H3C Technologies H3C S3600 Series Switches - Manual (Page 798)

1-9
z Establishing an IRF system requires a high consistency of the configuration of each device. Hence,
before you enable the fabric port, do not perform any configuration for the port, and do not
configure some functions that affect the IRF for other ports or globally. Otherwise, you cannot
enable the fabric port. For detailed restrictions refer to the error information output by devices.
z After an IRF fabric is created, you are not recommended to enable the Burst function on any fabric
device. For the introduction to the Burst function, refer to the QoS-QoS Profile part in this manual.
z When you have enabled fabric port function for a fabric port group, if you need to change the fabric
port group, you must disable the fabric function of the current fabric port group before you configure
another group. Otherwise, the system will prompt that the current fabric port group is in use, you
cannot change the fabric port group.
z As shutting down a fabric port directly may cause the fabric to be split and error messages, do not
perform such operations.
z To split a fabric, you can simply remove the cables used to form the fabric or disable the fabric
using the undo fabric-port enable command.
z You can shut down/bring up a port after you disable the fabric feature on the port.
z If you need to configure an IRF fabric as a DHCP server, DHCP relay or DHCP client, configure the
UDP Helper function in the fabric at the same time to ensure that the client can successfully obtain
an IP address. For the configuration of the UDP Helper function, refer to the UDP Helper part in this
manual.
z After you use the port link-type irf-fabric command to specify a port as the fabric port, you cannot
use the port link-type command to change the port to a port of other types. You must use the
undo fabric-port command first to disable the fabric port function of the port to change the port
type.
Specifying the VLAN Used to Form an IRF Fabric
When the devices in an IRF fabric are transmitting IRF data, to avoid it being sent to other non fabric
ports, the data should be transmitted in a specified VLAN. You can specify the VLAN used to transmit
IRF data.
Follow these steps to specify the VLAN used to form an IRF fabric:
To do… Use the command… Remarks
Enter system view system-view —
Specify the VLAN used to form
an IRF fabric
ftm fabric-vlan vlan-id
Required
By default, the VLAN used to form
the IRF fabric is VLAN 4093