3Com CoreBuilder 7000, Operation Manual, Page: 45 / 264

Automatic Configuration Procedures 45
Table 8 shows the possible results of auto-discovery in this case.
Auto-discovery sets the IME type by comparing the system ID of the local
switch with that of the peer switch. The switch with the larger system ID
is set to user-side and the switch with the smaller system ID is set to
network-side. Table 9 shows the results of auto-discovery.
3Com Switch Peer Running ILMI 3.X
When the peer switch is a 3Com switch running an ILMI version lower
than 4.0, E-IISP is still the preferred protocol but now auto-discovery does
not operate and the UNI factory default is not automatically reset to
E-IISP. In this case, you need to use LMA to reset the interface type to
E-IISP in both switches. For more information on using the LMA to reset
the interface type, see “Update Port Interface Type” on page 123 in the
Management Guide. Table 10 shows how this is done.
Table 8 Auto-Discovery of Interface Type for 3Com Switch/ILMI 4.0 Peer
My Configured
Interface Type
Peer
Configured
Interface Type
My Resulting
Interface Type Peer Resulting
Interface Type
E-IISP *
* Auto-discovery resets the local interface type factory default UNI to the preferred
E-IISP.
E-IISP E-IISP E-IISP
E-IISP IISP E-IISP E-IISP
IISP E-IISP E-IISP E-IISP
IISP IISP IISP IISP
Table 9 Auto-Discovery of IME Type for 3Com Switch/ILMI 4.0 Peer
Compare My Parameter
with Peer’s
My Resulting IME Type Peer Resulting IME Type
my system ID larger User-Side Network-Side
my system ID smaller Network-Side User-Side
Table 10 Setting Interface Type for 3Com Switch/ILMI 3.X Peer
My Configured
Interface Type
Peer
Configured
Interface Type
My Resulting
Interface Type Peer Resulting
Interface Type
E-IISP E-IISP E-IISP E-IISP