18-14
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 18 Network Reference
18.3.3 Optical Performance for ROADM Rings and Linear Networks
The following tables show the pass/fail criteria for eight and sixteen ROADM nodes.
shows
the pass/fail criteria for eight ROADM nodes (seven spans) required for any-to-any node circuit
reconfigurations:
•
All nodes in the ring are ROADM.
•
Span losses are equal.
See
for a list of cards in each class. A dash (—) indicates the spans that are not supported.
6
17 dB
—
—
19 dB
22 dB
18 dB
—
17 dB
18 dB
—
7
15
1
dB
—
—
17 dB
21 dB
16 dB
—
15
1
16 dB
—
1.
0.5 dB of OSNR impairment recovered by FEC margin @ BER>10-6
Table 18-13
Span Loss for 32-Channel Ring and Linear Networks with ROADM and OADM Nodes Using SMF Fiber
Number of
Spans
10 Gbps
2.5 Gbps
Class A
Class B
Class C
Class I
Class D
Class E
Class F
Class G
Class H
Class J
Table 18-14
Pass/Fail Criteria for 32-Channel, Eight-Node ROADM Rings Using SMF Fiber
Span
Loss (dB)
Amplifiers
Installed
10 Gbps
2.5 Gbps
Class A
Class B Class C Class I
Class D
Class E Class F Class G Class H Class J
1
OPT-PRE only
Yes
<7
<7
Yes
Yes
Yes
Yes
Yes
Yes
—
2
OPT-PRE only
Yes
<7
<7
Yes
Yes
Yes
Yes
Yes
Yes
—
3
OPT-PRE only
Yes
<7
<7
Yes
Yes
Yes
<7
Yes
Yes
—
4
OPT-PRE only
Yes
<7
<7
Yes
Yes
Yes
<7
Yes
Yes
—
5
OPT-PRE only
Yes
<7
<7
Yes
Yes
Yes
<7
Yes
Yes
—
6
OPT-PRE only
Yes
<7
<7
Yes
Yes
Yes
<7
Yes
Yes
—
7
OPT-PRE and
OPT-BST/
OPT-BST-E
Yes
<7
<7
Yes
Yes
Yes
<7
Yes
Yes
—
8
OPT-PRE and
OPT-BST/
OPT-BST-E
Yes
<7
<7
Yes
Yes
Yes
<7
Yes
Yes
—
9
OPT-PRE and
OPT-BST/
OPT-BST-E
Yes
<7
<7
Yes
Yes
Yes
Yes
Yes
Yes
—
10
OPT-PRE and
OPT-BST/
OPT-BST-E
Yes
<7
<7
Yes
Yes
Yes
Yes
Yes
Yes
—
11
OPT-PRE and
OPT-BST/
OPT-BST-E
Yes
<7
<7
Yes
Yes
Yes
Yes
Yes
Yes
—
12
OPT-PRE and
OPT-BST/
OPT-BST-E
Yes
<7
<7
Yes
Yes
Yes
Yes
Yes
Yes
—
Summary of Contents for ONS 15454 DWDM
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