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Cabletron Systems 9T122-24 - page 1
MMAC-Plus ™ 9T122-24 Three Port Token Ring MicroLAN ™ Switch Module User’s Guide ...
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Cabletron Systems 9T122-24 - page 2
i Notice Notice Cabletron Systems r eserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletr on Systems to determine whether any such changes have been made. The hardwar e, firmware, or softwar e described in this manual is subject to ...
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Cabletron Systems 9T122-24 - page 3
ii Notice FCC Notice This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference r eceived, including interference that may cause undesir ed operation. NOTE: This equipment has been tested and found to c ...
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Cabletron Systems 9T122-24 - page 4
iii Notice DOC Notice This digital apparatus does not exceed the Class A limits for radio noise emissions fr om digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le présent appareil numérique n’émet pas de br uits radioélectriques dépassant les limites applicables aux appareils num? ...
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Cabletron Systems 9T122-24 - page 5
v Contents Chapter 1 Intr oduction Features........................................................................................................................... 1-1 Related Manuals ............................................................................................................ 1-4 Getting Help ..................................... ...
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Cabletron Systems 9T122-24 - page 6
1-1 Chapter 1 Intr oduction The 9T122-24 MicroLAN™ Switch Module, shown in Figur e 1-1, is a three port T oken Ring bridge and router module. This module supports either one token ring with twenty four HUB connections, or two separate T oken Rings with twelve HUB connections, and an interface to the FNB backplane. Features Processor The 9T122-24 ...
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Cabletron Systems 9T122-24 - page 7
Introduction 1-2 Management Information Base (MIB) Support The 9T122-24 module provides MIB support including: • IETF MIB II (RFC 1213) • IETF RMON MIB (RFC 1271 and 1513) • IETF Bridge MIBs (RFC 1493 and 1525) • IEEE 802.5 T oken Ring MIB (RFC 1231) • Cabletron Enterprise MIBs Ring Security This feature pr events unauthorized stations fr ...
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Cabletron Systems 9T122-24 - page 8
1-3 F eatures Figure 1-1. The 9T122-24 MicroLAN Module 1 2 16 Mb MMAC PLUS ...
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Cabletron Systems 9T122-24 - page 9
Introduction 1-4 Related Manuals The manuals listed below should be used to supplement the procedur es and technical data contained in this manual. MMAC-Plus Installation Guide MMAC-Plus Operations Guide MMAC-Plus 9C300-1 Environmental Module User ’s Guide MMAC-Plus 9C214-1 AC Power Supply User ’s Guide MMAC-Plus Local Management User ’s Guid ...
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Cabletron Systems 9T122-24 - page 10
2-1 Chapter 2 Installation Installing the Micr oLAN Module The MMAC-Plus MicroLAN Module may be installed into any of the 14 slots that are available. T o install, follow the steps below: 1. Switch off the power supplies and r emove all power from the MMAC-Plus chassis. 2. Remove the blank panels, covering the slots that the module is being mounted ...
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Cabletron Systems 9T122-24 - page 11
Installation 2-2 Figure 2-1. Installing the MicroLAN Module 7 FLNK 8 FLNK FLNK 10 FLNK INS 11 FLNK INS 12 RX TX RX TX RX Circuit Card Card Guides Metal Back-Panel Jack for ESD wrist strap W arning: Ensure that the circuit card is between the card guides . Lock do wn the top and bottom plastic tabs at the same time, applying e v en pressure. ...
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Cabletron Systems 9T122-24 - page 12
2-3 The Reset Switch The Reset Switch The Reset switch is located on the front panel, under the top plastic tab as shown in Figure 2-2. It serves two functions: • Pressing the r eset switch twice within three seconds causes the pr ocessor (i960) to reset. • Pressing and holding the switch on for thr ee or more seconds causes the module to shutd ...
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Cabletron Systems 9T122-24 - page 13
Installation 2-4 User Accessible Components Figure 2-3 shows the various components that ar e accessible to the user . These consist of an eight position dip switch (explained in the next section), replaceable PROMs and sockets for RAM. These will be used for future upgrades. Figure 2-3. User Accessible Components SMB-1 PROM i960 Processor Flash SI ...
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Cabletron Systems 9T122-24 - page 14
2-5 Setting the Module Card DIP Switch Setting the Module Car d DIP Switch An eight switch DIP switch is located on the module car d as shown in position 8 in Figure 2-3 and in Figur e 2-4. The function of the switches are listed in T able 2-1. Figure 2-4. Location of Module DIP Switch 1 2 3 4 5 6 7 8 ...
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Cabletron Systems 9T122-24 - page 15
Installation 2-6 See the Cautions at the end of this table. T able 2-1. Function of DIP Switch Switch Function Description 8 Clear Password 1 When toggled, this switch clears user-enter ed passwords stor ed in NVRAM, and restor es the default passwords. Once r eset you can use the defaults or enter new passwords. 7 Clear NVRAM 2 The module uses NVR ...
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Cabletron Systems 9T122-24 - page 16
2-7 Ring Speed Ring Speed The module defaults to a 16Mbps ring speed on all rings. This may be changed though local management. Multi-Ring Out Capability Any port of the module may be configured as a ring-out port thr ough management software. In this configuration a stand-alone passive concentrator (such as an IBM 8228) may be added to the ring ...
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Cabletron Systems 9T122-24 - page 17
3-1 Chapter 3 Operation The 9T122-24 MicroLAN Module pr ovides connectivity between the front panel T oken Ring(s) and the FDDI rings on the backplane (FNB-1 or FNB-2). MMAC-Plus modules connect to either the Internal Network Bus (INB) or the Flexible Network Bus (FNB) bus. The 9T122-24 module connects to the FNB bus. Shown in Figure 3-1 is a block ...
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Cabletron Systems 9T122-24 - page 18
Operation 3-2 T ransparent Bridging T ransparent Bridging is accomplished by building a Sour ce Address T able (SA T) from sour ce MAC/physical addresses and using the SA T to make forwarding decisions. The 9T122-24 prevents unnecessary network traf fic from passing thr ough the module by implementing two separate filtering processes — IEEE 802 ...
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Cabletron Systems 9T122-24 - page 19
3-3 Bridging 2. The receiving bridges append their own r oute information to the Route Information Field (RIF) in the MAC frame header and transmit the frame again. 3. Eventually , the original source device receives all of the ARE r eplies from the other end stations on the network. 4. From this information, the sour ce device can determine a desi ...
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Cabletron Systems 9T122-24 - page 20
Operation 3-4 Fle xible Netw ork Bus (FNB) The FNB consists of two dual FDDI networks, the FNB-1 and FNB-2, providing up to 400 Mbps of data bandwidth. These FDDI networks are 100% ANSI FDDI-compliant supporting SMT (version 7.3), MAC, PHY , and PMD standards. This allows the FNB to traverse multiple MMAC-Plus hubs, or connect to any ANSI FDDI-comp ...
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Cabletron Systems 9T122-24 - page 21
3-5 System Diagnostic Controller System Diagnostic Contr oller This diagnostic controller is composed of a Z-80 micr oprocessor and it’s supporting logic. The diagnostic controller is designed to contr ol the power-up sequencing of modules, monitor the 9T122-24 input and output power parameters, keep watch over the main host processor , as well a ...
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Cabletron Systems 9T122-24 - page 22
4-1 Chapter 4 LANVIEW LEDs The front panel LANVIEW LEDs, shown in Figur e 4-1, indicate the status of the module and may be used as an aid in troubleshooting. Figure 4-1. LANVIEW LEDs 16 Mb 1 2 System Status FNB T ransmit T oken Ring Mac T r ansmit T oken Ring Mac Receiv e FNB Receiv e Link T oken Ring Speed (16mb) ...
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Cabletron Systems 9T122-24 - page 23
LANVIEW LEDs 4-2 The functions of the two System Status LEDs, System Management Bus (SMB) and the CPU, are listed in T able 4-1. The function of the FNB receive LED is listed in T able 4-2. The function of the FNB transmit LED is listed in T able 4-3. T able 4-1. System Status LEDs (SMB and CPU) LED Color State Description Green Functional Fully op ...
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Cabletron Systems 9T122-24 - page 24
4-3 The function of the T oken Ring Mac receive LEDs ar e listed in T able 4-4. The function of the T oken Ring Mac transmit LEDs are listed in T able 4-5. The functions of the Link LED are listed in T able 4-6. T able 4-4. T oken Ring Receive LED LED Color State Red No link, Port disabled Red (Flashing) Link, Port disabled Green Link, No activity ...
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Cabletron Systems 9T122-24 - page 25
LANVIEW LEDs 4-4 The function of the T oken Ring speed LEDs is listed in T able 4-7. T able 4-7. T oken Ring Speed LED Color State Yellow 16 Mbs Off 4 Mps ...
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Cabletron Systems 9T122-24 - page 26
5-1 Chapter 5 Specifications Safety This equipment meets the safety requir ements of: • UL 1950 • CSA C22.2 No. 950 • EN 60950 • IEC 950 • EMI Requirements of FCC Part 15 Class A • EN 55022 Class A • VCCI Class I • EMC requir ements of: EN 50082-1 IEC 801-2 ESD IEC 801-3 Radiated susceptibility IEC 801-4 EFT Service MTBF (MHBK-217E ...
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Cabletron Systems 9T122-24 - page 27
Specifications 5-2 Ph ysical Dimensions: 35.0 D x 44.0 H x 3.0 W centimeters (13.8 D x 17.4 H x 1.2 W inches) W eight: Unit: 1.36 kg. (3lb) Shipping: 1.81 kg. (4lb) Electrical CPU: i960 Shared DRAM Memory: 4Mb (expandable to 12 Mb) Local DRAM Memory: 4Mb (expandable to 12 Mb) Flash: 2Mb (expandable to 14 Mb) T oken Ring Interfaces: (2) T exas Inst ...
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