Jake, it looks readable to me. What's your email client?

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu]
> On Behalf Of R.S.
> Sent: Tuesday, June 19, 2012 11:58 PM
> To: IBM-MAIN@listserv.ua.edu
> Subject: Re: HMC & EoR SWITCH
> 
> Second NIC in HMC is used for connectivity with corporate LAN.
> Reasons:
> 1. Remote access to HMC. It's built in for years.
> 2. Call home. Modem connectivity is abandoned, so VPN is (will be -
> depends on your HW level) the only option. That requires connectivity
> to
> corpo lan.
> 3. NTP.
> 4. 3270 sessions, available on HMC for years.
> 
>   - so it would be big surprise if IBM decided to prohibit it.
> 
> Regarding "internal LAN" HMC-SE: in the past it was private LAN, but
> nowadays there are more and more reasons why one needs to connect
> something else to the LAN. Examples:
> - NTP with PPS
> - ftp access to SE, required to perform some actions
> - connection between multiple CPCs required to upload IOCDS to "remote"
> CPC (that means: you work on CPC A and want to update IOCDS in CPC B).
> 
> Again, all the cases are IBM-designed, so in fact IBM assume such
> connectiovity.
> 
> 
> The risks: IHMO minimal. Assumed that corpo LAN is not Internet and
> it's
> actually dedicated VLAN for datacenter staff or rather part of the
> staff
> which really need the access. In such case the most dangerous event
> which can happen is human error. Result can be temporary lack of
> communication between SE and HMC. No big harm.
> 
> 
> Disclaimer: I did NOT say that you should connect to internal (and
> external) LAN anyhing you imagine, without justification and without
> any
> cosnideration.
> 
> --
> Radoslaw Skorupka
> Lodz, Poland
> 
> 
> 
> 
> 
> 
> W dniu 2012-06-19 22:49, Hal Merritt pisze:
> > I was lead to believe that the second set of NIC's in the SE's and
> HMC were for optional redundant connectivity.  But I am aware of some
> exploiting those NIC's for other things such as automation.
> >
> > My personal druthers is to use the second NIC on the HMC for external
> connectivity to the web server and stay completely off of the HMC/SE
> circuit. That said, my current configuration is the recommended
> physical port on the IBM supplied switch to a network heavily isolated
> from the main company network.
> >
> >
> >
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu]
> On Behalf Of Jousma, David
> > Sent: Tuesday, June 19, 2012 1:24 PM
> > To: IBM-MAIN@listserv.ua.edu
> > Subject: Re: HMC & EoR SWITCH
> >
> > Reports?   IBM provides a second set of network adapters in the SE
> and the HMC just for this purpose.   It is a requirement to use CEC
> operations in SA390.   It is also required to use the Web interface for
> the HMC.
> >
> > I seriously doubt that IBM would discontinue having their own private
> switched network between the various hardware parts/pieces.    It may
> be that the switch is built-in to the CEC now, and not a separate
> standalone box as was in the past.
> >
> > _________________________________________________________________
> > Dave Jousma
> > Assistant Vice President, Mainframe Services david.jou...@53.com
> > 1830 East Paris, Grand Rapids, MI  49546 MD RSCB2H p 616.653.8429 f
> 616.653.2717
> >
> >
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu]
> On Behalf Of Hal Merritt
> > Sent: Tuesday, June 19, 2012 1:11 PM
> > To: IBM-MAIN@listserv.ua.edu
> > Subject: Re: HMC & EoR SWITCH
> >
> > I've heard reports from the CE's about customers trying to
> interconnect the HMC and SE's with company LANs and thus causing all
> kinds of problems.
> >
> > It would be no surprise to me if IBM decided to prohibit customer
> supplied appliances between the HMC and SE's.
> >
> >
> >
> >
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu]
> On Behalf Of R Hey
> > Sent: Monday, June 18, 2012 11:41 PM
> > To: IBM-MAIN@listserv.ua.edu
> > Subject: HMC & EoR SWITCH
> >
> > Hi,
> >
> > 1-
> > Heard hat IBM won't provide HMC switch in future.
> >
> > True/F ?
> >
> > 2-
> > Have you done, or know it can be done:
> > to remove IBM HMC SWITCH,
> > hook HMC & SE's to CISCO End of Row switch ?
> >
> > TIA,
> > Rez
> 
> 
> 
> 
> 
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