5-7
Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
OL-29284-01, Release 6.x
Chapter 5 Configuring Trunking
Guidelines and Limitations
Figure 5-4 Operational and Allowed VSAN Configuration
Guidelines and Limitations
Trunking has the following configuration guidelines and limitations:
• General Guidelines and Limitations, page 5-7
• Upgrade and Downgrade Limitations, page 5-8
• Difference Between TE Ports and TF-TNP Ports, page 5-8
• Trunking Misconfiguration Examples, page 5-10
General Guidelines and Limitations
The trunking feature has the following general configuration guidelines and limitations:
• F ports support trunking in Fx mode.
• The trunk-allowed VSANs configured for TE, TF, and TNP links are used by the trunking protocol
to determine the allowed active VSANs in which frames can be received or transmitted.
• If a trunking enabled E port is connected to a third-party switch, the trunking protocol ensures
seamless operation as an E port.
• Trunking F ports and trunking F PortChannels are not supported on the following hardware:
–
91x4 switches, if NPIV is enabled and used as the NPIV core switch.
–
Generation 1 2-Gbps Fibre Channel switching modules.
• On core switches, the FC-SP authentication will be supported only for the physical FLOGI from the
physical pWWN.
V
SANs
1 and 3 are on th
e
allowe
d
l
is
t
.
V
SA
N
s
1 and 3 are operatio
nal
.
V
SA
Ns
1
, 2, 5 are o
p
era
tion
al
.
V
SA
Ns
1,
2, 5 are o
n
the all
o
we
d
list.
VSANs 1 and 2 are operational.
VSANs 1 and 2 are on the allowed list.
Switch 3
VSAN1
VSAN2
VSAN4
VSAN5
Switch 1
VSAN1
VSAN2
VSAN3
VSAN4
VSAN5
Switch 2
VSAN1
VSAN2
VSAN3
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