Cisco AP775A - Nexus Converged Network Switch 5010 User Manual

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22-20
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-17256-03, Cisco MDS NX-OS Release 4.x
Chapter 22 Configuring Generation 2 and Generation 3 Switching Modules
Buffer Credit Allocation
The following considerations apply to BB_credit buffers on18-port 4-Gbps Fibre Channel switching
modules:
• 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.
12-Port 4-Gbps Switching Module BB_Credit Buffers
Table 22-14 lists the BB_credit buffer allocation for 12-port 4-Gbps switching modules.
The following considerations apply to BB_credit buffers on 12-port 4-Gbps switching modules:
• 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.
Table 22-13 18-Port 4-Gbps Multiservice Module BB_Credit Buffer Allocation
BB_Credit Buffer Allocation
BB_Credit Buffers Per Port
Dedicated Rate Mode
4-Gbps Speed
Shared Rate Mode
4-Gbps Speed
ISL
1
1. ISL = E port or TE port.
Fx Port ISL
1
Fx Port
Defualt BB_credit buffers 250 16 16 16
Maximum BB_credit buffers 250 250 16 16
Total number of BB_credit buffers per module 4509
Table 22-14 12-Port 4-Gbps Switching Module BB_Credit Buffer Allocation
BB_Credit Buffer Allocation Type
BB_Credit Buffers Per Port
Dedicated Rate Mode
4-Gbps Speed
ISL
1
1. ISL = E port or TE port.
Fx Port
Default BB_credit buffers 250 16
Maximum BB_credit buffers 250 16
Default Performance buffers 145 12
Total number of BB_credit buffers per module 5488
Total number of performance buffers per module 512 (shared)

Cisco AP775A - Nexus Converged Network Switch 5010 Specifications

General

Brand	Cisco
Model	AP775A - Nexus Converged Network Switch 5010
Category	Switch
Language	English