APS on multilink bundles

Overview

APS on multilink bundles consists of a working and protection bundle which provide bidirectional APS protection to each other. The members of a working or protection multilink bundle must belong to the same working or protection line of the APS group. User traffic is not sent on the protection line.

The NFM-P supports APS on MLPPP and IMA bundles. In IMA bundles, IMA cells are sent on the protection line as a keep-alive signal during an APS switchover.

APS 1+1 configuration on the channelized MDA provides protection to all the channels on the protected SONET/SDH port and to all of the multilink bundles with member that links reside on the protected SONET/ SDH port.

APS bundles on multiple NEs

You can configure APS bundles to provide bidirectional APS protection across multiple NEs. MC APS bundles are supported on the 7705 SAR and 7750 SR.

You can use APS to protect against failure by configuring the working bundle on one NE, and configuring the protection bundle of the same APS bundle group on a different NE. The two NEs connect to each other with an IP link that is used to establish a signaling path between them.