Cabletron Systems MMAC-Plus 9H421-12 Supplementary Manual Download Page 3

 

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Appendix

 

9H421-12, 9H422-12 and 9H429-12 
Module Specific Information

 

Introduction

 

This appendix contains local management information that is specific to the 
9H421-12,  9H422-12 and 9H429-12 Fast Ethernet Switch Modules.

All three modules are 12-port switching modules. The 9H422-12 is equipped with 
eleven 10Base-T/100Base-TX ports (RJ45 connectors) and one FEPIM port, which 
accepts either a FE-100TX or a FE-100FX. The 9H421-12 is equipped with twelve 
100Base-FX ports with multimode fiber (SC connectors).

Each module can operate in either full duplex or half duplex mode.
Auto-negotiation for 100Base-T modules provides support for 10 Mbps and 100 
Mbps speeds at both half and full duplex. 100Base-FX supports 100 Mbps speed 
at both half and full duplex.

The auto-negotiation feature (available only with the 9H422-12 module) allows 
the module to automatically use the fastest rate supported by the device at the 
other end (either 10 Mbps or 100 Mbps at either half or full duplex). To negotiate 
duplex, both the 9H422-12 and the attached device must be configured for
auto-negotiation. If only the 9H422-12 is configured for auto-negotiation, the 
module will set the connection to half duplex at either the 10 Mbps or 100 Mbps 
rate. This technology is similar to how modems negotiate transmission speed, 
finding the highest transmission rate possible. Similarly, auto-negotiation 
determines the highest common speed between two devices and communicates at 
that speed. If no common speed is detected, the device will be partitioned.

 

Modifying Fields and User Privileges

 

To modify fields on this module, you must have read-write or super-user 
privileges. If you have read-only privileges, you can view information; however, 
you cannot modify any fields. For more information about user privileges and 
community names, see the 

 

SmartSwitch 9000 Module Local Management User’s 

Guide.

Summary of Contents for MMAC-Plus 9H421-12

Page 1: ...9031929 03 DRAFT SmartSwitch 9000 9H421 12 9H422 12 and 9H429 12 Local Management Appendix...

Page 2: ......

Page 3: ...he module to automatically use the fastest rate supported by the device at the other end either 10 Mbps or 100 Mbps at either half or full duplex To negotiate duplex both the 9H422 12 and the attached...

Page 4: ...ment Bus 2 SMB10 10 Mbps System Management Bus 3 HOST 4 LOCAL 5 INB Internal Network Bus 6 FENET1 Fast Ethernet Front Panel Port 1 FEPIM on the 9H422 12 7 FENET2 Fast Ethernet Front Panel Port 2 8 FEN...

Page 5: ...FE 100FX PIM do not support auto negotiation if either is installed the Advertised Ability field becomes unconfigurable and the Desired Operation Mode field does not toggle to auto negotiation NOTE Sm...

Page 6: ...t over two pairs of UTP cable 10BASE T Full Duplex Operating Full Duplex 10 Mbps Ethernet over two pairs of UTP cable Full Duplex indicates the module is connected to a single device and is not listen...

Page 7: ...t support auto negotiation the devices do a parallel detection and configure to either 10 Mbps or 100 Mbps but only at half duplex If the device connected to the module is standard Ethernet with no au...

Page 8: ...2 also displays link status the port type admin status the application operational mode and the status of auto negotiation Figure 2 9H422 12 Port Statistics Screen SmartSwitch 9000 Local Management P...

Page 9: ...a bad FCS with a non integral number of octets Undersize Packets Read only Displays the number of packets received whose size was less than the minimum Ethernet frame size of 64 bytes not including pr...

Page 10: ...y Displays BRIDGING indicating that the port is operating as a bridge with a high speed backbone connection Switching SFS may also be displayed indicating that the port is operating as a switch Operat...

Page 11: ...t 1 Use the arrow keys to highlight the Port field at the bottom of the Ethernet Port Statistics Screen 2 Press the Space Bar to increment or press the Delete key to decrement the port number 3 Press...

Page 12: ...10...

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