The Service Gateway Interface (SGI) feature implements a web services interface to access the policy, subscriber, and session management functionality of the Intelligent Services Gateway (ISG). It allows application developers to author subscriber management applications using commonly available commercial and open source protocols, encoding, and toolkits.
ISG is a framework of components for the policy-based control of sessions and services on network devices. The SGI feature comprises the data model for policy and associated elements and the operational interface to provision, update, delete, and control activation of those policies.
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to
www.cisco.com/go/cfn. An account on Cisco.com is not required.
Restrictions for Service Gateway Interface
The SGI feature does not support HTTP transport policies in Release 12.2(33)SRC.
No client has currently been developed to access the SGI feature in Release 12.2(33)SRC.
ISG is a Cisco IOS and Cisco IOS XE software feature set that provides a structured framework in which edge devices can deliver flexible and scalable services to subscribers. See "Overview of ISG" for further information.
BEEP
Block Extensible Exchange Protocol (BEEP) is a protocol standard that is scalable, efficient, simple, extensible, and robust. BEEP is a framework for designing application protocols.
Benefits of SGI
SGI is a protocol that allows
Cisco IOS software to be controlled using third-party applications, toolkits, and development platforms for web services.
The SGI feature is a common model that can express ISG provisioning in many languages, and it is easy to use.
Enables privilege EXEC mode. Enter your password if prompted.
Step 2
showsgi[session|
statistics]
Displays information about current SGI session. This command shows information about SGI sessions that have been started and are currently running, including the running state. It also shows statistical information about SGI sessions that have been started and are currently running. The following is sample output from this command:
Example:
Router# show sgi session
sgi sessions: open 1(max 10, started 15
session id:1;started at 9:08:05; state OPEN
Router# show sgi statistics
sgi statistics
total messages received 45
current active messages 5; maximum active messages 7
total isg service requests 4
current active services 2; maximum active services 2
sgi process statistics
process sgi handler 1
pid 95, cpu percent (last minute) 1, cpu runtime 10(msec), memory accocated 4200 (bytes)
Step 3
debugsgi [error|
info|
xml|
gsi|
isg-api|
all]
Enables debugging of SGI sessions. The following is sample output from this command when all debugging has been enabled:
Example:
Router# debug sgi all
Router# show debug
SGI:
SGI All debugging is on
SGI Errors debugging is on
SGI XML debugging is on
SGI Informational debugging is on
SGI Generic Service Interface debugging is on
SGI ISG_API Events debugging is on
SGI ISG_API Errors debugging is on
Router#
Router#
*Jul 1 20:55:11.364: SGI: Session created, session Id 7
*Jul 1 20:55:11.372: sgi beep listen app beep[0x66245188]: frame_available: type=M number=1 answer=-1 more=* size=1400
*Jul 1 20:55:11.372: sgi beep listen app beep[0x66245188]: Content-Type: application/xml
<?xml version="1.0" encoding="UTF-8"?>
...
*Jul 1 20:55:11.372: sgi beep listen app beep[0x66245188]: frame_available: type=M number=1 answer=-1 more=. size=111
*Jul 1 20:55:11.372: sgi beep listen app beep[0x66245188]: gitypes:policyGroup>
</objects>
</sgiops:insertPolicyObjectsRequest>
...
*Jul 1 20:55:11.372: SGI: GSI message received, msgid 1, session 7
*Jul 1 20:55:11.376: SGI: XML parsed successfully, request insertPolicyObjectsRequest, msgid 1
*Jul 1 20:55:11.376: SGI: authentication request sent to AAA
*Jul 1 20:55:11.376: SGI: req = [0x67454088] authentication succeeded
*Jul 1 20:55:11.376: SGI: Processing insertPolicyObjectsRequest
*Jul 1 20:55:11.376: SGI: insertPolicyObjectsRequest processing policyGroup:VPDN1, type 1, result: 0
*Jul 1 20:55:11.376: SGI: Processing insertPolicyObjectsResponse
*Jul 1 20:55:11.376: SGI: GSI message sent, msgid 1, session 7
*Jul 1 20:55:12.088: sgi beep listen app beep[0x66245188]: close confirmation: status=+ no error origin=L scope=C
*Jul 1 20:55:12.088: SGI: Session terminating, session Id 7
Step 4
testsgixmlfilename
Verifies the format ofan SGI XML request. The XML file must be copied to the router before it can be used.
Configuration Examples for Service Gateway Interface
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The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to
www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1 Feature Information for Service Gateway Interface
Feature Name
Releases
Feature Information
Service Gateway Interface
12.2(33)SRC
The SGI implements a web services interface to access the policy, subscriber, and session management functionality of ISG.
The following commands were introduced or modified:
debugsgi,
sgibeeplistener,
showsgi,testsgixml.
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Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.