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This soft copy for use by IBM employees only.
That is basically all that is required to configure a simple ATM CIP network.
Table 34 (Page 2 of 2). IX Status Messages and Causes
IX Status Message Possible Causes Suggestions
ACN mismatch Each switch has a
different ATM cluster
number.
•
Change the ATM
address of one of the
switches so that both
have the same
cluster number.
•
Set each end of the
link to use NNI
protocols if
connecting different
clusters.
7.2 Configuring LAN Emulation
The IBM 8285 Control Point can provide the Forum-Compliant LAN Emulation
server functions (LES/BUS) and the client (LEC) function. To enable these
functions on the 8285 ATM Control Point, it is necessary to configure and enable
LAN Emulation on it.
7.2.1 8285 LAN Emulation Functions Overview
The IBM 8285 Control Point can provide the Forum-Compliant LAN Emulation
server functions (LES/BUS) and the client (LEC) function. It supports up to two
LES/BUSe simultaneously with any combinations of ELAN types, such as two
token-ring ELANs (TR/LEs), two Ethernet ELANs (ETH/LEs), and one TR/LE and
one ETH/LE. In addition, it supports both TR and ETH LECs simultaneously but it
cannot have two LECs with the same ELAN type.
7.2.2 LAN Emulation Parameters
The only parameters you will need in order to configure LAN Emulation functions
are:
•
ATM Address
This is the 20-byte ATM address to be assigned to the switch′s LEC and
LES/BUS components as well as its to CIP interface. This address is
comprised of five basic parts:
1. ATM network prefix (bytes 1-11)
2. ATM cluster number (ACN) (byte 12)
3. ATM hub number (HN) (byte 13)
4. End station identifier (ESI) (bytes 14-19)
5. ATM selector field (SEL) (byte 20)
In the IBM 8285 there is only one command, SET DEVICE ATM_ADDRESS, to
define the ATM address and it is to configure the ATM address for the CIP
interface. The addresses of LAN Emulation components are automatically
assigned based on the CIP interface address by changing the selector field
of it. Table 35 on page 132 shows the Forum-Compliant LAN Emulation
addresses are assigned.
Chapter 7. IBM 8285 Configuration 131