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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter7 Card Provisioning
Provisioning IPPM
7.4 Provisioning IPPM
Intermediate-Path Performance Monitoring (IPPM) allows you to transparently monitor traffic
originating on DS-1, DS-3, DS3E and DS3XM cards (Path Terminating Equipment) as it passes through
EC-1, OC-3, OC-12, OC-48, and OC-192 cards (Line Terminating Equ ipment). To use IPPM, you create
the STS circuit on the DS-N cards, then enable IPPM on the EC-1 or OC-N cards that carry the circuit.
Note For Release 3.0 and later, IPPM is enabled for near-end (originating) traffic only. Far-end
(terminating) IPPM will be enabled in a future release.
For example, suppose you have an STS circuit that originates and terminates on DS-N cards at Nodes 1
and 4. You want to monitor the circuit as it passes through OC-N cards at Nodes 2 and 3. To do this, you
enable IPPM on the OC-N card by selecting the appropriate STS, in this example, STS 1 (Figure7-3).
Figure7-3 IPPM provisioned for STS 1 on an OC-12 card
After enabling IPPM, performance is displayed on the Performance tab fo r th e OC-48 c ard. IPPM
enables per-path statistics for STS CV-P (coding violations), STS ES-P (errored seconds), STS FC-P
(failure count), STS SES-P (severely errored seconds), and STS UAS-P ( unavailable seconds). Only one
STS per port can be monitored at one time. See Chapter 8, “Performance Monitoring” for a definition of
every parameter.