Configuring Trunk Groups and Dynamic Link Aggregation
December 2005 © Foundry Networks, Inc. 10 - 7
Table 10.3 shows how the FESX, FWSX, and FSX load balance traffic across the ports in a trunk group, if the
device is running FESX/FWSX software release 02.2.00 or later or FSX software release 02.1.00 or later.
Likewise, Table 10.4 shows how a FESX and FSX load balance traffic across the ports in a trunk group, if the
device is running a FESX/FWSX software release prior to 02.2.00 or a FSX software release prior to 02.1.00.
Note that load balancing on the FESX and FSX is hardware-based.
NOTE: There is no change in load balancing for routed traffic, which is always based on the source and
destination IP addresses and protocol field.
.
Configuring a Trunk Group
To configure a trunk group, do the following:
1. Disconnect the cables from those ports on both systems that will be connected by the trunk group. Do not
configure the trunk groups with the cables connected.
Table 10.3: Trunk Group Load Sharing on FSX Devices (Release 02.1.00 and Later) and FESX/FWSX Devices
(Release 02.2.00 and Later)
Traffic Type Load Balancing Method
Layer 2 bridged non-IP Source and destination MAC addresses
Layer 2 bridged TCP/UDP Source and destination IP addresses and
Source and Destination TCP/UDP ports
Layer 2 bridged IP (non-TCP/UDP) Source and destination IP addresses
Layer 3 routed traffic Source and destination IP addresses and
protocol field
Table 10.4: Trunk Group Load Sharing on FSX Devices (Pre-Release 02.1.00) and FESX/FWSX Devices (Pre-
Release 02.2.00)
Traffic Layer Traffic Type Load-Sharing Basis
Layer 2 All traffic types Destination MAC
address
Source MAC address
Layer 3 IP Destination IP address
Source MAC address
Protocol
All other traffic types Destination MAC
address
Source MAC address
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