Ericsson EFN324, Руководство пользователя, Страница: 13 / 176

Glossary
Figure 3 Basic Physical View of the EFN324
The network and host processors communicate physically through shared
memory. The communication may logically be divided into the following two
groups:

Management traffic to an external management site. This is traffic over IP.
In order for this traffic to flow, a connection through the switch between an
Ethernet port and the host port must be configured. The operator must
also configure an IP address for the host processor.

All other communication. From an operator’s point of view this traffic takes
place ‘under the surface’, since no special configuration or other
involvement from the operator is required for it to happen. Examples of this
type of traffic are control messages from host processor to network
processor, and packets forwarded from the network processor to the host
processor during the switching procedure, for example, IGMP messages.
It is also possible for an operator to directly communicate with the Ethernet
access switch from a terminal through a local COM port.
4.2 Management Interface
An operator communicates with the system through a management interface.
EFN324 offers both a CLI and a MIB interface. The latter may be used by
management systems like PEM. The MIB interface may also be used for
machine­machine communication with overlying management systems.
EFN324
Network processor ­
switch
Host processor
. . .
Ethernet
links
Ethernet
Ports
Host
Port
Local
COM port
Memory
commonly
shared between
host and network
processors