Riverstone Networks RS Switch Router User Guide Release 8.0 6-3
SmartTRUNK Configuration Guide
SmartTRUNK Example Configuration
6.1.3
Specifying Traffic Load Policy
The default policy for assigning flows on the ports of a SmartTRUNK is “link-utilization,” where flows are assigned
to the least-used ports in the SmartTRUNK. The other policy for assigning flows to ports is “round-robin,” where flows
are assigned to ports on a sequential basis.
The traffic distribution policy only affects the initial assignment of L2 and L3 flows to a given port. If a link in the
SmartTRUNK goes down, the flows are remapped to a different port in the same SmartTRUNK. If the flows assigned
to a particular port in the SmartTRUNK exceed the bandwidth of the port, packets are dropped even if there is
bandwidth available on other ports in the SmartTRUNK, unless SmartTRUNK Load Redistribution (SLR) is used. See
Section 6.4,
"SmartTRUNK Load Redistribution"
for information about configuring SLR.
6.2
SMARTTRUNK EXAMPLE CONFIGURATION
Figure 6-1
shows a network design based on SmartTRUNKs. R1 is an RS operating as a router, while R2 and R3 are
RSs operating as switches.
Timesaver
To view the configuration of any device in the example below, click on that
device’s image.
Figure 6-1 SmartTRUNK configuration example
Server
C sco
7500
Router
Router
R1
Switch
R2
Switch
R3
Cisco Catalyst 5000
Switch
st.1
st.2
st.4
st.3
st.5
