Nortel Networks 3500, NTRN10AN manual Section trace, TID address resolution protocol Tarp

Operation, administration, and maintenance (OAM) features 2-61

Path trace is used by an STS path terminating equipment (PTE) to verify its continuous connection to the intended transmitting STS PTE. Path trace can be monitored on a DS3 STS-1 path facility. It can also be monitored on an OC-3, OC-12, or OC-48 STS-1 path facility if the STS is virtual tributary (VT)-managed. For OPTera Metro 3500 equipped with STX-192 circuit packs (STS-managed), path trace must be monitored on the path terminating equipment such as DSM module, DS3, 10/100BT- P2P, 2xGigE/FC-P2P circuit packs.

Note 1: The following special characters are not supported: ! ” # $ % ’ () * + - . / < = > @ [ ] ^ _ ‘{} ~

Note 2: Path trace can be monitored on the 2x100BT-P2P circuit pack WAN port for STS-1 and STS-3c path facilities.

Note 3: Path trace can be monitored on the 2xGigE/FC-P2P circuit pack for STS-1 STS-3c, STS12c and STS-24c path facilities.

Section trace

Section trace is a user-provisionable message transmitted so that a receiving terminal in a section can verify its continued connection to the intended transmitter. Section trace is a user-provisionable message in one of two formats:

•STRING - 15 bytes long printable alphanumeric ASCII string

Note: The following special characters are not supported: ! ” # $ % ’ () * + - . / < = > @ [ ] ^ _ ‘{} ~

•NUMERIC - any value from 0 through 255 in decimal integer form

Use either of these formats to verify proper fiber connections or detect reflections from optical couplers. When the section trace function is not supported or if no value has been programmed, a numerical value of 01 is transmitted.

TID address resolution protocol (TARP)

The TID address resolution protocol (TARP) is used by TL1-based network elements to convert target identifiers (TIDs) into network service access points (NSAPs). An NSAP is used internally in a SONET communications network as a means of addressing a network element.

TARP is a propagation protocol. TARP uses this propagation method with a distributed database of learned TID/network entity title (NET) mappings. TARP allows network elements to translate between TID and NET by automatically exchanging mapping information with other TL1-based network elements without the need for craftsperson intervention. No additional address provisioning is required at the network element to support TARP.

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004