Re: HMC to Rack communcations

[Roberto José Etcheverry Romero <yggdrasil.raiker@xxxxxxxxx>]

Rob
That you can ping does NOT mean that networking is working as it should.
I spent half a day trying to find out why a brand new vHMC wouldn't work
until I downloaded the VM into my notebook and hooked it directly to the
server. The problem? Networking guys had an ACL restricting traffic between
IPs in the same VLAN, not PING mind you but other traffic...
Maybe your networking guys are doing something like that? just one badly
configured ACL in all the points between the HMC and the machine and down
goes the link.

Roberto

On Tue, Aug 1, 2017 at 12:01 PM, Rob Berendt <rob@xxxxxxxxx> wrote:

> Hopefully,
> since I can ping it the cables are in the right slot.
>
> Sent from IBM Verse
>
>
>    Jim Oberholtzer --- Re: HMC to Rack communcations ---
>     From:"Jim Oberholtzer" <midrangel@xxxxxxxxxxxxxxxxx>To:"Midrange
> Systems Technical Discussion" <midrange-l@xxxxxxxxxxxx>Date:Tue, Aug 1,
> 2017 10:57 AMSubject:Re: HMC to Rack communcations
>
>     Firewall yes, more likely a routing problem with the network.Rob:  Do
> make sure the cables are plugged in where you expect them to be.  More than
> once I've had customers tell me they plugged into #1 Ethernet (ETH0 on the
> HMC) only to find out they really put it into #3 (Eth2) since the layout of
> the ports on the back of the newer HMCs are not always intuitive, and of
> course they don't read the label.--Jim OberholtzerAgile Technology
> ArchitectsOn 8/1/2017 8:50 AM, Tsvetan Marinov wrote:> Hi,>> It looks like
> a firewall issue, can you check the following requirements in> the
> document:> http://www-01.ibm.com/support/docview.wss?uid=nas8N1019111>>
> You can try to remove the server from connections and try to add it again,>
> sometimes it takes a while in order for the HMC to discover the server. Be>
> sure that you know the HMC access password for the server.>> The following
> ports should be opened:> Nets (HMC-FSP SSL communications) 30000,30001
> (private/intranet) Managed> Server HMC connection.>> На вт, 1.08.2017 г. в
> 14:42 Rob Berendt <rob@xxxxxxxxx> написа:>>> I have an HMC in one city
> with one Power 8.>> I have another HMC in another city with two other Power
> 8's.>>>> Until recently both HMC's could see all three Power 8's.  Granted,
> we only>> kept the 5250 consoles active on the each systems local hmc.>>>>
> Recent change.>> In preparation for a data center move we changed RACK2 and
> HMC02 from>> 10.10.6.x to 10.27.6.x>> That seemed to work.  However HMC02
> can no longer see RACK1 & RACK3.>> Status is "No Connection".  Reference
> code is:  Connecting>> 0002-0004-0000003C>> I did see an archive with this
> same reference code but that quickly>> devolved into a discussion of
> whether or not to put your HMC-to-FSP>> connection on a private vs public
> lan.>>>> I've tried the "reset connection" from the HMC.>> I've tried
> removing and readding the connection.>> I've tried rebooting the HMC>>
> -Your data has been truncated.
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