Cisco Systems DSC9148D8G48PK9 Generation 1 PortChannel Limitations, TF PortChannel Limitations

Chapter 6 Configuring PortChannels

Guidelines and Limitations

Generation 1 PortChannel Limitations

This section includes the restrictions on creation and addition of PortChannel members to a PortChannel on Generation 1 hardware:

•The 32-port 2-Gbps or 1-Gbps switching module.

•The MDS 9140 and 9120 switches.

When configuring the host-optimized ports on Generation 1 hardware, the following PortChannel guidelines apply:

•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.

•Any (or all) full line rate port(s) in the Cisco MDS 9100 Series can be included in a PortChannel.

•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 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.

F and TF PortChannel Limitations

The following guidelines and restrictions are applicable for F and TF PortChannels:

•The ports must be in F mode.

•Automatic creation is not supported.

•The PortChannel interface must be in ACTIVE mode when multiple FCIP interfaces are grouped with WA.

•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, the core has a Cisco WWN and will try to initiate the PCP protocol.

•The name server registration of the N ports logging in through an F PortChannel will use the fWWN of the PortChannel interface.

•DPVM configuration is not supported.

•The PortChannel port VSAN cannot be configured using DPVM.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
6-14	OL-29284-01, Release 6.x