Cisco Systems 15454M6DC Manual De Usuario
9-5
Cisco ONS 15454 Installation and Operations Guide
November 2001
Chapter 9 Ethernet Operation
Multicard and Single-Card EtherSwitch
Caution
Whenever you drop two STS-3c multicard EtherSwitch circuits onto an Ethernet card and delete only
the first circuit, you should not provision STS-1 circuits to the card without first deleting the
remaining STS-3c circuit. If you attempt to create a STS-1 circuit after deleting the first STS-3c
circuit, the STS-1 circuit will not work and no alarms will indicate this condition. To avoid this
condition, delete the second STS-3c prior to creating the STS-1 circuit.
the first circuit, you should not provision STS-1 circuits to the card without first deleting the
remaining STS-3c circuit. If you attempt to create a STS-1 circuit after deleting the first STS-3c
circuit, the STS-1 circuit will not work and no alarms will indicate this condition. To avoid this
condition, delete the second STS-3c prior to creating the STS-1 circuit.
9.2.2 Single-Card EtherSwitch
Single-card EtherSwitch allows each Ethernet card to remain a single switching entity within the ONS
15454 shelf. This option allows a full STS-12c worth of bandwidth between two Ethernet circuit points.
15454 shelf. This option allows a full STS-12c worth of bandwidth between two Ethernet circuit points.
illustrates a single-card EtherSwitch configuration.
Figure 9-4
A Single-card EtherSwitch configuration
Seven scenarios exist for provisioning single-card EtherSwitch bandwidth:
1.
STS 12c
2.
STS 6c + STS 6c
3.
STS 6c + STS 3c + STS 3c
4.
STS 6c + 6 STS-1s
5.
STS 3c + STS 3c +STS 3c +STS 3c
6.
STS 3c +STS 3c + 6 STS-1s
7.
12 STS-1s
Note
When configuring scenario 3, the STS 6c must be provisioned before either of the STS 3c circuits.
9.2.3 ONS 15454 and ONS 15327 EtherSwitch Circuit Combinations
The following table shows the Ethernet circuit combinations available in ONS 15454s and ONS 15327s
ONS Node
ONS Node
Router
Ethernet card #3
Router
Router
Router
Ethernet card #1
Ethernet card #4
Ethernet card #2
VLAN B
VLAN A
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