Cisco Systems ONS 15600 manual Circuit Status

Chapter 7 Circuits and Tunnels

7.2.2 Circuit Status

Table 7-1		STS Mapping Using CTC (continued)
Starting
STS	STS-3c		STS-6c	STS-9c	STS-12c	STS-18c	STS-24c	STS-36c	STS-48c	STS-192c
178	Yes		No	No	No	No	No	No	No	No
181	Yes		Yes	Yes	Yes	Yes	No	No	No	No
184	Yes		Yes	Yes	No	Yes	No	No	No	No
187	Yes		Yes	No	No	Yes	No	No	No	No
190	Yes		No	No	No	Yes	No	No	No	No

7.2.2 Circuit Status

The circuit statuses that appear in the Circuit window Status column are generated by CTC based on an assessment of conditions along the circuit path. Table 7-2shows the statuses that can appear in the Status column.

Table 7-2 ONS 15600 Circuit Status

	Status	Definition/Activity
	CREATING	CTC is creating a circuit.
	DISCOVERED	CTC created a circuit. All components are in place and a
		complete path exists from circuit source to destination.
	DELETING	CTC is deleting a circuit.
	PARTIAL	A CTC-created circuit is missing a connection or circuit
		span (network link), a complete path from source to
		destination(s) does not exist, or a MAC address change
		occurred on one of the circuit nodes and the circuit is in need
		of repair (in the ONS 15454, the MAC address resides on the
		AIP; in the ONS 15600, the MAC address resides on the
		backplane EEPROM).
		In CTC, circuits are represented using cross-connects and
		network spans. If a network span is missing from a circuit,
		the circuit status is PARTIAL. However, a PARTIAL status
		does not necessarily mean a circuit traffic failure has
		occurred, because traffic might flow on a protect path.
		Network spans are in one of two states: up or down. On CTC
		circuit and network maps, up spans appear as green lines,
		and down spans appear as gray lines. If a failure occurs on a
		network span during a CTC session, the span remains on the
		network map but its color changes to gray to indicate that the
		span is down. If you restart your CTC session while the
		failure is active, the new CTC session cannot discover the
		span and its span line does not appear on the network map.
		Subsequently, circuits routed on a network span that goes
		down appear as DISCOVERED during the current CTC
		session, but appear as PARTIAL to users who log in after
		the span failure.
Cisco ONS 15600 Reference Manual, R7.2

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