Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual page 486

Buffer Credit Allocation
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Figure 22-5
The minimum BB_credits required to bring up a port is two buffers.
Figure 22-5
500 BB credits
Figure 22-6
switching modules. The minimum BB_credits required to bring up a port is two buffers.
Figure 22-6
250 BB credits
Cisco MDS 9000 Family Fabric Manager Configuration Guide
22-12
shows the default BB_credit buffer allocation model for 24-port 8-Gbps switching modules.
BB_Credit Buffer Allocation in 24-port 8-Gbps Switching Modules
All ports
shared (8 Gpbs)
32 BB credits
Dedicated
1 Gbps 2 Gbps
500 BB credits
shows the default BB_credit buffer allocation model for 4/44-port 8-Gbps Host-Optimized
BB_Credit Buffer Allocation in 4/44-port 8-Gbps Switching Modules
All ports
shared (8 Gpbs)
32 BB credits
Dedicated
1 Gbps 2 Gbps
250 BB credits
Chapter 22 Configuring Generation 2 and Generation 3 Switching Modules
24-port module
Mixed
Shared
32 BB credits
4 Gbps
500 BB credits
4/44-port module
Mixed
Shared
32 BB credits
4 Gbps
250 BB credits
All ports
dedicated (2 Gbps)
500 BB credits
8 Gbps
500 BB credits
All ports
dedicated (2 Gbps)
125 BB credits
8 Gbps
125 BB credits
OL-17256-03, Cisco MDS NX-OS Release 4.x