HP BL490C G6 / NC553M / Virtual Connect Flex-10 / frames not subproject

Hello world

So, we are adding some additional 5.5 ESXi hosts in our cluster.  Host hardware configuration looks like this:

* BL490C G6

* Dual Proc

* 72-144 GB of RAM

* Integrated NC531i NIC

* Other NC553M NIC

Inside the enclosure, we have four Flex-10 modules to provide connectivity to the NETWORK adapter as well as the NIC NC553M to the location of mezz 1.  The reason for the card NETWORK NC553M is it is supported of the extended 9K frames.  The NC531i has only 4K support frame.  It's the exact configuration for a G6 blade in the HP cookbook on page 10 of the http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c02533991-10.pdf

On the side of Virtual Connect I have four modules stacked with cables SFP - DAC 10 m 1 GB to provide connectivity and then we have a shared connection fixed module 1 and module 2 for the power switch in this cage to 10 GB so.  On the kernel to miss, we made sure to allow frames jumbo on iSCSI VLANS.

I made sure my vSwitch and adapter MTU are all set to 9000.

vmware-iscsi-01.png

vmware-iscsi-02.png

vmware-iscsi-03.png

The problem is that I can not vmkping with everything above a size of the iSCSI standard package VLAN without having too much attention when I say do not fragment.  As you can see from downstairs than a normal ping works fine, but if I try something like a 2K ping fails.

vmware-iscsi-04.png

The switch that he speaks is HP Procurve 5400ZL R2.  I configured a port of 1 GB on the untagged for the iSCSI switch VLAN and I had no problem by assigning an IP address of my computer windows laptop, allowing 9 K jumbo frames and the realization of pings jumbo frame network SAN.  So, that tells me that the switch on the side of SAN seems good.

So what in the world could cause this problem?  Some things roll around in my head are:

  • Configure another blade of VMWare inside the chassis configured the same way as this one.  See if I can vmkping of frames to the other blades VMWare iSCSI NIC if it works then it would tell me that jumbo frames work inside VMWare and inside the virtual environment itself connect C7000.  They swear in all Virtual Connect documentation that frames "turned on by default".  I would like to find a way to confirm that on the CLI or something.
  • Configure a dedicated connection for iSCSI traffic on the Flex-10 modules to iSCSI VLANS.  Do not use a shared set of uplink.  This shouldn't be a problem though.  This is the scenario 2 of the HP Virtual Connect iSCSI Cookbook
  • Configure another slide with the same material, but something as CentOS load on it and see if he can make this map jumbo frames and the network.  If it can and can not VMWare then he would tell me something wrong with my configuration of VMWare

I would really appreciate anyone who helps to solve this problem of configuration.  We really need get this cluster running inside this frame so that we can continue with a migration project.

Sincerely,

Jonathan

I have seen that sometimes a host needs a real reboot after enabling jumbo frames, did you do that?

'Too long message' error comes from the IP stack own hosts and not a peripheral network between the two, your package is never leaving the host.

Make sure to specify the interface vmkernel dating the -I spend when you run vmkping:

1. you can vmkping the host on his own localhost and vmkernel interface IP? For example:

# vmkping d s 8972 127.0.0.1

# vmkping - I vmk1 d s 2000 [Destination IP]

2. try tests with esxcli network, diag ping utility for example:

# esxcli network of diag ping - df - vmk1 - the ipv4 interface - size 2000 - host [IP of Destination]

3. your iSCSI network is on a completely different subnet of all other interfaces vmkernel (e.g. Management), and it is a flat area not routed layer 2, right?

4. always make sure that your card drivers NETWORK and firmware are up to date.

5. the output of the following commands could be useful as well, if you replace information such as IPs please do so in a consistent way to keep relationships intact:

List of the nic # esxcli network

# esxcli network ip interface list

get # esxcli ip interface ipv4 network

list of ipv4 route # esxcli ip network

vmware # esxcli network vswitch dvs list

list standard # esxcli vswitch network

List of the nic # esxcli network | awk (' print $1' "). grep vmnic | while reading nic; make esxcli network nic get - n '$nic '; fact

# vmware - v

Tags: VMware

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