DUA1800-0AAA04
Introduction 3-3
Figure 3-1 Ethernet module functions
Repeater Interface. This interface allows the transfer of
Ethernet packets, via the backplane, between the different
modules and the management module. Isolation logic allows a
module to act as a sub-network. See Repeater Functions on page
3-4.
Network Connection. The network interface gives the module
a direct connection to the appropriate networking media.
Management Interface. The management interface is available
if a management module is fitted. It allows modules to be
managed in any of the following ways (dependent on type):
■Statistics relating to traffic status can be taken from each module
by the management module.
■The management module can alter the status of any port on a
module. Ports can be enabled or disabled. The management
module can also test individual ports on a module.
■Local working can be enabled by i solating network traffic over
cable segments from the backplane. Isolation logic allows the
module to act as a sub-network. See Repeater Functions on page
3-4.
S
S
E
E
G
G
M
M
E
E
N
N
T
T
S
S
C
H
A
S
S
I
S
B
B
A
A
C
C
K
K
P
P
L
L
A
A
N
N
E
E
LED
display
network
connections
repeater
functions
isolation repeater
interface
management
interface
Chassis.bk : CHAPTER3 Page 3 Monday, February 10, 1997 1:11 PM