- Nortel Network Multiservice Platform User's Guide

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1-24 Overview

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004

Table 1-6

Summary of network topology line rates

Network topology Supported on platforms

with VTX-series circuit

packs

Supported on platforms

with STX circuit packs

OC-3 OC-12 OC-48 OC-48 OC-192

Dual-homed subtending rings (UPSR) Yes Yes Yes Yes Yes

Linear add/drop multiplexer Yes Yes Yes Yes No

Linear point-to-point Yes Yes Yes Yes Yes

Matched nodes (UPSR) Yes Yes Yes Yes Yes

See Note 1

Mixed RPR and TDM traffic over BLSR No No Yes No

See Note 2

Yes

Mixed RPR and TDM traffic over UPSR Yes Yes Yes Yes Yes

Optical hubbing Yes Yes Yes Yes Yes

Path-in-line ring (virtual ring) (on BLSR) No No Yes No

See Note 2

Yes

Full VT BLSR No No Yes No

See Note 3

VT-assigned BLSR No No Yes No

See Note 3

STS-1 assigned BLSR No No Yes No

See Note 2

Yes

Path-in-line ring (virtual ring) (on UPSR) Yes Yes Yes Yes Yes

RPR over BLSR (working and protection

channels)

No No Yes No

See Note 2

Yes

RPR over UPSR Yes Yes Yes Yes Yes

Single-homed subtending rings (UPSR) Yes Yes Yes Yes Yes

UPSR Yes Yes Yes Yes Yes

UPSR to non-OPTera Metro 3500 BLSR

interconnection

Yes Yes Yes Yes Yes

Note 1:

If interconnecting two mixed traffic rings (VT and STS traffic), STS traffic must be used at the

gateway network element.

Note 2:

OC-48 BLSR is supported on OPTera Metro 3500 equipped with VTX-series switched matrix

in slots 13 and 14.

Note 3:

STX-192 circuit pack is an STS-managed switch matrix in slots 13 and 14.