3com 5500-SI Manual Do Utilizador

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Benefits of XRN
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Benefits of XRN
The benefits of XRN include:
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Increased environmental resilience provided by:
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Hardware and Software redundancy per unit or across the Distributed 
Fabric.
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Distributed management across the Distributed Fabric.
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Distributed Link Aggregation across the Distributed Fabric.
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Distributed Resilient Routing across the Distributed Fabric.
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Increased network performance provided by:
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Switching capacity that increases as you add a Switch to the Fabric. So 
network performance and resilience expand as the Fabric grows.
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Link Aggregation supported across the Distributed Fabric.
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Flexibility provided by:
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Support across any of the Switches within an individual 3Com Switch 5500 
family to create an XRN Distributed Fabric. 
XRN Features
This section describes the key features of XRN.
Distributed Device
Management (DDM)
DDM provides single IP address management across the interconnected Switches 
that form the Distributed Fabric. This allows the entire Distributed Fabric to be 
managed and configured as a single managed entity. In the event of failure in one 
of the Switches in the Distributed Fabric, management access to the remaining 
Switch is retained on the same IP address.
DDM allows you to manage the Distributed Fabric using the command line 
interface (CLI), Web interface, or SNMP.
DDM provides you with the ability to carry out the following:
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Single step Switch software upgrades across the Distributed Fabric (provided 
the Switches are of the same family).
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Distributed Fabric-wide configuration of all software features.
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Configuration of port-specific software features across the Distributed Fabric 
using a single management interface.
Distributed Resilient
Routing (DRR)
DRR allows the Switches in the Distributed Fabric to act as a single logical router 
which provides router resiliency in the event of failure in one of the interconnected 
Switches. With DRR, Switches in the Distributed Fabric are routing, which 
significantly increases the overall Layer 3 capacity of the core of the network. 
DRR can intelligently distribute the routing load across both Switches in the 
Distributed Fabric, which maximizes routing performance and makes full use of 
bandwidth capacity.
Switches in the Distributed Fabric provide Layer 3 local forwarding for directly 
connected hosts and devices.