Cisco PIX 520 - PIX Firewall 520, Online Help Manual

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System Properties>PIX
Administration>SNMP
The SNMP panel allows you to configure the PIX Firewall unit for monitoring by Simple Network Management
Protocol (SNMP) management stations.
SNMP defines a standard way for network management stations running or PCs on workstations to monitor the
health and status of many types of devices, including switches, routers, and the PIX Firewall.
The following sections are included in this Help topic:
SNMP Terminology
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PIX Firewall SNMP
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Field Descriptions
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Adding Management Stations
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Editing Management Stations
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Deleting Management Stations
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Applying Changes to the PIX Firewall
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SNMP Terminology
Management station—Network management stations running or PCs on workstations, use the SNMP
protocol to administer standardized databases residing on the device being managed. Management stations
can also receive messages about events, such as hardware failures, which require attention.
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Agent—In the context of SNMP, the management station is a client and an SNMP agent running on the
PIX Firewall is a server.
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OID—The SNMP standard assigns a system object ID (OID) so that a management station can uniquely
identify network devices with SNMP agents and indicate to users the source of information monitored and
displayed.
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MIB—The agent maintains standardized data structures called Management Information Databases, or
MIBs which are compiled into management station. MIBs collect information, such as packet, connection,
and error counters, buffer usage, and failover status. MIBs are defined for specific products, in addition to
MIBs for the common protocols and hardware standards used by most network devices. SNMP
management stations can browse MIBs or request only specific fields. In some applications, MIB data can
be modified for administrative purposes.
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Trap—The agent also monitors alarm conditions. When an alarm condition defined in a trap occurs, such
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