Port Fibre Channel/4-Port Gigabit Ethernet Multiservice Module Bb_Credit Buffers; Port 4-Gbps Switching Module Bb_Credit Buffers - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

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 15-8

18-Port Fibre Channel/4-Port Gigabit Ethernet Multiservice Module BB_Credit Buffers

Table 15-11
Table 15-12
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 15-13
Table 15-13
BB_Credit Buffer Allocation Type
Default BB_credit buffers
Maximum BB_credit buffers
Default Performance buffers
Cisco MDS 9000 Family CLI Configuration Guide
15-18
Example Speed and Rate Configuration on a 24-Port 4-Gbps Switching Module
2
1
4-Gbps 4-Gbps
Dedicated Dedicated
lists the BB_credit buffer allocation for 18-port 4-Gbps multiservice modules.
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
Chapter 15 Configuring Generation 2 and Generation 3 Switching Modules
3 4
4-Gbps 1-Gbps
Dedicated
Shared
BB_Credit Buffers Per Port
Dedicated Rate Mode
4-Gbps Speed
1
ISL
250
250
4509
BB_Credit Buffers Per Port
Dedicated Rate Mode
4-Gbps Speed
ISL
250
250
145
5 6
1-Gbps 1-Gbps
Shared
Shared
Shared Rate Mode
4-Gbps Speed
1
Fx Port ISL
16 16
250 16
1
Fx Port
16
16
12
OL-18084-01, Cisco MDS NX-OS Release 4.x
Fx Port
16
16