Sun Microsystems SunATM 3U, Инструкция по установке и эксплуатации

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Chapter 4 Configuring the SunATM Interfaces 35
To simplify references to ATM addresses in the SunATM software, several system-
defined variables are built into the software. Variables are referenced with the
$
operator, as in UNIX shell scripts.
TABLE 4-3
summarizes the system-defined
SunATM ATM address variables.
Note – The
$prefix
variable, and any other variables that use it (including
$myaddress
and
$localswitch_server
), may not be used on interfaces that are
not running ILMI.
ATM addresses are represented by 20 colon-separated octets, with each octet made
up of 1 or 2 hexadecimal digits. You can combine variables representing portions of
an ATM address with other variables and/or octets to make up a complete address.
For example,
$prefix:aa:bb:cc:dd:ee:ff:$sel
represents a valid ATM
address.
ATM ARP Server Address
If you configured the Classical IP instance as a client, you must also enter the
address of the ARP server. This parameter, like the local ATM address, must be a
20-byte ATM address. See “ATM Address Formats and Variables” on page 34 for a
discussion of ATM address formats and variables.
TABLE 4-3
Predefined SunATM Variables
Variable Description
prefix
The 13-byte prefix associated with the local switch.
mac
The 6-byte medium access control (MAC) address associated
with the local host or interface.
sel
The default 1-byte selector for the local interface.
macsel
The concatenation of
$mac:$sel
.
myaddress
Concatenation of
$prefix:$mac:$sel
, resulting in the
default address for the local interface.
sunmacsel
N Concatenation of one of a series of reserved MAC addresses
and
$sel
to create a block of reserved ATM ARP server
addresses. N should be a decimal number in the range 0–199.
localswitch_server
Concatenation of
$prefix
, a unique reserved MAC address,
and
$sel
. When used as a server address, restricts server
access to clients connected to the local switch only.