Port 23 is standard telnet. Port 3270 is non-standard TN3270E. On Sat, Jul 18, 2020 at 10:10 PM Tony Thigpen <t...@vse2pdf.com> wrote: > > Christian, > > IMHO: For use as an OSA-C, the second port is of minimal use. About the > only good use is to attach a local non-routable lan segment so that > local consoles can be isolated from your main network so that the > network people do not mess with your z/OS consoles. > > > Tony Thigpen > > Christian Svensson wrote on 7/18/20 3:01 PM: > > Hi, > > > > I have been experimenting with setting up OSA-ICC cards on a z114. > > These are OSA Express3 cards with 4 ports / 2 channels. Let's look at a > > single channel in this card, named CHPID 200. > > > > These are the configuration parameters for this card: > > > >> Channel ID: 0200 > >> LAN port type: OSA-ICC 3270 > >> > >> Physical Port 0 > >> Server name: [empty] > >> Host IP address: 10.0.0.10 > >> TCP port (1-65535): 23 > >> Subnet mask: 255.255.255.0 > >> MTU size(B): 1492 > >> > >> Physical Port 1 > >> Server name: [empty] > >> Host IP address: 10.0.1.10 > >> TCP port (1-65535): 3270 > >> Subnet mask: 255.255.255.0 > >> MTU size(B): 1492 > >> > >> Default gateway: 10.0.0.1 > > > > My most pressing confusion is related to the IP. A configuration with the > > two ports in the same subnet is considered invalid, yet there is only a > > single channel-level gateway that seems to be definable. > > If I try to assign e.g. 10.0.0.10 and 10.0.0.20 with default gateway > > 10.0.0.1 I get the following error: > > > >> // @@@ Error 1057: Host IP for Physical Port 0 and Physical Port 1 are > > defined in the same segment > > > > If I can only define a single channel-level gateway, and the ports cannot > > be in the same L2, how is this second port intended to be used? One port > > routable and one port accessible only from the same L2? > > > > My second question is if there is any way around the TCP port number not > > being able to be reused. I would love all my OSA-ICC to use TCP port 23, > > but it seems that even though the ports need separate IP addresses, the TCP > > port cannot be the same between the two ports. > > Is that correct? The error I get when I try to re-use the same port is: > > > >> // @@@ Error 1055: Host port value used for previous physical port > > definition: 23 for PORT 0. > > > > Thanks for any insights / experiences. > > > > ---------------------------------------------------------------------- > > For IBM-MAIN subscribe / signoff / archive access instructions, > > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
-- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
