Filter
Top Products
12-17
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 12 Configuring LRE
Configuring LRE Ports
Ta b l e 12-7 SNR Requirements for Upstream Rates for the Catalyst 2950ST-8 LRE and the Catalyst 2950ST-24 LRE
Switches
Profile
Gross Data
Rate
QAM
Theoretical
Minimum SNR
Low Noise SNR
Medium Noise
SNR
High Noise
SNR
LRE-4-1 1.56 4 13 15 17 20
LRE-7 8.333 16 19 21 23 26
LRE-8 9.375 64 25 27 30 34
LRE-5 6.25 4 13 15 17 20
LRE-10 12.5 16 19 21 23 26
LRE-15 18.75 64 25 27 30 34
LRE-10-5 6.25 4 13 15 17 20
LRE-10-3 3.125 16 19 21 23 26
LRE-10-1 1.56 4 13 15 17 20
LRE-15-5 6.250 4 13 15 17 20
LRE-15-3 3.125 16 19 21 23 26
LRE-15-1 1.563 4 13 15 17 20
LRE-998-15-4 4.688 64 25 27 29 32
LRE-997-10-4 4.688 64 25 27 29 32
LRE-2 2.08 4 13 15 17 20
LRE-3 3.13 4 13 15 17 20
LRE-4 4.17 4 13 15 17 20
Ta b l e 12-8 SNR Requirements for Downstream Rates for the Catalyst 2950ST-24 LRE 997 Switches
Profile
Gross Data
Rate
QAM
Theoretical
Minimum SNR
Low Noise SNR
Medium Noise
SNR
High Noise
SNR
LRE-12-9 12.500 256 31 33 35 38
LRE-12-3 12.500 256 31 33 35 38
LRE-9 9.375 64 25 27 29 32
LRE-9-6 9.375 64 25 27 29 32
LRE-9-4 9.375 64 25 27 29 32
LRE-9-3 9.375 64 25 27 29 32
LRE-6 (default) 6.250 16 19 21 23 25
LRE-6-4 6.250 16 19 21 23 25
LRE-6-3 6.250 16 19 21 23 25
LRE-4 4.688 8 16 18 20 23
LRE-4-3 4.688 8 16 18 20 23