What are the node limitations for each of the ring topologies of Cisco ONS 15454?
A. From Release 3.0 onwards, the Cisco ONS 15454 supports two Bidirectional Line Switched Rings (BLSRs) with up to 16 ONS 15454 nodes. Support for up to 32 Nodes is introduced in Release 3.4, although switch times can be longer than the industry standard 60msec. For Unidirectional Path Switched Ring (UPSR) networks, the number of nodes is theoretically unlimited, but a practical limit would be 50.
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