Quality of Service Guide QoS and QoS Policies 
Edition: 01 3HE 11014 AAAC TQZZA 123
 
Table 17 PBO for SAPs and Platforms
Traffic 
Direction 
and PBO 
Count
Second / Third Generation 
Adapter Cards and 
Platforms
First Generation 
Adapter Cards
Per SAP 
CoS Queue
Per SAP 
Shaper
Per Customer 
Shaper
Fabric Shaper 7705 SAR-8 / 
7705 SAR-18
Fabric Shaper 
7705 SAR-8 / 
7705 SAR-18
Sum of 
adjusted 
MSS 
shapers ≤ 
fabric 
shapers
Sum of 
adjusted 
MSS 
shapers > 
fabric 
shapers
Access 
ingress
✓✓✓ internal 
packet size, 
no FCS
internal 
packet size, 
no FCS
✓
auto 3 3 3 3 internal 
packet size, 
no FCS 
(fabric 
shaper rate)
3
add 50 222 2 3 2
subtract 
50
666 6 3 6
Per CoS 
Queue
Bypass Fabric Shaper 
(on 
Non-Chassis 
Based Nodes) 
Otherwise 
Bypass
Fabric Shaper 7705 SAR-8 / 
7705 SAR-18
Fabric Shaper 
7705 SAR-8 / 
7705 SAR-18
Network 
ingress
✓ n/a ✓✓ ✓
add 50 2n/a2 2 2
subtract 
50
6n/a6 6 6