363-206-305
Administration and Provisioning
Issue 3 June 2000
8-35
Manual Cross-Connection Procedure
8
The following steps should be used to provision FiberReach systems for manual
cross-connections:
a. All cross-connections entered by the user are "manual" connections and
must be deleted by the user to change service.
b. All commands to change signal routings (enter or delete) may be service
affecting. A warning and confirmation for the request is issued as explained
in Chapter 11, "Commands and Reports," for the
ent-crs
and
dlt-crs
commands.
c. Manual routing requires that slots be equipped. The
ent-crs
routing
command will check if the slot is equipped and display an error message
denying illegal requests.
d. Manual routing requires that slots be equipped. Therefore, if the last circuit
pack of a protected pair is removed from the slot even if there is no signal
on the circuit pack, the action is alarmed. The "Update" command will be
denied. The manual routing must be deleted before the circuit pack can be
removed and the slot can become unequipped using the "Update"
command.
e. The
rtrv-crs
command displays the cross-connect routing table.
The only restriction on manual cross-connections for FiberReach is that a cross-
connection may not be made with any signal where a cross-connection already
exists. The existing cross-connection must be deleted before a new cross-
connection can be entered.
OC-1 Path Protected Ring Application Example
8
The following example is a path protected ring application with multiple NEs in a
two-fiber ring. The main optical units of each FiberReach node in the ring are
equipped with 26G2-U OLIU circuit packs to transport signals to the next NE as
well as drop signals at the NE. The one or two host nodes are equipped with
27G-U OLIU circuit packs. Valid mapping is provided by termination and pass
through cross-connections. The following paragraphs describe a ring network
example configuration and describe how to create manual cross-connections to
establish the ring network. Figure 8-1 shows the six nodes with dashed lines
indicating the cross-connections.
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