Sun Microsystems 3U - Manual (Page 97)

Chapter 8 SunATM and Solaris Networking Features 75
The SunATM software has been designed to take advantage of this framework if it is
installed on a system running Solaris 2.6, 7, or 8. The files necessary for the ATM
SNMP agent to be recognized by the master agent (
atm.reg and atm.rsrc ) are
copied under /etc/snmp/conf by the S00sunatm startup script if it detects that
the system is running Solaris 2.6, 7, or 8. SNMP requests pertaining to the ATM
Forum subtree (
atmForum ) are forwarded to the atmsnmpd from the master agent.
In addition, atmsnmpd binds, by default, to port 1000, rather than 161, under Solaris
2.6 or later. The UDP port may still be changed using atmadmin , but the default will
be 1000 in Solaris 2.6, 7, or 8.
ATM and Logical Interfaces
The SunATM software supports logical interfaces in the LAN Emulation
environment. Logical interfaces allow you to assign multiple IP addresses to a single
Emulated LAN interface. A logical interface name consists of three parts: the device
name (in the case of SunATM LAN Emulation,
lane ); the major number, which
corresponds to the lane instance number; and the minor number, which
distinguishes the logical interfaces on a single physical interface. The format of a
LAN Emulation logical interface name is
lane N : X, where N is the major number
and X is the minor number.
Each logical interface will be associated with a unique IP hostname and address. All
logical interfaces on a given physical interface will be associated with the same ATM
and MAC addresses. Configure logical interfaces by placing multiple entries for a
given interface in the
/etc/opt/SUNWconn/atm/atmconfig file.
Consider the following rules when you use logical interfaces with the SunATM
software:
■ Only one signalling protocol (UNI 3.0, 3.1, or 4.0) is supported per interface, and
must appear in the first entry for that interface.
■ Only one Classical IP hostname may be assigned to an interface; it can appear in
any entry, in any order, in
/etc/opt/SUNWconn/atm/atmconfig .
■ The first lane N entry on an interface must be for lane N :0 , or simply lane N.
lane N and lane N :0 are identical and interchangeable.
■ IP limits the number of logical interfaces on a physical interface to 256
(the minor number X must be in the range 0 - 255) in Solaris 2.5.1, and to 8194
(the minor number X must be in the range0 - 8193) in Solaris 2.6 and later
releases.