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Packet Over SONET Module Installation and User Guide B-5

Automatic Protection Switching Support

Standards Supported for APS

In addition to the MIB support described above, the Extreme Networks APS

implementation complies with the following standards:

• GR-253-CORE, Synchronous Optical Network (SONET) Transport Systems: Common

Generic Criteria, Bellcore, Issue 2, Revision 2, January 1999.

• ANSI T1.105.01-1998, Synchronous Optical Networks (SONET)—Automatic Protection

Switching, American National Standards Institute, 1998.

• ITU-T G.783 (04/97), Characteristics of Synchronous Digital Hierarchy (SDH) Equipment

Functional Blocks, April 1997.

MIBs Supported for APS

Because no standard MIBs are defined for managing the APS function, Extreme

Networks has defined and implemented an enterprise MIB that provides read-only

support (GET but not SET operations) for APS configuration parameters and status

information. Any of the parameters that can be set with the

config aps commands can

be accessed through using the MIB, and any of the status information displayed by the

show aps command can also be read using the MIB.

You can download the APS enterprise MIB from the Extreme Network World Wide Web

site at the following URL:

http://www.extremenetworks.com/support/documentation.asp

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Extreme Networks PoS Guide de l'utilisateur Page 169