Cajun P550 Switch Overview

OpenTrunk Technology

OpenTrunk technology translates VLAN-tagged frames from one format to another (including CoS).

The switch is delivered as a plug-and-play IEEE 802.1D standard bridge, but supports several VLAN tagging schemes. This makes the switch highly interoperable in existing networks because:

❒Any port can be a trunk port.

❒Ports have configurable VLAN tagging on a per-port basis.

❒Ports process a number of popular VLAN tagging schemes, including major vendors’ proprietary schemes.

Figure 1-6.Open Trunk Technology

3Com LinkSwitch

 

 

 

3Com LinkSwitch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Multilayer

 

 

P550

 

 

Multilayer

 

 

 

 

 

 

 

 

 

 

 

IEEE 802.1Q

 

 

 

IEEE 802.1Q

 

 

 

 

 

 

 

 

 

OpenTrunk translates VLAN-tagged frames from one format to another (including CoS)

Open Trunk Technology features include:

❒Switch supports frame encapsulation

•Identifies frame VLAN via tag

•Associates frame priority

❒Switch supports multiple tagging formats

•IEEE 802.1Q standard draft document

•A major vendor’s multi-level tagging scheme

•3Com VLAN Tag and PACE priority signalling

❒Switch supports translation to and from any format. A packet can enter the switch with a 3Com SuperStack II VLAN tag and exit the switch as a multi-layer tagged packet.

Cajun P550/P220 Switch Operation Guide

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