1 Service Requirements from Enterprise??™s Perspective
Figure 10.22 Typical corporate network with multiple remote sites and a data center
Data center
Circuit-
bonding
equipment
NxOCn
NxOCn Remote site
Customer voice
network
Customer LAN
Circuit-
bonding
equipment
Circuit-
bonding
equipment
Remote site
Customer voice
network
Customer LAN
Circuit-
bonding
hub
Voice switch (DCS)
Core Ethernet node
NxT1 NxT1
NxT1
Access network
296 Chapter 10
provided to the end user. Any improvements in efficiency can help reduce cost for the
carriers and improve profit margin.
From To Application Bandwidth
Bandwidth
Provided
Bandwidth
Not Used
Ineffi ciency
Percent
Headquarters Remote Site A Voice 8 POTS Lines 1 T1 16 DS0s 66%
Headquarters Remote site B Voice 8 POTS lines 1 T1 16 DS0s 66%
Headquarters Data center Voice 6 POTS lines 1 T1 18 DS0s 75%
Headquarters Remote site A LAN 10 Mbps DS3 35 Mbps 78%
Headquarters Remote site B LAN 10 Mbps DS3 35 Mbps 78%
Headquarters Data center Data 500 Mbps OC48 1900 Mbps 79%
Data center ISP Internet access 10 Mbps DS3 25 Mbps 78%
Circuit bonding can be used to help carriers improve profit and reduce cost and at the
same time provide Ethernet services to all areas, including those not served by fiber.
Pages:
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701