user manual

18-53
Cisco ONS 15600 SDH Procedure Guide, R8.0
October 2007
Chapter 18 DLPs F300 to F399
DLP- F348 View Circuit Information
Table 18-3 ONS 15600 SDH 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
alarm interface panel (AIP); in the ONS 15600 SDH, 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.
DISCOVERED_TL1 A TL1-created circuit or a TL1-like, CTC-created circuit is
complete. A complete path from source to destination(s)
exists.
PARTIAL_TL1 A TL1-created circuit or a TL1-like, CTC-created circuit is
missing a cross-connect or circuit span (network link), and a
complete path from source to destination(s) does not exist.
CONVERSION_PENDING An existing circuit in a topology upgrade is set to this status.
The circuit returns to the DISCOVERED status when the
topology upgrade is complete. For more information about
topology upgrades, refer to the Cisco ONS 15600 SDH
Reference Manual.