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The iSeries TCP/IP host table is shipped with the LOOPBACK entry. The
LOOPBACK entry has an Internet address of 127.0.0.1 and two host names:
LOOPBACK and LOCALHOST.
The 127.0.0.1 Internet address can be changed (CHGTCPHTE) and a different one
can be added (ADDTCPHTE). The local table command processing programs
ensure that any LOOPBACK host name added or changed in the host table is in
the range of 127.0.0.1 to 127.255.255.254. Multiple loopback host table entries are
allowed in the server host table.
You may alter the LOOPBACK host name or add additional host names using the
(CHGTCPHTE) command.
If the LOOPBACK or LOCALHOST name is changed or removed from the host
table, the name is not valid, unless the domain name server has a LOOPBACK
entry that specifies this value as a host name.
You can define up to four names for each Internet address. If the TCP/IP host is in
your local domain, then it is not necessary to qualify the host with the domain
name. As long as a TCP/IP host is in your local domain, you need only to enter
the host name with the host table entry.
However, if you would like to add TCP/IP hosts that are outside of your local
domain, you need to add these TCP/IP hosts as fully qualified. The fully qualified
host name of SYSNAMEND.ENDICOTT.IBM.COM shows this as an example in Figure 14
on page 21.
Work with TCP/IP Host Table Entries
System: SYSNAM890
Type options, press Enter.
1=Add 2=Change 4=Remove 5=Display 7=Rename
Internet Host
Opt Address Name
_ _______________
_ 9.4.73.211 BERN
_ 9.4.73.212 SYSNAM890
_ 9.4.73.214 MACIAN
_ 9.4.191.76 DNS
_ 127.0.0.1 LOOPBACK
LOCALHOST
Figure 13. Work with Host Table Entries, Display 2 of 2
20 OS/400 TCP/IP Configuration and Reference V5R1