Riverstone Networks WICT1-12 6.3 CONFIGURING THE LINK AGGREGATION CONTROL PROTOCOL (LACP)

Riverstone Networks RS Switch Router User Guide Release 8.0 6-5
SmartTRUNK Configuration Guide Configuring the Link Aggregation Control Protocol (LACP)
6.3 CONFIGURING THE LINK AGGREGATION
CONTROL PROTOCOL (LACP)
You can configure Riverstone’s SmartTRUNK to support the 802.3ad Link Aggregation Control Protocol (LACP).
When you do so, the SmartTRUNK is treated as the aggregator. As an aggregator, the SmartTRUNK presents a
standard IEEE 802.3 service interface and communicates with the MAC client. The aggregator binds to one or more
ports, is responsible for distributing frames from a MAC client to its attached ports, and for collecting received frames
from the ports and passing them to the MAC client transparently.
You can enable LACP on all 10/100 Ethernet and Gigabit Ethernet ports on the RS. LACP ports exchange LACP PDUs
with their peers and form one or more Link Aggregation Groups (LAGs). After joining a LAG, the port attaches to an
appropriate aggregator (SmartTRUNK). However, for a port to attach to an aggregator, the following parameters must
match between the port and the aggregator:
•Port’s port-key must equal the aggregator’s actor-key
•aggregator’s partner-key must equal the port’s partner-key
•aggregator’s port-type must equal the port’s port-type (10/100 or Gigabit Ethernet)
•aggregator’s aggregation must equal the port’s aggregation (aggregatable or individual)
•If specified by the user, the aggregator’s partner-system-priority and partner-system-id
(MAC) must equal the port’s partner-system-priority and partner-system-id (MAC).
Note All ports on which LACP is enabled are devoted solely to LACP. All ports
controlled by any aggregator must have the same bandwidth.
6.3.1 Configuring SmartTRUNKs for LACP
Note For a complete description of all parameters associated with the following LACP
commands, see the Riverstone Networks Command Line Interface Reference
Manual.
1. Create a SmartTRUNK and specify the LACP control protocol.:
2. Enable the LACP protocol on the SmartTRUNK’s ports and specify a port key number using the
lacp set port command. Here is an example:
rs(config)#smarttrunk create st.1 protocol LACP
rs(config)#lacp set port gi.1.1,gi.2.1 enable port-key 10