Ethernet Link Aggregation Troubleshooting - 3Com 7700 Configuration Manual

36 C 2: P C
HAPTER ORT ONFIGURATION
Ethernet Link
Aggregation
Troubleshooting
Trunk port allows frames from several VLANs to pass through, the heavy traffic
needs balancing among all the ports.
Ethernet Switch (Switch A) is connected to the Ethernet Switch (Switch B)
upstream by the aggregation of three ports, Ethernet1/0/1 through Ethernet1/0/3.
Figure 2 Configure Link Aggregation
Link Aggregation
Switch A
The following configurations are for Switch A. Configure Switch B the same way.
1 Aggregate Ethernet1/0/1 through Ethernet1/0/3.
[SW7700] link-aggregation ethernet1/0/1 to ethernet1/0/3 both
2 Display the information of the link aggregation.
[SW7700] display link-aggregation ethernet1/0/1
Master port: Ethernet1/0/1
Other sub-ports:
Ethernet1/0/2
Ethernet1/0/3
Mode: both
When configuring link aggregation, you might see a message that the
configuration has failed. To address this situation:
Check the input parameter and see whether the starting number of Ethernet
■
port is smaller than the end number. If yes, take the next step.
Check whether the Ethernet ports that are in the configured range belong to
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any other existing link aggregations. If not, take the next step.
Check whether the ports to be aggregated operate in the same speed and full
■
duplex mode. If yes, take the next step.
If correct, configure the link aggregation again.
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Switch B
Switch C