10
Views
System view
Predefined user roles
network-admin
Parameters
domain-id
: Specifies a domain ID for the IRF fabric. The value range is 0 to 4294967295.
Usage guidelines
One IRF fabric forms one IRF domain. IRF uses IRF domain IDs to uniquely identify IRF fabrics and
prevent IRF fabrics from interfering with one another.
If one IRF fabric uses another IRF fabric as the intermediate device for LACP MAD, ARP MAD, or ND
MAD, you must assign the two IRF fabrics different domain IDs for correct split detection. False
detection causes IRF split.
An IRF fabric has only one IRF domain ID. You can change the IRF domain ID by using the following
commands:
irf domain
,
mad enable
,
mad arp enable
, or
mad nd enable
. The IRF domain IDs
configured by using these commands overwrite each other.
Examples
# Set the IRF domain ID to 10.
<Sysname> system-view
[Sysname] irf domain 10
irf link-delay
Use
irf link-delay
to set a delay for the IRF ports to report a link down event.
Use
undo irf link-delay
to restore the default.
Syntax
irf link-delay interval
undo irf link-delay
Default
The IRF link down report delay is 4 seconds.
Views
System view
Predefined user roles
network-admin
Parameters
interval
: Sets the IRF link down report delay in the range of 0 to 10000 milliseconds. If the interval is
set to 0, link down events are reported without any delay.
Usage guidelines
An IRF link down report delay helps avoid link flapping. Link flapping causes frequent IRF splits and
merges during a short time.
An IRF port handles link down and link up events as follows:
•
When the IRF link changes from up to down, the port does not immediately report the change to
the IRF fabric. If the IRF link state is still down when the delay time is reached, the port reports
the change to the IRF fabric.
