Portchannels - Cisco MDS 9000 Series Configuration Manual

Chapter 3 Configuring Fibre Channel Interfaces
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
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* this terminal session
The running configuration is updated when modules are installed. If you save the running configuration
to the startup configuration (using the copy running-config startup-config command), during reboot
the switch powers up the same set of modules as before the reboot regardless of the sequence in which
the modules initialize. You can use the show port index-allocation startup command to display the
index allocation the switch uses at startup.
switch# show port index-allocation startup
Startup module index distribution:
------------------------------------------------------+
Slot | Allowed |
-----|---------|-------|------------------------------|
1
2
3
4
SUP
The output of the show port index-allocation startup command does not display anything in the
Note
Allowed range column because the command extracts the indices from the persistent storage service
(PSS) and displaying an allowed range for startup indices is meaningless.
If a module fails to power up, you can use the show module slot recovery-steps command to display
the reason. For information on recovering a module powered-down because port indexes are not
available, refer to the Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x.
Whenever using mixed Generation 1 and Generation 2 modules, power up the Generation 1 modules
Tip
first. During a reboot of the entire switch, the Generation 1 modules power up first (default behavior).

PortChannels

PortChannels have the following restrictions:
•
•
•
The number of PortChannels allowed does not depend on the type of supervisor module. However,
Note
Generation 3 modules require the Supervisor 2 module on the MDS 9506 and 9509 switches.
OL-19445-02, Cisco MDS NX-OS Release 4.2(x)
00-0b-be-f7-4c-24 to 00-0b-be-f7-4c-28
00-05-30-01-a8-b2 to 00-05-30-01-a8-b6
00-05-30-01-aa-7e to 00-05-30-01-aa-82
Alloted indices info
| range | Total |
| ----- | 34 | 0-31,80-81
| ----- | 32 | 32-63
| ----- | 16 | 64-79
| ----- | 48 | 96-127,224-239
| 253-255 | 3 | 253-255
The maximum number of PortChannels allowed is 256 if all switching modules are Generation 2 or
Generation 3, or both.
The maximum number of PortChannels allowed is 128 whenever there is a Generation 1 switching
module in use with a Generation 2 or Generation 3 switching module.
Ports need to be configured in dedicated rate mode on the Generation 2 and Generation 3 switching
module interfaces to be used in the PortChannel.
Combining Generation 1, Generation 2, and Generation 3 Modules
JAB07030723
JAB090401AA
JAB091100TF
|
Index values |
|
|
|(Slot 1 shares 80-81)
|
|
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
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