Foundry Switch and Router Installation and Configuration Guide
10 - 48 December 2000
Configuring a Trunk Group
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.
NOTE: If you connect the cables before configuring the trunk groups and then rebooting, the traffic on the
ports can create a spanning tree loop.
2. Configure the trunk group on one of the two switches or routers involved in the configuration. Save this
configuration to flash and reboot the system.
NOTE: Foundry Networks recommends that you reload the software immediately after saving a trunk group
configuration to the startup-config file, before making further configuration changes.
3. If the device at the other end of the trunk group is another Layer 2 or Layer 3 Switch, repeat Step 2 for the
other device.
4. When both devices are reset (re-booted) and operational, reconnect the cables to those ports that are now
configured as trunk groups, starting with the first port (lead port) of each trunk group.
5. To verify the connection is operational, use the show trunk command.
Stackable Switch Switch All traffic Destination MAC
address
Server IP Source and
destination IP
address
All other Source MAC
address
Router Switch IP Destination IP
address
IPX Destination IPX
address
AppleTalk Destination
AppleTalk address
All other Destination MAC
address
Server IP Source IP address
IPX Source IPX address
AppleTalk Source AppleTalk
address
All other Source MAC
address
Table 10.5: Foundry Trunk Group Load Sharing (Continued)
Foundry Device Type Trunk Group Type Traffic Type Load-Sharing
Basis