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Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 8 Performance Monitoring
Enabling Intermediate-Path Performance Monitoring
Figure 8-7 Threshold tab for setting threshold values
Change the threshold if the default value does not satisfy your error monitoring needs. For example,
customers with a critical DS1 installed for 911 calls must guarantee the best quality of service on the
line; therefore, they lower all thresholds so that the slightest error raises a TCA.
8.3 Enabling Intermediate-Path Performance Monitoring
Intermediate-path performance monitoring (IPPM) allows transparent monitoring of a constituent
channel of an incoming transmission signal by a node that does not terminate that channel. Many large
ONS 15454 networks only use line terminating equipment (LTE) not path terminating equipment (PTE).
Table 8-1 shows ONS 15454 cards that are considered LTEs. Figure 8-8 shows the Provisioning > STS
tabs for an OC-3 card.
61945
Threshold tab Provisioning tab Card view
Table 8-1 Traffic Cards That Terminate the Line, Called LTEs
Line Terminating Equipment
EC1-12 OC3 IR 4/STM1 SH 1310
OC12 IR/STM4 SH 1310 OC12 LR/STM4 LH 1310
OC12 LR/STM4 LH 1550 OC48 IR 1310
OC48 LR 1550 OC48 IR/STM16 SH AS 1310
OC48 LR/STM16 LH AS 1550 OC48 ELR/STM16 EH 100 GHz
OC48 ELR/STM16 EH 200 GHz OC192 LR/STM64 LH 1550