Cisco Systems 15454M6DC Manual De Usuario
9-6
Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 9 Ethernet Operation
Ethernet Circuit Configurations
.
9.3 Ethernet Circuit Configurations
Ethernet circuits can link ONS nodes through point-to-point, shared packet ring, or hub and spoke
configurations. Two nodes usually connect with a point-to-point configuration. More than two nodes
usually connect with a shared packet ring configuration or a hub and spoke configuration. This section
includes procedures for creating these configurations and also explains how to create Ethernet manual
cross-connects. Ethernet manual cross-connects allow you to cross connect individual Ethernet circuits
to an STS channel on the ONS 15454 optical interface and also to bridge non-ONS SONET network
segments.
configurations. Two nodes usually connect with a point-to-point configuration. More than two nodes
usually connect with a shared packet ring configuration or a hub and spoke configuration. This section
includes procedures for creating these configurations and also explains how to create Ethernet manual
cross-connects. Ethernet manual cross-connects allow you to cross connect individual Ethernet circuits
to an STS channel on the ONS 15454 optical interface and also to bridge non-ONS SONET network
segments.
Note
Before making Ethernet connections, choose a circuit size from STS-1, STS-3c, STS-6c, or STS-12c.
Note
When making an STS-12c Ethernet circuit, Ethernet cards must be configured as single-card
EtherSwitch. Multi-card mode does not support STS-12c Ethernet circuits.
EtherSwitch. Multi-card mode does not support STS-12c Ethernet circuits.
9.3.1 Point-to-Point Ethernet Circuits
The ONS 15454 can set up a point-to-point (straight) Ethernet circuit as Single-card or Multicard.
Multicard EtherSwitch limits bandwidth to STS-6c of bandwidth between two Ethernet circuit points,
but allows adding nodes and cards and making a shared packet ring. Single-card EtherSwitch allows a
full STS-12c of bandwidth between two Ethernet circuit points.
Multicard EtherSwitch limits bandwidth to STS-6c of bandwidth between two Ethernet circuit points,
but allows adding nodes and cards and making a shared packet ring. Single-card EtherSwitch allows a
full STS-12c of bandwidth between two Ethernet circuit points.
Table 9-4
ONS 15454 and ONS 15327 Ethernet Circuit Combinations
15327
Single-Card 15327
Single-Card 15327
Multicard
15454
Single-Card 15454
Single-Card 15454
Multicard
six STS-1s
three STS-1s
one STS 12c
six STS-1s
two STS 3cs
one STS 3c
two STS 6cs
two STS 3cs
one STS 6c
one STS 6c and
two STS 3cs
two STS 3cs
one STS 6c
one STS 12c
one STS 6c and
six STS-1s
six STS-1s
four STS 3cs
two STS 3cs and
six STS-1s
six STS-1s
twelve STS-1s