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it's a member of a Port-channel. However this configuration is only actually applied when the port leaves
the Port-channel.
The Port-channel interface can be a member of a VLAN complying with IEEE 802.1Q.
3.3.4.2. STP
Spanning tree does not maintain state for members of a Port-channel, but the Spanning Tree does maintain
state for the Port-channel interface. As far as STP is concerned, members of a Port-channel do not exist.
(Internally, the STP state of the Port-channel interface is replicated for the member links.)
When members are deleted from a Port-channel they become normal links, and spanning tree maintains
their state information.
3.3.4.3. Statistics
Statistics are maintained for all Port-channel interfaces as they are done for the physical ports, besides
statistics maintained for individual members as per the 802.3ad MIB statistics.
3.3.5. Port-channel Configuration Guidelines
Ports to be aggregated must be configured so that they are compatible with the Port-channel feature and
with the partner switch to which they connect.
Ports to be added to a Port-channel must meet the following requirements:
ï‚·
Interface must be a physical Ethernet link.
ï‚·
Each member of the Port-channel must be running at the same speed and must be in full
duplex mode.
ï‚·
The port cannot be a mirrored port
The following are the interface restrictions
ï‚·
The configured speed of a Port-channel member cannot be changed.
ï‚·
An interface can be a member of only one Port-channel.
3.3.5.1. Port-channel Configuration Examples
This section contains the following examples:
ï‚·
Configuring Dynamic Port-channels
ï‚·
Configuring Static Port-channels
Note: The examples in this section show the configuration of only one switch. Because Port-channels
involve physical links between two switches, the Port-channel settings and member ports must be
configured on both switches.
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