
Configuring Multiline Services
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10-3
Figure 10-1. Multiline Circuit Types
Benefits of a Multiline Configuration
Using a multiline configuration has the following advantages:
• Greater bandwidth between two sites
Bandwidth is the rate at which traffic travels on the circuit. A multiline circuit
has greater bandwidth because traffic can travel over more than one data path.
• Greater degree of fault tolerance
In a multiline configuration, a single circuit has multiple data paths. If one
data path becomes disabled, traffic can travel over another data path.
Multiline Example
Suppose that your network uses Nortel Networks routers to connect two sites, one
in New York City and one in Los Angeles (Figure 10-2)
. A high volume of
important data travels between the two sites via three synchronous lines. Grouping
the three synchronous lines into one multiline circuit:
• Reduces congestion by distributing the volume of traffic more evenly among
the three lines
• Decreases the chance of data loss if a connection fails
A
B
COM1 COM1
Multiline Circuit Multiline Circuit
Data paths
Physical lines
COM2 COM3
LS0021A
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