H3C Technologies H3C S5560 Series Switches - Manual (Page 72)

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Step Command Remarks
2. Enter
Layer 3
aggregat
e
interface
view.
interface route-aggregation
interface-number
N/A
3. Set the
MTU for
the Layer
3
aggregat
e
interface.
mtu size The default setting is 1500 bytes.
Setting the minimum and maximum numbers of Selected ports
for an aggregation group
IMPORTANT:
The minimum and maximum numbers of Selected ports must be the same for the local and peer
aggregation groups.
The bandwidth of an aggregate link increases as the number of Selected member ports increases. To
avoid congestion, you can set the minimum number of Selected ports required for bringing up an
aggregate interface.
This minimum threshold setting affects the aggregation state of both aggregation member ports and the
aggregate interface.
• When the number of member ports eligible to be Selected ports is smaller than the minimum
threshold:
{
All member ports are placed in Unselected state.
{
The link of the aggregate interface goes down.
• When the minimum threshold is reached, the eligible member ports are placed in the Selected state,
and the link of the aggregate interface goes up.
The maximum number of Selected ports allowed in an aggregation group is limited by either manual
configuration or hardware limitation, whichever value is smaller.
You can implement backup between two ports by performing the following tasks:
• Assigning two ports to an aggregation group.
• Setting the maximum number of Selected ports to 1 for the aggregation group.
Then, only one Selected port is allowed in the aggregation group, and the Unselected port acts as a
backup port.
To set the minimum and maximum numbers of Selected ports for an aggregation group:
Step Command Remarks
1. Enter system view. system-view N/A