Thanks Philip, The system I'm administering is configured this way and I need the education. This same system I think is using SNA for some of its APPs on the client and I'm trying to understand the entire environment. Dare ----- Original Message ----- From: "Philipp Rusch" <Philipp.Rusch@rusch-edv.de> To: <email@example.com> Sent: Wednesday, December 05, 2001 4:54 PM Subject: Re: Ethernet Card and IP Addresses... > Answers inline, but first a question: what are you trying to accomplish ? > > Oludare schrieb: > > > Hi guys, > > > > I have the following questions: > > > > How do you setup several IP addresses with 1 Ethernet card? > > This is called multi-homing and the AS/400 is perfect in that, just CFGTCP > hit 1 to add another IP-interface to the line you are using. > > > > > What are the benefits or why would one want to do this? > > Benefits arise when you (for instance) need to "more than one" server, webserving > comes to my mind where you would need several "virtual servers" (instances) > to serve different tasks (I am no web-Programmer) and need to bind each instance > to a different IP-address (this is quite common), or your network design needs your > machine to be seen from different IP-schemes, although this is physically one LAN > connection only (migrating from one adressing-scheme to another would be no pain > with this aproach ...) > > > > > Are there any disadvantage(s)? > > There are routing issues, especially if using windows clients which often depend > on a so called "default gateway" and of course this "costs" a little bit of horse power. > > > > > Are all the IPs function at the same level or used equally? > > If you don't depend on a single "default gateway" they are all equal. > > > > > Can all the IPs have one name? > > Yes, but not through a HOSTS table, where this is impossible (the first entry counts) > but with a DNS-Server setup this should be no problem. > Normally this is used the other way round: if you'd have more then one Ethernet card > you could use them "load balanced" in the way that each (different) IP-address of these > interfeaces is noted under the *same* name in your DNS server. DNS is prepared to do > a so called "round robin" routine to switch to the next address for the same host each time > a new request is coming in. Simple, but powerful, take a look at www.ibm.com, this site > consists at least of four different servers (ip-adresses) but all share the same DNS-name. > > > > > > > I know of some other question but I will start from here and thanks for your input. > > > > Just ask, we will try to answer... :-) > > Regards from germany, Philipp Rusch > > > > > Dare > > > > -- > > > > _______________________________________________ > > This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list > > To post a message email: MIDRANGE-L@midrange.com > > To subscribe, unsubscribe, or change list options, > > visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l > > or email: MIDRANGE-Lfirstname.lastname@example.org > > Before posting, please take a moment to review the archives > > at http://archive.midrange.com/midrange-l. > > _______________________________________________ > This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list > To post a message email: MIDRANGE-L@midrange.com > To subscribe, unsubscribe, or change list options, > visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l > or email: MIDRANGE-Lemail@example.com > Before posting, please take a moment to review the archives > at http://archive.midrange.com/midrange-l. >
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