Foundry NetIron M2404C and M2404F Metro Access Switches
Configuring HQoS (Rev.03)
Table of Figures
© 2008 Foundry Networks, Inc.
Page 2 of 98
Table of Figures
Figure 1: Carrier Ethernet Services over MPLS Core (example).......................................... 4
Figure 2: Legacy ‘flat’ QoS Typical Functional Model........................................................ 6
Figure 3: Legacy ‘flat’ QoS vs. Hierarchical QoS Traffic Management ..............................7
Figure 4: Multi-Application SLA.......................................................................................... 9
Figure 5: Multi-Office SLA ................................................................................................10
Figure 6: Multi-Service SLA...............................................................................................10
Figure 7: Main Functional/Architectural Concepts on the Platform ...................................11
Figure 8: Internal Architecture and Main Functional Blocks..............................................13
Figure 9: Traffic Flow through the Device.......................................................................... 16
Figure 10: QoS in Local Switching Path............................................................................. 17
Figure 11: QoS in the Add Path ..........................................................................................19
Figure 12: QoS in the Drop Path .........................................................................................23
Figure 13: QoS in the Pass-through Path ............................................................................25
Figure 14: WRED Drop Probability Per Color (Green/Yellow) .........................................27
Figure 15: End-to-End SLA Verification Using NetIron M2404x ..................................... 32
Figure 16: Network Egress Queue and Network Policies Configuration Flow .................. 37
Figure 17: Service Egress Scheduler and Service Egress Policies Configuration Flow .....38
Figure 18: Service Ingress Scheduler and Service Ingress Policies Configuration Flow ... 39
Figure 19: Providing End-to-End HQoS .............................................................................87