Key Guidelines For Implementation; General Guidelines - 3Com 4007 Implementation Manual

Key Guidelines for
Implementation

General Guidelines

Each TCMP agent:
Periodically transmits a TCMP helloMessage through every trunk port.
Continuously listens for helloMessages from other trunk ports.
Builds a list of ports that TCMP has detected.
Uses this list to activate or deactivate trunk ports to maintain valid
trunk configurations.
TCMP uses three trunk port states to control port activation and
deactivation:
notInUse — A trunk port in this state has not been selected to
participate in the trunk.
selected — TCMP has selected the trunk port to participate in the
trunk, but the port has not yet become active.
inUse — A trunk port is fully active on the trunk.
Consider the following important factors when you implement and
configure trunks:
Create trunks before you define VLANs.
An interface module supports four point-to-point trunks, each built
from up to eight ports. All channels in a trunk must connect:
Correctly configured ports
Identical types of ports (with no two ports on a trunk connected to
the same network)
Identical types of network nodes (switches or servers)
You cannot mix Fast Ethernet and Gigabit Ethernet links in a trunk. All
links to be trunked must be homogeneous.
You can create a trunk on modules through the backplane using a
switch fabric module and any other switching module.

Key Guidelines for Implementation

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