Enterasys Networks Smart 2200 Manuel d'utilisateur télécharger pdf (Page 19)

Overview

Introduction 1-3

The RAD requests start at an interval of 1 per second. The interval then doubles after every

transmission until an interval of 300 seconds is reached. At this point, the interval remains at 300

seconds. The RAD requests continue until an IP address is received from a RARP or BootP server,

or an IP address is entered using Local Management.

1.1.3 Full Duplex Switched Ethernet

Each switched Fast Ethernet port on the 2H258-17R supports 100 Mbps operation, and can operate

in Full Duplex Switched Ethernet (FDSE) mode. FDSE enables each port to provide up to

200 Mbps of bandwidth to connected devices that support FDSE.

1.1.4 SmartTrunk

Traditional 802.1D Spanning Tree Bridges only allow one active data path between any two

switches; all other parallel data paths are in Standby or Blocking mode. If one interface or path

should fail, then the other interface automatically comes out of Blocking mode and forwards all of

the traffic. This is fine for redundancy purposes. However, it is not the most efficient use of

resources.

SmartTrunk, also referred to as SmartTrunking, is Enterasys Networks’ terminology for load

balancing or load sharing. SmartTrunk provides the ability to take full advantage of the network’s

redundant bandwidth. SmartTrunk divides network traffic across multiple ports in parallel to

provide additional throughput. The SmartTrunk application can be used with any of Enterasys

Networks’ switch modules (except ATM modules).

For more information about SmartTrunk and how to configure it the SmartSwitch device, refer to

the Enterasys Networks SmartTrunk User’s Guide.

1.1.5 Remote Monitoring (RMON)

The 2H258-17R supports all nine Ethernet RMON groups. The Statistics, Alarms, Events and

History groups are enabled on all ports by default.

Enterasys Networks RMON Actions is a vendor-specific extension of RMON and provides the

ability to set an “Action” on any SNMP MIB variable. The Action can be triggered by any RMON

Event and/or Alarm. An example of an Action would be to turn off a MIB-2 interface if a

broadcast threshold is crossed.

NOTE: The 2H258-17R will reboot after RAD is successful.

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Enterasys Networks Smart 2200 Manuel d'utilisateur Page 19