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
5-12
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 5 Troubleshooting Mixed Generation Hardware
Generation 1 and Generation 2 Issues
Verifying Bandwidth Utilization in a Port Group Using the CLI
To verify bandwidth utilization in a port group using the CLI, follow these steps:
Step 1
Use the
show port-resources module
command to display the Generation 2 module shared resources
configuration.
switch#
show port-resources module 2
Module 2
Available dedicated buffers are 5164
Port-Group 1
Total bandwidth is
12.8 Gbps
Total shared bandwidth is
4.8
Gbps
Allocated dedicated bandwidth is 8.0 Gbps
--------------------------------------------------------------------
Interfaces in the Port-Group B2B Credit Bandwidth Rate Mode
Buffers (Gbps)
--------------------------------------------------------------------
fc2/1 16 4.0 shared
fc2/2 16 4.0 shared
fc2/3 16 4.0 shared
fc2/4 16 4.0 shared
fc2/5 16 4.0 dedicated
fc2/6 16 4.0 dedicated
...
In this example, there is not enough available shared bandwidth in Port-Group 1 to switch any more ports
to 4 Gbps dedicated mode.
Step 2
Do one of the following to free bandwidth for the port that you want to place in dedicated mode.
a.
Use the
out-of-service
command in interface mode to put one or more ports in out- of-service mode
to free more resources.
b.
Use the
swtichport speed
command on one or more ports to change the port speed to a lower port
speed. See the
“Dynamic Bandwidth Management” section on page 5-3
for the minimum bandwidth
requirements for port rate modes and port speeds.
