3Com 4500 PWR 26-Port Configuration Manual page 578

The number of the existing devices in the fabric does not reach the maximum number of devices
allowed by the fabric (up to eight devices can form a fabric).
The fabric name of the device and the existing devices in the fabric are the same.
The software version of the device is the same as that of the existing devices in the fabric.
The device passes the security authentication if security authentication is enabled on the device or
in the fabric, that is, the same authentication mode and password are configured on the device and
the existing devices in the fabric.
XRN fabric detection
Forming a fabric requires a high consistency of connection modes between the devices and device
information. Without all the requirements for forming a fabric being met, a fabric cannot be formed.
The FTM program detects the necessary conditions for forming a fabric one by one and displays the
detection results. You can use the display ftm information command to view the detection information
for the fabric, checking the running status of the fabric or analyzing the problems.
status and solution of the problems.
Table 47-1 Status and solution
Status
normal
temporary
redundance port
connection error
reached max units
different system name
different product
version
Analysis
—
Two fabric ports of the
same device (that is, the
right port and the left port)
are connected.
The left and right fabric
Indicates
ports of the devices are
three kinds
not connected in a
of port
crossed way.
matching
errors may
A fabric port of the local
occur.
switch is connected to a
non-fabric port, or is
connected to a fabric port
that does not have fabric
port function enabled.
The maximum number of units allowed
by the current fabric is reached. You will
fail to add new devices to the fabric in
this case.
The fabric name of the device directly
connected to the switch and the existing
fabric name of the fabric are not the
same.
The software version of the directly
connected device and that of the current
device are not the same.
47-4
Table 47-1
Solution
These three kinds of
information do not mean a
device or a fabric operates
improperly. No measure is
needed for any of them.
Pull out one end of the cable
and connect it to a fabric port of
another switch.
Connect the left and right ports
of two devices in a crossed
way.
Check the types of the two
interconnected ports on two
sides. Make sure a fabric port is
only connected to ports of the
same type and the fabric ports
on both sides are enabled with
the fabric port function.
Remove the new device or
existing devices in the fabric.
Modify the fabric name of the
new device to be that of the
fabric.
Update the software version to
make sure the software version
of the new device is the same
as that of the fabric.
lists the