Sun Microsystems 3U manual Using Variables in the aarconfig File

TABLE 5-3describes the required, optional, and illegal fields for each flag type. If a field is unused, it is represented by a hyphen.

TABLE 5-3 /etc/opt/SUNWconn/atm/aarconfigFile Flag Requirements and Options

Interface *	Host	ATM Address	VCI	Flags	*
required	illegal	SVC only	illegal	l	local information
required	illegal	required	illegal	L	local information on server
required	illegal	required	illegal	a	access list entry
required	required	or*	or*	t	permanent table entry
required	illegal	xor**	xor**	s	server address/PVC
required	illegal	illegal	illegal	m	manual address registration

*or – Means one or the other required, but using both is also legal. **xor – Means one or the other required, but using both is illegal.

Note –Group entries in the aarconfig file in a designated order: the local (l or L) entry first, followed by any other flags in any order. You only need to maintain the ordering within entries for each physical interface; for example, all of the ba0 entries can appear first, and then all of the ba1 entries, etc.

Using Variables in the aarconfig File

Because the prefix portion of an ATM address specifies the ATM switch, a number of hosts specified in an aarconfig file can have ATM addresses that share the same prefix. To simplify setting up the aarconfig file, you can define variables that contain part of an ATM address.

A variable’s name is an identifier consisting of a collection of no more than 32 letters, digits, and underscores. The value associated with the variable is denoted by a dollar sign followed immediately by the variable name.

Note –Use variables in the ATM address field only. They are not valid in any of the other fields in an entry.

You can use a colon to concatenate multiple variables to represent a single ATM address expression. Thus, if one variable, v1, is set to 11:22 and another variable, v2, is set to 33:44, the sequence $v1:$v2 represents 11:22:33:44. You can include hexadecimal numbers with variables in the expression. The expression 45:$v1:$v2 would have the value 45:11:22:33:44.

Chapter 5 Editing SunATM Configuration Files 47