Nokia 7705 - Page 90

QoS and QoS Policies
90
Quality of Service Guide
3HE 11014 AAAC TQZZA Edition: 01
Figure 19 and Figure 20 illustrate the functionality of fabric shapers in per-destination
mode and aggregate mode, respectively.
Referring to Figure 19, once the per-destination prioritization and scheduling takes
place, as described in previous sections in this chapter, the per-destination adapter
card shapers take effect. With per destination shapers, the maximum amount of
bandwidth that each destination adapter card can receive from the fabric can be
controlled. For example, the maximum amount of bandwidth that adapter card 1 can
switch to the remaining adapter cards, as well as the amount of bandwidth switched
back to adapter card 1, can be configured at a set rate.
Figure 19 Fabric Shapers in Per Destination Mode
Aggregate/bulk sum shaping regardless
of destination from an ingress card
✓
Table 9 Fabric Profile Modes Options and Capabilities (Continued)
Capability Per Destination Mode Aggregate Mode
Adapter Card 1
20174
CoS-X
Exp
Out-Prof
BE
In-Prof
Strict
Destination adapter
card 1
Exp
In-Prof
BE
Out-Prof
Exp
Out-Prof
BE
In-Prof
Strict
Exp
In-Prof
BE
Out-Prof
Per Forwarding
Class Queuing
Round Robin
Legend:
CoS-8
CIR
All access ingress
and network
ingress traffic
CIR
PIR
PIR
CIR
Rate-1
Rate-2
CoS-1
PIR
Per Destination Priority
Based Scheduling
To Fabric
Per Destination
Shapers
Destination adapter
card 2