Cisco Catalyst 2950 Software Configuration Manual page 249

Chapter 12 Configuring LRE
Table 12-6 SNR Requirements for Downstream Rates for the Catalyst 2950ST-8 LRE and the Catalyst 2950ST-24 LRE
Switches (continued)
Gross Data
Profile Rate
LRE-10-5 12.5
LRE-10-3 12.5
LRE-10-1 12.5
LRE-15-5 16.667
LRE-15-3 16.667
LRE-15-1 16.667
LRE-998-15-4 16.667
LRE-997-10-4 12.5
LRE-2 2.08
LRE-3 3.13
LRE-4 4.17
Table 12-7 SNR Requirements for Upstream Rates for the Catalyst 2950ST-8 LRE and the Catalyst 2950ST-24 LRE
Switches
Gross Data
Profile Rate
LRE-4-1 1.56
LRE-7 8.333
LRE-8 9.375
LRE-5 6.25
LRE-10 12.5
LRE-15 18.75
LRE-10-5 6.25
LRE-10-3 3.125
LRE-10-1 1.56
LRE-15-5 6.250
LRE-15-3 3.125
LRE-15-1 1.563
LRE-998-15-4 4.688
LRE-997-10-4 4.688
LRE-2 2.08
LRE-3 3.13
LRE-4 4.17
78-11380-12
Quadrature
Amplitude
Modulation Theoretical
(QAM) Minimum SNR
64 25
64 25
64 25
256 31
256 31
256 31
256 31
256 31
4 13
4 13
4 13
Theoretical
QAM Minimum SNR
4 13
16 19
64 25
4 13
16 19
64 25
4 13
16 19
4 13
4 13
16 19
4 13
64 25
64 25
4 13
4 13
4 13
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Medium Noise
Low Noise SNR SNR
27 29
27 29
27 29
33 35
33 35
33 35
33 35
33 35
15 17
15 17
15 17
Medium Noise
Low Noise SNR SNR
15 17
21 23
27 30
15 17
21 23
27 30
15 17
21 23
15 17
15 17
21 23
15 17
27 29
27 29
15 17
15 17
15 17
Configuring LRE Ports
High Noise
SNR
32
32
32
39
39
39
39
39
20
20
20
High Noise
SNR
20
26
34
20
26
34
20
26
20
20
26
20
32
32
20
20
20
12-17