Datatek AIX V5.3 (32/64 bit kernel) - Manual (Page 8)

I P - C o m m K i t I n s t a l l a t i o n a n d A d m i n i s t r a t i o n G u i d e
f o r A I X – R e l e a s e 1 . 0 . 2 2
11/28/05 Datatek Applications Inc. 8
the same 10Base-T hub are on the same LAN segment, and almost always have the same
subnet mask. If the host and UTM connect to the same subnet, then you can find out the subnet
mask from the output of the ifconfig command. In the previous example, the netmask field in the
report shows that the subnet mask assigned to le0 is ffffff00.
The subnet mask reported by ifconfig can’t be used directly to configure the UTM. The value
ffffff00 is an 8-digit hexadecimal representation of a 32-bit mask. Unfortunately, the UTM expects
this value in the Internet dot representation. To perform the conversion, divide the 8-digit value
into four 2-digit fields, and convert each field to decimal. Concatenate the four decimal fields,
placing a “.” (dot) between field. For example, ffffff00 converts to 255.255.255.0.
If the host and UTM do not attach to the same subnet, your IP network administrator must provide
you with an appropriate subnet mask for the UTM. In addition, the administrator must provide
you with the IP address of a gateway router. This gateway must reside on the same subnet as
the UTM, and must know how to route packets from the UTM to the host computer. Again, you
need the gateway address in numeric form.
3.3 UTM I NSTALLATION
Consult the UTM User’s Manual, Section 3, for instructions on how to install the UTM and I/O
distribution board in the BNS node.
After you have installed the UTM and I/O distribution board in the BNS node, you must configure
the UTM. The initial configuration of the UTM must be done through its console port. You can
access the UTM console port in a variety of ways. For example, you can connect a “dumb”
terminal directly to the console port on the I/O distribution board. You can also connect the
console port into the BNS network through a SAM or TY module, and then access the console
through a terminal or host that is connected to the network. Section 3 of the UTM User’s Manual
shows how to make connections to the UTM’s console port.