Network and Management Overview

The Megabit Modem CRA-C provides an SNMP agent that supports several MIBs for the management of the system. The SNMP agent can process datagrams received from both the Ethernet interface (LAN) and the ADSL interface (Line). The agent and the protocol stack complies with the following RFCs:

•RFC 1155 Structure of Management Information (SMI)

•RFC 1157 Simple Network Management Protocol (SNMP)

•RFC 826 Address Resolution Protocol (ARP)

•RFC 792 Internet Control Message Protocol (ICMP)

•RFC 791 Internet Protocol (IP)

•RFC 768 User Datagram Protocol (UDP)

MIB and Trap Support

Each managed device has configuration, status, and statistical information that defines its functionality and operational capabilities. These elements, together, are the MIB for the device being managed. The MIB defines the kind of information an NMS can retrieve from a managed device and the settings an NMS can control in a managed device.

Megabit Modem CRA-C supports the following MIBs:

•RFC 1213 MIB II Management Information Base for Network Management of TCP/IP-Based Internet:MIB-II supported groups: system, interfaces, IP, ICMP, UDP, and SNMP groups

•RFC 1215 A Convention for Defining Traps for Use with the SNMP supported objects: ColdStart, linkUp, linkDown, and authenticationFailure traps. Link status traps are sent for events related to Ethernet.

•RFC 1493 Definition of Managed Objects for Bridges supported objects: Base, Spanning Tree, and transparent bridging groups.

Megabit Modem CRA-C User Manual

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