Cisco Designing ATM MPLS Networks

Specific Comments & Errata......Page 1
Desirable Major New Content......Page 2
Table of Contents......Page 3
1.2 Note on Tag Switching and Terminology......Page 4
1.3 MPLS Network Structure......Page 5
1.4 Applications for MPLS......Page 6
1.6 Steps in Designing MPLS Networks......Page 7
Figure 2 Devices in MPLS networks......Page 9
ATM MPLS With Router-based Edge LSRs......Page 10
Dual Backbones......Page 11
Choosing ATM Label Switch Routers......Page 12
Table 2 Choosing MPLS Edge Equipment for ATM MPLS networks......Page 13
2.3 IP+ATM......Page 14
Figure 3 IP+ATM......Page 15
Use of IP+ATM......Page 16
Multiple Edge LSRs and an ATM-LSR......Page 17
Figure 4 Point of Presence Structures for ATM MPLS networks......Page 18
Cisco 6400 and MGX 8850 Edge LSRs......Page 19
3.2 Dimensioning an MPLS Network’s Links......Page 20
Table 5 Network example: approximate bidirectional traffic flows......Page 21
Figure 5 Network design example - geographic layout......Page 22
Figure 6 Network design example - calculating link bandwidths......Page 25
Note on Redundant Pairs of ATM Links......Page 24
Figure 7 Viewpoints of an ATM MPLS network......Page 26
3.3 IP Routing in an MPLS Network......Page 27
MPLS-Specific IP Routing Issues......Page 28
Figure 8 Multiple routing areas and summarization in an ATM MPLS network......Page 29
Destinations......Page 30
Design Calculations: Edge LSRs......Page 31
Table 6 Checking the LVC limits of Edge LSR......Page 32
Edge LSRs: Worked Examples......Page 33
ATM-LSRs With VC Merge: Worked Examples......Page 34
Table 9 Cisco ATM-LSRs and LVC capacity, if VC merge is used......Page 35
Table 11 Cisco ATM-LSRs and LVC Capacity, if VC merge is not used......Page 36
Note on Internet Routing Tables......Page 37
3.5 On-going Network Design......Page 38
VP Tunnels......Page 40
Figure 13 ATM MPLS networks using MPLS-over-PVCs......Page 41
Figure 14 PVC-based migration to dual backbones: another view......Page 42
Migration to Full MPLS......Page 43
Edge LSRs......Page 44
Figure 16 ATM MPLS networks using VP Tunnels......Page 45
Figure 17 Other hybrid network examples......Page 46
Table 14 Using Cisco ATM switches as traditional ATM switches.......Page 47
VP Tunnels and the SCI......Page 48
Figure 18 SCI partitions and virtual trunks......Page 49
Edge LSRs Integrated into Edge Switches......Page 50
VP Tunnel Restrictions and Work-Arounds on the BPX 8650......Page 51
MGX 8850 Edge LSRs connected over a big cloud......Page 52
4.6 VP Tunnels and LVC Usage......Page 53