REVIEW DRAFT—CISCO CONFIDENTIAL
14-10
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter14 Ethernet Operation
14.3 E-Series Applicat ion
The operation of a G-Series card in transponder mode is als o similar to the operation of a G-Series card
in SDH mode:
•G-Series Ethernet statistics are available for ports in both modes.
•Ethernet port level alarms and conditions are available for ports in both modes.
•Jumbo frame and non-jumbo frame operation is the same in both modes.
•Collection, reporting and threshold crossing conditions for all existing counters and perform ance
monitoring (PM) parameters are the same in both modes.
•SNMP and RMON support is the same in both modes.
14.3 E-Series Application
The E-Series cards incorporate Layer 2 sw itching, whereas the G-Series card is a st raight mapper card.
E-Series cards in multicard Etherswitch Group or single-card EtherSwitch support virtual local area
networks (VLANs), IEEE 802.1Q, STP, and IEEE 802.1D. The E-Series card in port-mapped mode
configures the E-Series card to be a mapper card and disable s the Layer 2 functions. An ONS 15454 SDH
holds a maximum of ten Ethernet cards, and you can insert Ethernet cards in any multipurpose slot.

14.3.1 E-Series Modes

An E-Series card operates in one of three modes: Multicard EtherSwitch Group, Single-card
EtherSwitch, or Port-mapped. Within an ONS 15454 SDH containing multiple E-Series cards, each
E-Series card can operate in any of the three separate modes. At the Ethernet card view in CTC, click
the Provisioning > Ether Card tabs to reveal the card modes.
Note Port-mapped mode eliminates issues inherent in other E-Series modes and detailed in the field noti ce,
“E-Series Ethernet Line Card Packet Forwarding L imitations.”

14.3.1.1 E-Series Multicard EtherSwitch Group

Multicard EtherSwitch Group provisions two or more Ethernet cards to act as a single Layer 2 switch.
It supports one VC4-3c circuit, two VC4-2c circuits, or six VC4 circuits. Each multicard sw itch may
connect up to a total of VC4-3c in SDH circuits. When provisioned as an add or drop node of a shared
packet ring circuit, the effective bandwidth doubles, supporting VC4-3c in each direction of the ring.
Figure 14-9 illustrates a multicard EtherSwitch configuration.