Brocade FastIron Ethernet Switch Stacking Configuration Guide - Manual (Page 141)

2/1| 1 |2/6==2/1| 2 |2/6
+---+ +---+
active standby
--- +---+ ---
( 1 )3/1--2/1| 6 |2/3--3/1( 2 )
--- +---+ ---
active standby
--- +---+ ---
( 1 )3/3--2/1| 4 |2/3--3/3( 2 )
--- +---+ ---
active standby
--- +---+ ---
( 1 )3/4--2/1| 3 |2/3--3/4( 2 )
--- +---+ ---
active standby
--- +---+ ---
( 1 )3/2--2/1| 5 |2/3--3/2( 2 )
--- +---+
---
Standby u2 - protocols ready, can failover or manually switch over
Current stack management MAC is 748e.f834.1f08
Configuring advanced mixed stacking
Specifying a TFTP server for Autocopy
All devices in a mixed stack must run the same version of the software image. If they run different major
or minor versions, an image mismatch occurs.
If they run different minor versions, the active controller uses the Autocopy mechanism to copy an
image from another device to the device that has the image mismatch. Autocopy does not work if
mismatched devices run different major versions because stacking communication is blocked.
Autocopy is enabled by default.
To avoid image mismatch issues in a mixed stack, set up a TFTP server for Autocopy before
configuring a stack.
Brocade(config)# tftp-server 10.1.2.1 image-location /server/builds/
How Autocopy works
In the case of an ICX 6610 minor image version mismatch, the active controller copies its own image to
the mismatched ICX 6610 device. In the case of an ICX 6450 minor image version mismatch, the active
controller copies an image from another peripheral device that runs the correct image.
In some cases, Autocopy must retrieve the image from a TFTP server (if there is only one ICX 6450
device or if all of the ICX 6450 devices are in mismatch with the backbone). If you have not configured a
TFTP server for Autocopy, the system prompts you to configure a TFTP server where an image for an
ICX 6450 device can be downloaded.
If the TFTP server has the correct image and Autocopy has not been disabled, the image is
downloaded to the mismatched device. When the image copy is complete, a reboot for the mismatched
devices is issued. All mismatched devices are rebooted at the same time.
Configuring advanced mixed stacking
FastIron Ethernet Switch Stacking Configuration Guide 139
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