Setting The Irf Link Down Report Delay; Configuring Mad - HPE FlexNetwork HSR6800 Configuration Manual

Step
1. Enter system view.
2. Enable software
auto-update.

Setting the IRF link down report delay

You can avoid link flapping causing frequent IRF splits and merges during a short time by configuring
the IRF ports to delay reporting link down events. An IRF port thus works 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.
•
When the IRF link changes from down to up, the link layer immediately reports the event to the
IRF fabric.
To set the IRF link down report delay:
Step
1. Enter system view.
2. Set the IRF link down
report delay.

Configuring MAD

The following MAD mechanisms are available for detecting multi-active collisions in different network
scenarios:
•
LACP MAD
•
BFD MAD
•
ARP MAD
These MAD mechanisms operate independently. You can configure all of them for an IRF fabric.
Table 1 provides a reference for you to make a MAD mechanism selection decision.
Table 1 A comparison of the MAD mechanisms
MAD
mechanism
LACP MAD
Command
system-view
irf auto-update enable
Command
system-view
irf link-delay interval
Advantages
•
Detection speed is fast.
•
Requires no
MAD-dedicated physical
ports or interfaces.
Remarks
N/A
The default IRF link down report delay is 0
milliseconds.
Recommended value range is 200 to 2000
milliseconds. The greater the interval, the
slower the service recovery.
Disadvantages
Requires an HPE device
that supports LACP MAD
packets as the intermediate
device.
22
Remarks
N/A
By default, this function is
disabled.
Application scenario
Link aggregation is used
between the IRF fabric
and its upstream or
downstream device.
For information about
LACP, see Layer
2—LAN Switching
Configuration Guide.