Ip Routing; Snmp; Syslog; Alarm System - ABB EDS500 Series Manual

System concept
3.3.5

IP routing

The EDS500 devices support routing on IP level (layer 3 of the OSI layer model) to create or
participate in a routed environment.
The EDS500 devices use the Routing Information Protocol (RIPv2, RFC2453) to automatically
create routing tables and synchronization. Classless Inter-Domain Routing (CIDR) is
supported. The extensions Triggered Updates and Split Horizon grant in general switching
times of less than a second when the topology is changed.
3.3.6

SNMP

The Simple Network Management Protocol is a network protocol to remotely monitor and
control network devices. A central office can request the runtime parameters and signal
deviations from the ordinary state. The protocol can be read by machines and is transmitted
in code as opposed to e.g. the Syslog protocol that sends messages as plain text. SNMP
packets are (usually) transmitted via UDP/IP.
The devices of the EDS500 series implement SNMP in the versions SNMPv1 (RFC 1155, RFC
1156, RFC 1157), SNMPv2c (RFC 1901, RFC 1905, RFC 1906) and SNMPv3 (RFC 3410).
Contents and extent of the objects (OIDs) that can be accessed with SNMP is defined by
several MIB modules (Management Information Base). They are standardized and consist of:
MIB-2 (SNMPv2- MIB, RFC 3418), Bridge MIB (RFC 4188), Interface MIB (RFC 2863), IP MIB (RFC
4293), TCP MIB (RFC 4022), UDP MIB (RFC 4113), LLDP-MIB (IEEE-802.1AB) and ENTITY-MIB
(RFC 6933). Also, EDS500 devices use a manufacturer-proprietary MIB (ABB-EDS500-MIB),
with objects that allow enhanced device management and detailed access to internal
parameters. The ABB-EDS500-MIB file is available on request.
3.3.7

Syslog

Syslog is a network protocol to transmit log entries in an IP network. The transmission usually
uses UDP/IP and consists of human readable plain text messages including information
about severity and a times tamp.
The EDS500 devices have a log filer on the devices themselves. If a SNTP server (Simple
Network Time Protocol) has been set, then the time stamp is a real date, otherwise it shows
the system up time. In addition, log entries can be sent to a central Syslog server at the time
of the event. The EDS500 devices use a numbered Syslog message scheme so that missing
messages can be detected.
3.3.8

Alarm System

The EDS500 devices have a three-level alarm model.
The alarm model distinguishes between the following levels:
• Notice,
• Warning,
• Alarm.
If an event happens that triggers an alarm then it creates a log entry and optionally sends a
Syslog message.
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Functions overview
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