Displaying Bb_Credit Information - Cisco MDS 9000 Series Configuration Manual

Chapter 4 Configuring Interface Buffers
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
To configure the receive data field size, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc1/1
switch(config-if)#
Step 3
switch(config-if)# switchport fcrxbufsize 2000

Displaying BB_Credit Information

To display the BB_credit information, use the show interface bbcredit command (see
Example
Example 4-1
switch# show interface bbcredit
fc2/1 is down (SFP not present)
...
fc2/17 is trunking
fc2/18 is down (SFP not present)
fc2/19 is down (SFP not present)
fc2/20 is down (SFP not present)
fc2/21 is down (Link failure or not-connected)
...
fc2/31 is up
fc2/32 is down (Link failure or not-connected)
Example 4-2
switch# show interface fc2/31 bbcredit
fc2/31 is up
OL-19445-02, Cisco MDS NX-OS Release 4.2(x)
4-2).
Displays BB_credit Information
Transmit B2B Credit is 255
Receive B2B Credit is 12
Receive B2B Credit performance buffers is 375
12 receive B2B credit remaining
255 transmit B2B credit remaining
Transmit B2B Credit is 0
Receive B2B Credit is 12
Receive B2B Credit performance buffers is 48
12 receive B2B credit remaining
0 transmit B2B credit remaining
Displays BB_credit Information for a Specified Fibre Channel Interface
Transmit B2B Credit is 0
Receive B2B Credit is 12
Receive B2B Credit performance buffers is 48
12 receive B2B credit remaining
0 transmit B2B credit remaining
Purpose
Enters configuration mode.
Selects a Fibre Channel interface and enters
interface configuration submode.
Reduces the data field size for the selected
interface to 2000 bytes. The default is 2112
bytes and the range is from 256 to 2112 bytes.
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
Displaying BB_Credit Information
Example 4-1
4-21
and