Overview; Circuit Properties; Chapter 7 Circuit And Tunnel - Cisco ONS 15600 Reference Manual

7.1 Overview

7.1 Overview

You can create circuits across and within ONS 15600 SDH nodes and assign different attributes to
circuits. For example, you can:
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You can provision circuits at any of the following points:
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7.2 Circuit Properties

The ONS 15600 SDH Circuits window
and card view, is where you can view information about circuits, including:
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Create one-way, two-way (bidirectional), or broadcast circuits.
Assign user-defined names to circuits.
Assign different circuit sizes.
Automatically or manually route circuits.
Automatically create multiple circuits with autoranging.
Provide full protection to the circuit path.
Provide only protected sources and destinations for circuits.
Define a secondary circuit source or destination that allows you to interoperate an ONS 15600 SDH
subnetwork connection protection (SNCP) ring with third-party equipment SNCPs.
Set SNCP circuits as revertive or nonrevertive.
Before cards are installed. The ONS 15600 SDH allows you to provision slot and circuits before
installing the traffic cards.
After you preprovision the Small Form-factor Pluggables (SFPs) (also called provisionable port
modules [PPMs]).
After cards and SFPs are installed and ports are enabled. Circuits do not actually carry traffic until
the cards and SFPs are installed and the ports are in the Unlocked-enabled state; the
Locked-enabled,maintenance state; or the Unlocked-disabled,automaticInService state. Circuits
carry traffic as soon as the signal is received.
Name—The name of the circuit (user-assigned or automatically generated).
Type—For the ONS 15600 SDH, the circuit type is HOP (high-order circuit).
Size—The circuit size can be VC3, VC4, VC4-4c, VC4-8c, VC4-16c, or VC4-64c. ASAP optical
ports also allow circuit sizes of VC4-2c and VC4-3c. For time slot availability on concatenated VCs,
see the "7.2.1 Concatenated VC4 Time Slot Assignments" section on page
Protection—The protection type; see the
Direction—The circuit direction, either two-way or one-way.
Status—The circuit status; for details, see the
Source—The circuit source in the format: node/slot/port/virtual container. If an ASAP PPM port is
the circuit source, the port format is PIM-PPM-port, where pluggable interface module (PIM) and
PPM values are 1 through 4 (for example, p1-1-1). PPMs have only one port.
Destination—The circuit destination in the format: node/slot/port/virtual container. If an ASAP
PPM port is the circuit destination, the port format is PIM-PPM-port, where PIM and PPM values
are 1 through 4 (for example, p1-1-1). PPMs have only one port.
(Figure 7-1 on page 7-3), which is available from network, node,
"7.2.4 Circuit Protection Types" section on page
"7.2.2 Circuit Status" section on page
Chapter 7 Circuits and Tunnels
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