Chapter 4: SmartTRUNK Configuration Guide
70 SmartSwitch Router User Reference Manual
Configuring SmartTRUNKs
To create a SmartTRUNK:
1. Create a SmartTRUNK and specify a control protocol for it.
2. Add physical ports to the SmartTRUNK.
3. Specify the policy for distributing traffic across SmartTRUNK ports. This step is
optional; by default, the SSR distributes traffic to ports in a round-robin (sequential)
manner.

Creating a SmartTRUNK

When you create a SmartTRUNK, you specify if the DEC Hunt Group control protocol is
to be used or no control protocol is to be used:
• If you are connecting the SmartTRUNK to another SSR, other Cabletron devices (such
as the SmartSwitch 6000 or SmartSwitch 9000), or Digital GIGAswitch/Router, specify
the DEC Hunt Group control protocol. The Hunt Group protocol is useful in detecting
errors like transmit/rece ive failures, miscon figuration, etc.
• If you are connecting the SmartTRUNK to a device that does not support the DEC Hunt
Group control protocol, such as those devices that support Cisco’s EtherChannel
technology, specify no control protocol. Only link failures are detected in this mode.
To create a SmartTRUNK, enter the following command in Configure mode:

Add Physical Ports to the SmartTRUNK

You can add any number of ports to a SmartTRUNK. The limit is the number of ports on
the SSR. Any port on any module can be part of a SmartTRUNK. If one module should go
down, the remaining ports on other modules w ill remain operational.
Ports added to a SmartTRUNK must:
• Be set to full duplex.
• Be in the same VLAN.
• Have the same properties (L2 aging, STP state, and so on).
Create a SmartTRUNK that will be conn ected to a device
that supports the DEC Hunt Group control protocol.
smarttrunk create <smartrunk>
protocol huntgroup
Create a SmartTRUNK that will be conn ected to a device
that does not support the DEC Hunt Group control
protocol.
smarttrunk create <smartrunk>
protocol no-protocol