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Cisco ONS 15310-CL, ONS 15310-MA, and ONS 15310-MA SDH Ethernet Card Software Feature and Configuration Guide, R9.1 and R9.2
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Chapter 17 CE-Series Ethernet Cards
CE-100T-8 Ethernet Card
CE-100T-8 Overview
The CE-100T-8 is a Layer 1 mapper card with eight 10/100 Ethernet ports. It maps each port to a unique
SONET circuit in a point-to-point configuration. Figure 17-1 illustrates a sample CE-100T-8
application. In this example, data traffic from the Fast Ethernet port of a switch travels across the
point-to-point circuit to the Fast Ethernet port of another switch.
Figure 17-1 CE-100T-8 Point-to-Point Circuit
The CE-100T-8 cards allow you to provision and manage an Ethernet private line service like a
traditional SONET line. CE-100T-8 card applications include providing Ethernet private line services
and high-availability transport. It supports ITU-T G.707 and Telcordia GR-253 based standards for
SONET.
The CE-100T-8 offers full TL1-based provisioning capability. Refer to the Cisco ONS SONET TL1
Command Guide for CE-100T-8 TL1 provisioning commands.
CE-100T-8 Ethernet Features
The CE-100T-8 card has eight front-end Ethernet ports which use standard RJ-45 connectors for
10BASE-T Ethernet/100BASE-TX Ethernet media. Ethernet Ports 1 through 8 each map to a POS port
with a corresponding number. The console port on the CE-100T-8 card is not functional.
The CE-100T-8 cards forward valid Ethernet frames unmodified over the SONET network. Information
in the headers is not affected by the encapsulation and transport. For example, included IEEE 802.1Q
information will travel through the process unaffected.
The ONS 15454 CE-100T-8 and the ONS 15310 CE-100T-8 support maximum Ethernet frame sizes of
1600 bytes including the CRC. The MTU size is not configureable and is set at a 1500 byte maximum
(standard Ethernet MTU). Baby giant frames in which the standard Ethe rnet frame is augmented by
IEEE 802.1 Q tags or MPLS tags are also supported. Full Jumbo frames (9000 byte maximum) are not
supported.
The CE-100T-8 cards discard certain types of erroneous Ethernet frames rather than transport them over
SONET. Erroneous Ethernet frames include corrupted frames with cyclic redundancy check (CRC)
errors and undersized frames that do not conform to the minimum 64-byte length Ethernet standard.
Note
Many Ethernet attributes are also available through the network element default feature. For more
information on NE defaults, refer to the “Network Element Defaults” appendix in the Cisc o ONS 15454
Reference Manual.

Autonegotiation, Flow Control, and Frame Buffering

On the CE-100T-8 card, Ethernet link auto negotiation is on by default when the speed or duplex of the
port is set to auto. The user can also set the link speed, duplex, selective auto negotiation, and flow
control manually under the card-level Provisioning tab of CTC.
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Point-to-Point Circuit
Ethernet Ethernet
ONS 15310-CL ONS 15310-CL