Cisco MDS 9000 Series Configuration Manual page 156

About PortChannels
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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When configuring the host-optimized ports on Generation 1 hardware, the following PortChannel
guidelines apply:
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F and TF PortChannel Restrictions
The following guidelines and restrictions are applicable for F and TF PortChannels:
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Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
6-8
The MDS 9140 and 9120 switches
If you execute the write erase command on a 32-port switching module, and then copy a saved
configuration to the switch from a text file that contains the no system default switchport
shutdown command, you need to copy the text file to the switch again for the E ports to come up
without manual configuration.
The host-optimized ports in the Cisco MDS 9100 Series are subject to the same PortChannel rules
as 32-port switching modules; only the first port of each group of 4 ports is included in a
PortChannel.
You can configure only the first port in each 4-port group as an E port (for example, the first
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port in ports 1–4, the fifth port in ports 5–8, and so on). If the first port in the group is configured
as a PortChannel, the other three ports in each group (ports 2–4, 6–8, and so on) are not usable
and remain in the shutdown state.
– If any of the other three ports are configured in a no shutdown state, you cannot configure the
first port to be a PortChannel. The other three ports continue to remain in a no shutdown state.
The ports must be in F mode.
ON mode is not supported. Only ACTIVE-ACTIVE mode is supported. By default, the mode is
ACTIVE on the NPV switches.
Devices logged in through F PortChannel on an MDS switch are not supported in IVR non-NAT
configuration. The devices are supported only in IVR NAT configuration.
Port security rules are enforced only on physical PWWNs at the single link level.
FC-SP authenticates only the first physical FLOGI of every PortChannel member.
Since the FLOGI payload carries only the VF bits to trigger the use of a protocol after the FLOGI
exchange, those bits will be overridden. In the case of the NPV switches with core Cisco switch,
PCP protocol will be initiated.
The name server registration of the N ports logging in through an F PortChannel will use the FWWN
of the PortChannel interface.
The PortChannel port VSAN cannot be configured using DPVM.
Chapter 6 Configuring PortChannels
OL-19445-02, Cisco MDS NX-OS Release 4.2(x)