Cisco 15327 - Manual (Page 426)

25-2
Ethernet Card Software Feature and Configuration Guide, R7.2
Chapter 25 CE-1000-4 Ethernet Operation
CE-1000-4 Ethernet Features
Figure 25-1 CE-1000-4 Point-to-Point Circuit
The CE-1000-4 cards allow you to provision and manage an Ethernet private line service like a
traditional SONET/SDH line. The CE-1000-4 card provides carrier-grade Ethernet private line services
and high-availability transport.
The CE-1000-4 card carries any Layer 3 protocol that can be encapsulated and transported over Ethernet,
such as IP or IPX. The Ethernet frame from the data network is transmitted into the gigabit interface
converter (GBIC) on a CE-1000-4 card. The CE-1000-4 card transparently maps Ethernet frames into
the SONET/SDH payload using packet-over-SONET/SDH (POS) encapsulation. The POS circuit with
encapsulated Ethernet is then multiplexed onto an optical card like any other SONET synchronous
transport signal (STS) or SDH synchronous transport mode (STM). When the payload reaches the
destination node, the process is reversed and the data is transmitted from the GBIC in the destination
CE-1000-4 card onto the Ethernet of the data network. The POS process is covered in detail in
Chapter 20, “POS on ONS Ethernet Cards.”
The CE-1000-4 card supports ITU-T G.707 and Telcordia GR-253 based standards. It allows an errorless
soft reset. An exception to the errorless soft reset occurs when there is a provisioning change during the
reset, or if the firmware is replaced during the software upgrade process. In these cases, the reset is
equivalent to a hard reset. To perform a soft reset on a CE-1000-4 card using CTC, refer to the
Cisco ONS 15454 Procedure Guide or the Cisco ONS 15454 SDH Procedure Guide.
CE-1000-4 Ethernet Features
The CE-1000-4 card has four front-end Ethernet ports which use standard GBIC connectors for Gigabit
Ethernet. Ethernet Ports 1 through 4 each map to a POS port with a corresponding number. These
Ethernet ports can be daisy chained.
At the Ethernet port level, a user can configure several characteristics:
• Port name
• Administrative state
• Automatic in-service (AINS) soak time
• Flow control
• Flow control watermark levels
• Auto negotiation
The CE-1000-4 card forwards valid Ethernet frames unmodified over the SONET/SDH network.
Information in the headers is not affected by the encapsulation and transport. For example, IEEE 802.1Q
information will travel through the process unaffected.
The CE-1000-4 supports Jumbo frames up to a total maximum of 10004 bytes, including Ethernet cyclic
redundancy check (CRC), by default. In CTC you can also configure a total maximum frame size of 1548
bytes, including Ethernet CRC.
115781
Point-to-Point Circuit
ONS Node ONS Node
Ethernet Ethernet