Cisco ONS 15327 Manual page 20

New Features and Functionality
DCC Tunnels
SONET provides four data communications channels (DCCs) for network element operations,
administration, maintenance, and provisioning: one on the SONET Section layer and three on the
SONET Line layer. With Release 3.3 the ONS 15327 uses the Section DCC (SDCC) for ONS 15327
management and provisioning. You can use the Line DCCs (LDCCs) and the SDCC (when the SDCC is
not used for ONS 15327 DCC terminations) to tunnel third-party SONET equipment across ONS 15327
networks.
A DCC tunnel is a series of connection points that map third-party equipment SDCCs to ONS 15327
LDCCs. DCC tunnel end-points are defined by Slot, Port, and DCC type, where DCC can be either the
SDCC, Tunnel 1, Tunnel 2, or Tunnel 3 (LDCCs). You can link an SDCC to an LDCC (Tunnel 1, Tunnel
2, or Tunnel 3), and an LDCC to an SDCC. You can also link LDCCs to LDCCs and link SDCCs to
SDCCs.
The ONS 15327 OC-3 card supports tunnels on all four ports. Each ONS 15327 and 15454 can support
up to 32 DCC tunnels. The maximum number of optical ports available on a 15327 is 16 (four-port OC-3
cards installed in all high-speed slots). Each port can support four different DCC tunnels (one section
and three line). This allows 64 (4 x 16) tunnel terminations. Because each tunnel must have two
terminations, the ONS 15327 can support a maximum of 32 DCC tunnel connections.
For details on DCC tunnels you can create on the ONS 15327 and instructions on how to create them,
consult the Cisco ONS 15327 User Documentation, Release 3.3.
Port Naming
Release 3.3 provides the ability to store a name with each ONS 15327 traffic card port. Right-click the
port to view the name. Other port naming features include:
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Search for Circuit by Name
Release 3.3 allows you to search for circuits by circuit name, or by a substring included in the circuit
name. The substring search allows you to jump down an alphabetically sorted list of circuits to those
beginning with a particular letter. Enter the circuit name (or a substring included in the name) in the
Circuit Name Search dialog box and click "Find Next." You can search up or down the list of circuits.
The search tool selects the circuit bearing the name you type. Once you have found the circuit, you can
open it by double-clicking the selected row.
Release Notes for Cisco ONS 15327 Release 3.3
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Node and network alarm and history panels: when an alarm affects a named port, or a circuit that
traverses a named port, the port name is displayed in the alarm.
Circuit creation: if a port is named, CTC displays the port name and port number.
Node and network circuit list: if either or both circuit end points are named, CTC displays the port
name and port number.
Node provisioning: if any port is named, CTC displays the port name and the port number (panes
affected include line and threshold).
Node maintenance: if any port is named, CTC displays the port name and the port number
(loopback).
Node performance data: if any port is named, CTC displays the port name and port number.
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