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SNMP
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Switches are commonly managed by SNMP applications. These network
management applications communicate with managed devices using IP.
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... addresses if it is to be managed. Also, if the clients and servers
in the workgroup are managed by SNMP, they will need IP addresses.
The workgroup, therefore, will need to appear as one or more IP
subnets ...
... NAT MIB that could be queried by
SNMP to find the specific local-to-global mappings in effect.
There are also issues for DNS ...
... DNS),
mechanisms that use IP addresses for identification (e.g., SNMP),
security and authentication mechanisms ...
... renumbering may be fairly simple. If the router configurations are
available in machine-readable form, as text files or parsable SNMP
data, it is a relatively simple task to define a tool to examine IP
addresses ...
... ours), the definition statement (or equivalent if the routers are
configured with SNMP), and current IP address. We then want to
compare the addresses ...
... IP
address on the router (e.g., E0) is reachable, since this will permit
SNMP connectivity to the router. Once the router is reachable with
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... router. Once the router is reachable with
SNMP, the unnumbered interface can be queried through the MIB
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... routers include telnets to virtual console
ports, SNMP, and TFTP. Network management scripts may contain hard-
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A critical and complex problem will be converting SNMP databases,
which are usually organized by IP address ...
... Abnormal condition indications can be sent to several places that may
have hard-coded IP addresses, such as SNMP trap servers, syslogd
servers, etc.
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... network management scripts. Other performance
information may be sent to syslogd, or be kept in SNMP data bases.
Load-generating scripts used for performance ...
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Accounting records may be sent periodically to syslogd or as SNMP
traps. Alternatively, the SNMP ...
... SNMP
traps. Alternatively, the SNMP manager or other management
applications may periodically poll accounting information in routers ...