Buffer-To-Buffer Credit Buffers For Fabric Switches; Cisco Mds 9396S Fabric Switch Buffer-To-Buffer Credit Buffers - Cisco MDS 9000 Series Configuration Manual

Buffer-to-Buffer Credit Buffers for Fabric Switches

Extended
Buffer-to-Buffer
Credit Buffer
Allocation
Maximum extended
buffer-to-buffer
credit buffers
Note
The DS-X9448-768K9 module is a 16 Gbps line-rate module.
The following guidelines apply to buffer-to-buffer credit buffers on the 48-port 16-Gbps Fibre Channel
switching modules:
• Buffer-to-buffer credit buffers for ISL connections can be configured from a minimum of 2 buffers to a
• Buffer-to-buffer credit buffers for Fx port mode connections can be configured from a minimum of 1
• If you have installed an enterprise license, per port credits in a port group can be increased up to 2650
• If you have installed an enterprise license, per port credits in a port group can be increased up to 4144
• If you configure any port to the fixed 4 Gbps or 8 Gbps speed, the port consumes one extra buffer from
Note In Cisco MDS 9700 Series Switches module, each port group comprises of 4 ports, and there are 12 port
groups per ASIC. Port group buffers can be allocated to any combination of ports in that port group using
extended buffer configuration. Refer to the show port-resource module module_number command for details
about buffers supported by port-groups.
Buffer-to-Buffer Credit Buffers for Fabric Switches
This section describes how buffer credits are allocated to Cisco MDS 9000 Fabric switches.

Cisco MDS 9396S Fabric Switch Buffer-to-Buffer Credit Buffers

Table 16: 96-Port 16-Gbps Switch Buffer-to-Buffer Credit Buffer Allocation, on page 113
buffer-to-buffer credit buffer allocation for the 96-port 16-Gbps Fibre Channel switch.
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
112
Extended Buffer-to-Buffer Credit Buffers Per Port
Dedicated Rate Mode 2-Gbps to 16-Gbps Speed
ISL
2150
maximum of 500 buffers.
buffers to a maximum of 500 buffers.
using extended buffer to buffer credits.
using extended buffer to buffer credits when ports are moved to minimum credits. However, the cli
restricts the per port credits to be increased to only 4095.
the buffer pool.
Configuring Interface Buffers
Fx Port
2150
lists the