10-12
Cisco ONS 15454 and Cisco ONS 15454 SDH Ethernet Card Software Feature and Configuration Guide, R8.0
Chapter 10 Configuring Link Aggregation
Configuring LACP
transparent mode is that the network bandwidth is not wasted. However. the disadvantage is that there is
no card protection between the CPE and UNI (ONS 15454) because all the links in the ML card bundle
belong to the same card.
Figure 10-4 LACP Termination Mode Example
Transparent Mode Scenario
In Figure 10-5, the link aggregation bundle originates at router 1 and terminates at router 2. Transparent
mode is enabled when the LACP packets are transmitted without any processing on a card. While
functioning in this mode, the CE-100T-8 cards pass through LACP packets transparently so that the two
CPE devices perform the link aggregation. To operate in this mode, no LACP configuration is required
on the CE-100T-8 cards.
Figure 10-5 LACP Transparent Mode Example
Configuring LACP
To configure LACP over the EtherChannel, perform the following procedure, beginning in global
configuration mode:
Configure and set the LACP port’s priority. This configuration is optional.
159489
CPE: Router 1
UNI: 15454 A
SONET Network
CPE: Router 2
UNI: 15454 B
159488
CPE: Router 1
UNI: 15454 A
SONET Network
CPE: Router 2
UNI: 15454 B
Command Purpose
Step 1
Router(config)# int port
<interface-number>
Creates the port channel interface.
Step 2
Router(config-if)# int fa
<facility-number>
Access the facility number on the port.
Step 3
Router(config-if)# channel-group <
channel-number
> mode ?
Queries the current mode of the channel
group - active and passive.
Step 4
Router(config-if)# channel-group <
channel-number
> mode active
Places the channel group in active mode.
Step 1
Router(config-if)# exit
Exits the channel group configuration.
Step 2
Router(config-if)# int fa <
facility-number
>
Accesses the facility.
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