Nortel Networks 70 Series manual Buffer Sizes, Model Buffer Size

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Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches

Filtering and forwarding incoming and outgoing traffic to the appropriate route without slowing down the traffic

Store-and-forward forwarding mode to minimize erroneous packets on the network

Autonegotiation on each port with the following four modes:

10BASE-T half-duplex

10BASE-T full-duplex

100 BASE-TX half-duplex

100 BASE-TX full-duplex

Note: In order for ports on a BayStack 70 Series 10/100 Ethernet Switch to operate in full-duplex mode, the switch must be connected to a device that supports autonegotiation in accordance with the IEEE 802.3u specification.

Back pressure in half-duplex mode

Automatic polarity detection and correction

Easy plug-and-play installation with no software to configure, which saves time and minimizes the potential for configuration errors

A comprehensive LED indicator panel for monitoring switching condition and individual port status

Conformity to the IEEE 802.3u 100BASE-TX Class II standard

Conformity to the 802.3 10BASE-T standard

Per port buffer sizes, as shown in Table 1-3

Table 1-3.

Buffer Sizes

 

 

 

 

Model

 

Buffer Size

 

 

BayStack 70-8T 10/100 Ethernet Switch

64 kilobytes (KB)

BayStack 70-16T 10/100 Ethernet Switch

128 KB

BayStack 70-24T 10/100 Ethernet Switch

128 KB

 

 

 

MDI/MDI-X push button switch for uplink capability

1-10

206375-A

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Contents Installation and Reference for Copyright 1999 Nortel Networks Iii Restricted Rights Legend Statement of ConditionsNortel Networks NA Inc. Software License Agreement 206375-A Contents Chapter Troubleshooting Figures 206375-A Tables Xii Preface PurposeAudience Hard-Copy Technical ManualsHow to Get Help Technical Solutions Center Telephone NumberPage BayStack 70 Series 10/100 Ethernet Switches Overview Chapter IntroductionPhysical Description Front PanelFront Panel of the BayStack 70-8T 10/100 Ethernet Switch RJ-45 10BASE-T/100BASE-TX Ethernet Ports LEDs Description of Switch and Port Status LEDs Type Label Color Activity Description Rear Panel of the BayStack 70-24T 10/100 Ethernet Switch DC Power Adapter Model MAC Addresses in Information Table FeaturesMAC Address Quantities Buffer Sizes Model Buffer SizeExternal Power Adapters Model External Power AdapterPage Chapter Network Configuration Benefits of Using Switching TechnologyTypes of Ethernet Switches Desktop Switching BeforeSegment Switching Before After Extending a Network Bridging from 10BASE-T to 100BASE-TX Networks Bridging 10 Mb/s Networks to 100 Mb/s NetworksPower Workgroups Power Workgroup ConnectionsChapter Installation Package ContentsPower Specifications Operating EnvironmentInstalling the Switch Set the switch on a desktop or any other flat surfaceAttach any additional devices to the ports in your switch Connecting Devices to the Switch Installing the Switch in a RackConnecting Power Verifying Installation Checking the Diagnostic Displays BayStack 70-24T 10/100 Ethernet Switch LED DisplayDescription of Switch and Port Status LEDs Page Chapter Troubleshooting Using the LED DisplayPage Table A-1 Technical Specifications Appendix a Technical SpecificationsProduct Specifications Electromagnetic Emissions Physical SpecificationsEnvironmental Specifications Electromagnetic Susceptibility Safety Agency ApprovalsPerformance Specifications Page 10BASE-T/100BASE-TX UTP Cable Appendix B Cables and ConnectorsTable B-1 RJ-45 Connector Pin Assignments RJ-45Straight-Through and Crossover Cables Figure B-1. Straight-Through Twisted-Pair CableIndex NumbersIndex-2