This MIB allows management of call applications on a network device. A 'call application' is a software module that processes calls, such as data, voice, video, or fax calls.
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Revisions
2003-05-13 00:01
The changes to this MIB now provide call application
statistics for monitoring the call applications.
These call application stats are divided into 3 levels
- per gateway level (Global).
- per application-type level.
- per application-instance level.
| Level/State | Active | History
| -------------+------------------+----------------
| Global lvl| Gauges | Counters
| -------------+------------------+----------------
| App-Type lvl| Gauges records | Counter records
| -------------+------------------+----------------
| App-Inst lvl| Not available | Counter records
v -------------+------------------+----------------
An applicaiton gateway can have multiple types of call
applications aka application scripts. User calls could
be handled by any of this application types (scripts).
Each user call can trigger an instance of this
application type.
An Application instance has a set of countres during
its active and non-active (history) phase. These are
available at App-Inst level records.
App-Type level records have aggregated counters/gauges
from all the application instances of its application
type.
Global level has aggregated counters/gauges from all
application-type records.
Gateway administrators are encouraged to follow
a 'top-down' approach for monitoring and troubleshooting.
This top-down approach emphasizes on polling 'Global
active level gauges' for monitoring load on the gateway
and 'Global history level counters' monitoring errors.
To find out more details about a particular gauge or
counter one can step down a level to App-Type level.
Similarly, to find out further details, one can goto a level
lower at 'Application-Instnace' for find out more details.
Finally, event-logs are available at the lowest level for
applicaiton instances.
Following changes are as per the above mentioned scheme.
- ccapAppGlobalAct group of objects are added to provide
'Active Global lvl' gauges.
- ccapAppGlobalHis group of objects are added to provide
'Active Global lvl' gauges.
- ccapApplicationTable is extended to provide
'Active App-Type lvl' gauges.
- ccapAppTypeHistoryTable is added to provided
'History App-Type lvl' counters.
- ccapAppInstanceHistoryTable is added to provide
'History App-Inst lvl' counters.
This MIB also provides call application interface stats.
The call application interfaces are the servers with
which applications do the transactions for various
services like HTTP, RTSP, TFTP, SMTP, AAA, ASR
(Automatic Speech Recognition), TTS (Text-To-Speech),
flash file read, RAM media recordings.
Following are the new objects/tables to provide
'Application-Interface' statistics.
- ccapAppIntfGlobal group of objects
- ccapAppIntfHTTPTable
- ccapAppIntfRTSPTable
- ccapAppIntfTFTPTable
- ccapAppIntfSMTPTable
- ccapAppIntfAAAMethodListTable
- ccapAppIntfASRTable
- ccapAppIntfTTSTable
- ccapAppIntfFlash group of objects
- ccapAppIntfRAMRecord group of objects
This MIB also provides facility to enable and
disable statistics monitoring for call application at
global level. Applicaion interface statistics can
also be enabled/disabled through this MIB. Statistics
can also be cleared at Global and App-type levels. Hence,
lot of objects which could be reset/cleared are defined
as ZeroBasedCounter32 TC based of Gauge32.
Clearing operation is done either through MIB
objects or through CLI (Command Line Interface). Clear
or resetting operation in applied to a group of countres.
For each group there is a 'discontinuity' object or
'lastResetTime' object provided which specifies the time
when associated group of objects were cleared.
Application infrastructure has facility to capture events
from active application instances and save them in event
log buffer in memory and later to FTP dump file. This is
referred as event logging mechanism. Event logging can
be enabled and disabled either from IOS CLI's or from SNMP
objects provided in this MIB change set. This event log
facility is available at 'Active and History App-Inst lvl'.
Event logging is also available at 'App-Interface lvl',
for per interface-type and per server of each interface
type.
This MIB provides facility to enable/disable application
event log facility for all active application instances.
However, the MIB does not provide objects to get the
event logs, since they can be bulky and degrade the
performance of the system. There are mechanisms to dump
the event logs to either stdout or ftp through IOS CLI
configurations.
1999-09-22 00:00
This MIB allows management of call applications on a
network device. A 'call application' is a software
module that processes calls, such as data, voice,
video, or fax calls.
Initial version 199909220000Z, Nov 22nd, 1999.