Management Blogs > Networking Blog Sign in Menu Skip to content All About Windows Server Windows Server Nano Server Windows Server Essentials Ask the Windows Nlb Across Subnets Whenever you try to ping the Virtual IP address from a client, the Windows Server 2003 NLB node sends out an ARP request to the Default Gateway IP address. You should be able to add a static ARP entry to the router to circumvent the issue. These topics pollute our industry and devalue the hard work of others.
It as if the switch does not know about these IP addresses, but it knew about them when RRAS was doing the routing. WServerNews.com The largest Windows Server focused newsletter worldwide. Cannot Ping Nlb Cluster Ip From Different Subnet i am so confused please help. 12 commentsshareall 12 commentssorted by: besttopnewcontroversialoldrandomq&alive (beta)[–]dcoulson 5 points6 points7 points 1 year ago(0 children)Does the system you're pinging from, or your router, have an ARP entry for Nlb Unicast Vs Multicast Rowell Dionicio Hi maione,I found the VIP from the server using Windows NLB.
We don't do your homework for you. navigate here On that server I disabled the adapters, added the gateway to the core, and done, i am now able to ping the interfaces on all of my servers except for the Symptoms: You cannot connect to the NLB Virtual IP Address when NLB is running in Multicast Mode on Windows Server 2008 from machines on the other subnets. Solution: Allow ICMP traffic through the router or firewall. Cannot Ping Cluster Ip Address
mac-address-table static 0100.5301.0200 vlan 50 interface mod/port mod/port disable-snooping 0 Featured Post Better Security Awareness With Threat Intelligence Promoted by Recorded Future See how one of the leading financial services organizations It is fantastic. Suggested Solutions Title # Comments Views Activity Wifi(LAN) GW being picked up 2 24 21d Sql server Memory Issue 5 52 84d Cisco VPN & Windows File Server 2 54 68d Check This Out You can also set a static ARP entry to keep proxy ARP support disabled in the router.
Events Experts Bureau Events Community Corner Awards & Recognition Behind the Scenes Feedback Forum Cisco Certifications Cisco Press Café Cisco On Demand Support & Downloads Login | Register Search form Search Nlb Cluster Ip Not Reachable This setup will prevent the external physical switches from interfering.- Rebuild the NLB from scratch with the same config as the 2008 one (multicast, no IGMP, same affinity)- From the test What ports do I have to unblock for NLB?
Clear the ARP cache on the NLB node and try to ping the NLB; the ping will fail. In my case I am using a Cisco Catalyst 4500-X in VSS mode. Steps to reproduce the issue In the following scenario, the client is on subnet 172.32.x.x/24 and the Windows Server 2008 NLB node is on subnet 172.33.x.x/24:Note: A static ARP Nlb Multicast Try to ping the NLB VIP; the ping request will fail.
IP address will not mean anything to you. Any post that fails to display a minimal level of effort prior to asking for help is at risk of being Locked or Deleted. Each VM has a single NIC.We are finding that after a few short minutes of inactivity, the NLB's IP address will timeout until the NIC on either VM is disabled/enabled, and this contact form First Name Please enter a first name Last Name Please enter a last name Email We will never share this with anyone.
Also, check the server route table using "route print". Then create a static MAC address entry to the VLAN and interfaces used by the cluster.In my case, my virtual IP address is 192.168.10.10 with MAC address of 03bf.0a65.05fa. Blogspam / Traffic Redirection. I added a static arp entry to the systems on the same subnet/ESX host (Server 2008) and was still unable to ping the 2012 cluster.Our 2008 and 2012 clusters are both
Here's a very simple summary I've written which might help. The Ip of second node on the NLB stops pinging for 20 min and comes up again (but this will ping from all the other place) any idea why this is 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. permalinkembedsaveparentgive gold[–]oottppxx 0 points1 point2 points 1 year ago(0 children)My preference is to have left all of this behind on a past job ;-) permalinkembedsaveparentgive gold[–]banditoitaliano 0 points1 point2 points 1 year ago(2 children)You can
in the 2008 part of this post, you say: -- SendersMacAddress: 03-bf-ac-20-10-64 <- Multicast MAC address. -- To me multicast MAC are in the range: 0100.5E00.0000 to 0100.5EFE.FFFF Why do