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Transmission speed between
ports
Duplex mode
Legend:
--: Not applicable
#
A line that is slower than the maximum speed of link-up lines.
14.1.4 MAC address of the channel group
A protocol such as the Spanning Tree Protocol requires the MAC address of a channel
group. For the Switch, the MAC address of any of the ports in the channel group is used.
If the port whose MAC address is used is removed from the channel group, the MAC
address of the group changes.
14.1.5 Port allocation for sending frames
When link aggregation is used to send frames, to ensure efficient port use, a port is
allocated for each frame to distribute the traffic to ports. Ports are allocated based on the
information in the frames.
The following table shows the information used for port allocation.
Table 14-2 Port allocation for sending frames
Forward
Layer 2
forwarding
14.1.6 Notes on using link aggregation
(1) Configurations in which link aggregation is not possible
To use link aggregation, the settings of the connected devices must match. The following
figure shows configurations in which link aggregation is not possible.
Supported specifications
Only the same speed is used.
Only full-duplex mode is
supported.
Frame type
Frame for which the MAC
address has not been learned
yet
(Broadcasts and multicasts
are included.)
IP frame for which the MAC
address has been learned
Non-IP frame for which the
MAC address has been
learned
Remarks
A slow line
--
Information used for port allocation
Destination MAC address
Source MAC address
Reception port number or reception channel group
number
Destination IP address
Source IP address
Destination TCP/UDP port number
Source TCP/UDP port number
Destination MAC address
Source MAC address
Reception VLAN
EtherType
14 Link Aggregation
#
is detached.
217
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