Cisco ONS 15454 SDH Procedure Manual page 369

Chapter 14 Add and Remove Nodes
NTP-D213 Remove an MS-SPRing Node
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
The following procedure minimizes traffic outages during node removals. You will delete all circuits that
Caution
originate and terminate on the node that will be removed. You will also verify that they do not enter and
exit the node on different VC4s and/or VC3s, VC11s, or VC12s. If they do, you will delete and recreate
the circuits, and traffic will be lost during this time.
If you remove a node that is the only building integrated timing supply (BITS) timing source for the ring,
Caution
you also remove the only source of synchronization for all the nodes in that ring. Circuits that leave the
ring to connect to other networks synchronized to a Stratum 1 clock will experience a high level of
pointer adjustments, which might adversely affect traffic performance.
According to local site practice, complete the
Step 1
page 15-5
Complete the
Step 2
Complete the
Step 3
already logged in, continue with Step 2.
Create a diagram of the MS-SPRing where you will remove the node. You can draw the MS-SPRing
Step 4
manually, or you can print it from CTC by performing the following steps:
a.
b.
c.
d.
e.
f.
Referring to the MS-SPRing diagram, identify the following:
Step 5
•
•
Write down the slot and port of the MS-SPRing in the node.
78-17194-01
This procedure removes a node from an MS-SPRing.
None
NTP-D41 Create the MS-SPRing, page 5-13
As needed
Onsite
Provisioning or higher
for all the nodes in the ring.
"DLP-D195 Verify Timing in a Reduced Ring" task on page
"DLP-D60 Log into CTC" task on page 17-49
From the View menu, choose Go to Network View.
Click the Provisioning > MS-SPRing tabs.
Choose the desired MS-SPRing, then click Edit.
In the MS-SPRing window, verify that all the port information is visible. If not, press Ctrl and drag
the node icons to a new location so the information can be viewed.
Complete the "DLP-D146 Print CTC Data" task on page
Close the MS-SPRing window by choosing Close from the File menu.
The node that is connected through its west port to the target (removal) node. For example, if you
were removing Node 4 in
The node that is connected through its east port to the node that will be removed. In
Node 3 is connected through its east port to Node 4.
"NTP-D108 Back Up the Database" procedure on
Figure 14-3, Node 1 is connected through its west port to Node 4.
Cisco ONS 15454 SDH Procedure Guide, R7.0
NTP- D213 Remove an MS-SPRing Node
18-82.
at the node you will remove. If you are
18-37.
Figure 14-3,
14-7