Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual page 494

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
Table 22-13
BB_Credit Buffer Allocation
Defualt BB_credit buffers
Maximum BB_credit buffers
Total number of BB_credit buffers per module
1. ISL = E port or TE port.
The following considerations apply to BB_credit buffers on18-port 4-Gbps Fibre Channel switching
modules:
•
•
•
12-Port 4-Gbps Switching Module BB_Credit Buffers
Table 22-14
Table 22-14
BB_Credit Buffer Allocation Type
Default BB_credit buffers
Maximum BB_credit buffers
Default Performance buffers
Total number of BB_credit buffers per module
Total number of performance buffers per module
1. ISL = E port or TE port.
The following considerations apply to BB_credit buffers on 12-port 4-Gbps switching modules:
•
•
Cisco MDS 9000 Family Fabric Manager Configuration Guide
22-20
18-Port 4-Gbps Multiservice Module BB_Credit Buffer Allocation
BB_credit buffers for ISL connections can be configured from a minimum of 2 buffers to a
maximum of 250 buffers for dedicated rate mode or 16 buffers for shared rate mode.
BB_credit buffers for Fx port mode connections can be configured. The minimum is 2 buffers and
the maximum of 250 buffers for dedicated rate mode or 16 buffers for shared rate mode.
Performance buffers are not supported on this module.
lists the BB_credit buffer allocation for 12-port 4-Gbps switching modules.
12-Port 4-Gbps Switching Module BB_Credit Buffer Allocation
BB_credit buffers for ISL connections can be configured from a minimum of 2 buffers to a
maximum of 250 buffers.
BB_credit buffers for Fx port mode connections can be configured from a minimum of 2 buffers to
a maximum of 250 buffers.
Chapter 22 Configuring Generation 2 and Generation 3 Switching Modules
BB_Credit Buffers Per Port
Dedicated Rate Mode
4-Gbps Speed
1
ISL Fx Port
250 16
250 250
4509
BB_Credit Buffers Per Port
Dedicated Rate Mode
4-Gbps Speed
1
ISL
250
250
145
5488
512 (shared)
OL-17256-03, Cisco MDS NX-OS Release 4.x
Shared Rate Mode
4-Gbps Speed
1
ISL Fx Port
16 16
16 16
Fx Port
16
16
12