Cisco 15327 - Manual (Page 155)

10-7
Ethernet Card Software Feature and Configuration Guide, R7.2
Chapter 10 Configuring Link Aggregation
Understanding Encapsulation over EtherChannel or POS Channel
pos flag c2 1
!
interface POS1
no ip address
channel-group 1
crc 32
pos flag c2 1
Understanding Encapsulation over EtherChannel or POS
Channel
When configuring encapsulation over FEC, GEC, or POS, be sure to configure IEEE 802.1Q on the
port-channel interface, not its member ports. However, certain attributes of port channel, such as duplex
mode, need to be configured at the member port levels. Also make sure that you do not apply
protocol-level configuration (such as an IP address or a bridge group assignment) to the member
interfaces. All protocol-level configuration should be on the port channel or on its subinterface. You
must configure IEEE 802.1Q encapsulation on the partner system of the EtherChannel as well.
Configuring Encapsulation over EtherChannel or POS Channel
To configure encapsulation over the EtherChannel or POS channel, perform the following procedure,
beginning in global configuration mode:
Encapsulation over EtherChannel Example
Figure 10-3 shows an example of encapsulation over EtherChannel. The associated code is provided in
Example 10-5 (Switch A) and Example 10-6 (Switch B).
Command Purpose
Step 1 Router(config)# interface port-channel
channel-number.subinterface-number
Configures the subinterface on the created port
channel.
Step 2 Router(config-subif)# encapsulation dot1q
vlan-id
Assigns the IEEE 802.1Q encapsulation to the
subinterface.
Step 3 Router(config-subif)# bridge-group
bridge-group-number
Assigns the subinterface to a bridge group.
Step 4 Router(config-subif)# end Exits to privileged EXEC mode.
Note Optionally, you can remain in interface
configuration mode and enable other
supported interface commands to meet
your requirements.
Step 5 Router# copy running-config startup-config (Optional) Saves the configuration changes to
NVRAM.