Enabling Link-Aggregation Traffic Redirection; Configuration Restrictions And Guidelines - H3C S7500E-X Configuration Manual

Figure 8 Load sharing for multidevice link aggregation in an IRF fabric
Any Selected ports on the
ingress device?
Packets are load-shared only
across the Selected ports on the
ingress device
To enable local-first load sharing for link aggregation:
Step
Enter system view.
1.
Enable local-first load
2.
sharing for link aggregation.

Enabling link-aggregation traffic redirection

Link-aggregation traffic redirection prevents traffic interruption.
When you restart a card that contains Selected ports, this feature redirects traffic of the card to other
cards. (In standalone mode.)
When you restart an IRF member device or its card that contains Selected ports, this feature
redirects traffic of the IRF member device or card to other IRF member devices or other cards. (In
IRF mode.)

Configuration restrictions and guidelines

When you enable link-aggregation traffic redirection, follow these restrictions and guidelines:
•
Link-aggregation traffic redirection applies only to dynamic link aggregation groups.
•
To prevent traffic interruption, enable link-aggregation traffic redirection on devices at both ends
of the aggregate link.
•
To prevent packet loss that might occur at a reboot, do not enable spanning tree together with
link-aggregation traffic redirection.
•
Link-aggregation traffic redirection does not operate correctly on an edge aggregate interface.
The egress port for a traffic flow is an
aggregate interface that has Selected
ports on different IRF member devices
Yes
Local-first load sharing
mechanism enabled?
No
Yes
Command
system-view
link-aggregation load-sharing
mode local-first
No
Packets are load-shared across
all Selected ports
39
Remarks
N/A
By default, local-first load sharing
for link aggregation is enabled.