Cisco 15327 - Manual (Page 394)

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Ethernet Card Software Feature and Configuration Guide, R7.2
Chapter 23 E-Series and G-Series Ethernet Operation
E-Series Modes
E-Series Multicard EtherSwitch Group
Multicard EtherSwitch group provisions two or more Ethernet cards to act as a single Layer 2 switch.
Figure 23-11 illustrates a multicard EtherSwitch configuration. Multicard EtherSwitch limits bandwidth
to STS-6c of bandwidth between two Ethernet circuit points for the ONS 15454 or ONS 15454 SDH
E-Series cards and STS-3c of bandwidth between ONS 15327 E-Series cards, but allows you to add
nodes and cards and make a shared packet ring.
Figure 23-11 Multicard EtherSwitch Configuration
Caution If you terminate two STS-3c/VC4-2c multicard EtherSwitch circuits on an Ethernet card and later delete
the first circuit, also delete the remaining STS-3c/VC4-2c circuit before you provision an STS-1/VC4
circuit to the card. If you attempt to create an STS-1/VC4 circuit after only deleting the first
STS-3c/VC4-2c circuit, the STS-1/VC4 circuit will not work and no alarms will indicate this condition.
To avoid this situation, delete the second STS-3c/VC4-2c before creating an STS-1/VC4 circuit.
E-Series Single-Card EtherSwitch
On all E-Series cards, Single-card EtherSwitch allows each Ethernet card to remain a single switching
entity within the ONS node.
Figure 23-12 illustrates a single-card EtherSwitch configuration.
ONS Node ONS Node
ONS Node
ONS Node
Router
Ethernet card 3
Router
Router
Router
Ethernet card 1
Ethernet card 4
Ethernet card 2
Shared packet ring
VLAN A
45133