1-24Overview

Table 1-6

Summary of network topology line rates

Network topology

Supported on platforms

Supported on platforms

 

with VTX-series circuit

with STX circuit packs

 

 

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

Yes

 

 

 

 

See Note 2

 

 

 

 

 

 

 

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

Yes

 

 

 

 

See Note 2

 

 

 

 

 

 

 

Full VT BLSR

No

No

Yes

No

No

 

 

 

 

See Note 3

See Note 3

 

 

 

 

 

 

VT-assigned BLSR

No

No

Yes

No

No

 

 

 

 

See Note 3

See Note 3

 

 

 

 

 

 

STS-1 assigned BLSR

No

No

Yes

No

Yes

 

 

 

 

See Note 2

 

 

 

 

 

 

 

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

Yes

Yes

Yes

Yes

Yes

 

 

 

 

 

 

RPR over BLSR (working and protection

No

No

Yes

No

Yes

channels)

 

 

 

See Note 2

 

 

 

 

 

 

 

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

Yes

Yes

Yes

Yes

Yes

interconnection

 

 

 

 

 

 

 

 

 

 

 

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.

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

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Nortel Networks NTRN10AN, 3500 manual 24Overview