Nortel Networks 1000ASE-XD - Manual (Page 81)

Chapter 2 Network configuration 81
Using the BayStack 420 10/100/1000 Switch
The names chosen for this example provide meaningful information to the
user (for example, S4:T5 to S1 indicates that Trunk 1, in Switch S4, connects
to Switch 1).
Before you configure trunks
When you create and enable a trunk, the trunk members (switch ports) take on
certain settings necessary for correct operation of the MultiLink Trunking feature.
Before you configure your MultiLink Trunk, you must consider these settings,
along with specific configuration rules, as follows:
1 Read the configuration rules provided in the next section, “Spanning tree
considerations for MultiLink Trunks” on page 82 .
2 Determine which switch ports (up to four) are to become trunk members (the
specific ports making up the trunk). A minimum of two ports are required for
each trunk.
Ensure that the chosen switch ports are set to Enabled, using either the Port
Configuration screen (see
“Port Configuration screen” on page 129 ) or
network management.
Trunk member ports must have the same VLAN configuration.
3 All network cabling should be complete and stable before configuring any
trunks, to avoid configuration errors.
4 Consider how the existing spanning tree will react to the new trunk
configuration (see
“Spanning tree considerations for MultiLink Trunks” on
page 82 ).
5 Consider how existing VLANs will be affected by the addition of a trunk.
6 After completing the above steps, see “MultiLink Trunk Configuration
screen” on page 135 for screen examples and field descriptions that will help
you configure your MultiLink Trunks.