3Com SuperStack 4 Configuration Manual page 421

How to Implement
XRN — Overview
Figure 107 Distributed Link Aggregation at the Network Backbone
Wiring Closet Aggregation
Backbone Aggregation
This section provides an overview on how to implement XRN in your network.
Following the steps below will ensure that your XRN network operates correctly.
1 Design your network using XRN Distributed Fabrics, taking into account all the
important considerations and recommendations (see
and Recommendations"
2 Ensure that the Switches you plan to interconnect to create an XRN Distributed
Fabric are of the same Family and are running the same version of software.
3 Create the XRN Distributed Fabric as follows:
Switch 5500G-EI Family — via the built-in dedicated Fabric ports connected
■
using a stacking cable as described in the "Creating an XRN Distributed Fabric"
Chapter in the Getting Started Guide that accompanies your Switch.
Once the Switches are interconnected to create an XRN Distributed Fabric, they
behave as if they were one Switch and can be managed via a single IP address.
4 Set up the IP information so you can begin managing and configuring the
Switches in the Distributed Fabric.
For more information on setting up IP information for your Switch so it is ready for
management, refer to the Getting Started Guide that accompanies your Switch.
5 If VLANs are required (for example, if the network is in a Layer 3 environment),
create the VLANs and assign VLAN membership to all ports.
6 Configure the Aggregated Links either manually or automatically via LACP,
ensuring they are tagged members of all VLANs.
7 Configure the router IP interfaces.
For detailed descriptions of the web interface operations and the command line
interface (CLI) commands that you require to manage the Switch please refer to
How to Implement XRN — Overview
XRN Distributed Fabric
XRN Distributed Fabric
on page 434).
Switch 5500 units
802.1w
"Important Considerations
433