Cisco Systems 15310-MA Card Protection

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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
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Card Protection
Note The terms “Unidirectional Path Switched Ring” and “UPSR” may appear in Cisco literature. These terms
do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration.
Rather, these terms, as well as “Path Protected Mesh Network” and “PPMN,” refer generally to Cisco's
path protection feature, which may be used in any topological network configuration. Cisco does not
recommend using its path protection feature in any particular topological network configuration.
This chapter describes the card and port protection configurations for the Cisco ONS 15310-MA SDH.
To provision protection, refer to the “Turn Up a Node” chapter in the
Cisco ONS 15310-MA SDH Procedure Guide. Chapter topics include:
• 3.1 Overview, page 3-1
• 3.2 ONS 15310-MA SDH Card and Port Protection, page 3-1
• 3.3 Automatic Protection Switching, page 3-5
• 3.4 External Switching Commands, page 3-5
3.1 Overview
The Cisco ONS 15310-MA SDH has a pair of common control cards (15310E-CTX-K9), each with two
optical ports, and up to four electrical cards (E1_21_E3_DS3_3 or E1_63_E3_DS3_3). 1:1 protection
groups are supported for like pairs of electrical cards, and 1+1 protection groups can be set up between
two optical ports on the same 15310E-CTX-K9 card or between the optical ports on two separate
15310E-CTX-K9 cards.
When two 15310E-CTX-K9 cards are installed, the 15310E-CTX-K9 card is 1:1 protected. The
15310-MA SDH can function in a single 15310E-CTX-K9 configuration mode.
3.2 ONS 15310-MA SDH Card and Port Protection
This section describes the card and port protection methods for the ONS 15310-MA SDH.