ILMI Parameter Group

If your ATM switch does not support the Interim Local Management Interface (ILMI), you can turn off the ILMI address registration on your SunATM interface from the ILMI configuration menu. The following example shows the ILMI configuration menu.

Modifying ba0; Currently ILMI is enabled

[E]Enable ILMI

[D]Disable ILMI

[P]Previous Menu

[M]Main Menu

[X]Exit [?] Help

Enter selection:

Note This parameter group allows you to enable or disable address registration. ILMI is an integral part of the SunATM software stack, and it will always be present when the software is running. This parameter option simply allows interoperability with switching equipment that does not perform address registration by way of ILMI.

Classical IP Parameter Group

Classical Internet Protocol (Classical IP), specified by RFC 1577, is one way of supporting the TCP/IP and UDP/IP protocols in an ATM environment. In Classical IP, an ATM ARP server is used to resolve IP addresses to ATM addresses, replacing the traditional ARP protocol. In this configuration, each host must register with the ARP server when the ATM interface is brought up. For more information on the Classical IP protocols, see “Classical Internet Protocol” on page 67.

One reason ATM ARP is used instead of the traditional ARP is that ATM does not support broadcast (a network capability providing transmission from one point to all points on a network). Because Classical IP over ATM does not support broadcast, you cannot use the ypbind -broadcastUNIX command to automatically locate the NIS server (ypserver) on a Classical IP ATM subnet.

32 SunATM 3U CompactPCI Adapter Installation and User’s Guide • February 2001

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Sun Microsystems 3U manual Ilmi Parameter Group, Classical IP Parameter Group