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Cisco UCS through Fiber Interconnects running VMWare with NLB can't ping from any other host

Posted on 2013-01-31
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Last Modified: 2013-02-15
We are setting up NLB on VMWare 5.0 Windows 2008 R2 machines we've kicked up and built a cluster.  We can ping the 2 NIC IPs but not the cluster IP except from any VM on the same host.  Other hosts do not work.  

The Cisco goes through Fiber Interconnects so I'm guessing it's not allowing it to pass through due to some MAC issue, but am at a loss.
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Question by:bergquistcompany
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11 Comments
 
LVL 120
ID: 38841271
multicast or unicast mode?
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by:bergquistcompany
ID: 38841279
multicast

I can ping from the same host but not from any other.
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Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 38841313
okay one of the biggest issues with multicast is the registration of the IP address against multicast mac address on ALL physical switches.

often called static arp entries.

see these kb

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006558

http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1006525
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Author Comment

by:bergquistcompany
ID: 38841351
Ok but if I have 5 Cisco Blades in one Cisco UCS Chassis and they communicate through a fiber interconnect they aren't going out to a physical switch so where do I need to make this in a vswitch?  Also any documentation on the commands.  I can do this on 2 stand alone machines without issue, just struggling through the UCS.
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LVL 120
ID: 38841370
it needs to be made on the physical switch, nothing todo with vSwitch.

the commands and documentation are in the VMware links in my post.
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Author Comment

by:bergquistcompany
ID: 38841403
Here is my issue though the Cisco UCS goes through Fiber Interconnects that connect to the Ethernet uplinks on my cisco switch Eth 1/2.  Can I do these commands against the uplink ports?
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LVL 120
ID: 38841422
all ports need to have static arps defined.
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Author Comment

by:bergquistcompany
ID: 38841459
ok so I have followed link 1.
I am in link 2 and have done step 3.  Neither of which seem to apply to a port
I'm a little uncertain on #4

Would I do mac-address-table static 02-bf-0a-0a-03-95 vlan 1 (in the example it shows ge1/1 ge1/2 ge1/15 ge1/16).  Looking at my CH-MC FI for fiber interconnects would I use Eth 1/2 Eth 1/1 Eth 1/2 Eth 1/1 or is there a way to say all?
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LVL 120
ID: 38841489
when we have had issues we have created static arps on ALL ports uplinks that you would expect to use this cluster IP address on in your network, yes every physical switch.

yes you would assign it to all if those carry the multicast traffic, there is no All value
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Author Comment

by:bergquistcompany
ID: 38841525
ok so I have followed link 1.
I am in link 2 and have done step 3.  Neither of which seem to apply to a port.

I'm a little uncertain on #4.  Would I do:

 mac-address-table static 02-bf-0a-0a-03-95 vlan 1 (in the example it shows ge1/1 ge1/2 ge1/15 ge1/16).  Looking at my CH-MC FI for fiber interconnects would I use Eth 1/2 Eth 1/1 Eth 1/2 Eth 1/1 or is there a way to say all?
CDP.PNG
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LVL 120
ID: 38841548
yes, you would use ports ethernet nics from ESXi servers are connected to.
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