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 > > > > > > -- > Tre tej wiadomoci moe zawiera informacje prawnie chronione Banku > przeznaczone wycznie do uytku subowego adresata. 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Warszawy XII Wydzia Gospodarczy Krajowego > Rejestru Sdowego, nr rejestru przedsibiorców KRS 0000025237, NIP: > 526-021-50-88. > Wedug stanu na dzie 01.01.2012 r. kapita zakadowy BRE Banku SA (w > caoci wpacony) wynosi 168.410.984 zotych. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
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