Cisco Systems PA-4R User Manual
PA-4R Half-Duplex Token Ring Port Adapter
Installation and Configuration
Product Numbers: PA-4R and PA-4R=
This configuration note describes the installation and configuration of the half-duplex PA-4R(=) Token
Ring port adapter, which can be used in the following supported platforms:
• Cisco 7200 series routers,, which consists of the 2-slot Cisco 7202, 4-slot Cisco 7204, and the 6-slot
Cisco 7206
• Second-generation Versatile Interface Processor (VIP2) in all Cisco 7500 series routers and Cisco
7000 series routers. (Refer to the section “Software and Hardware Requirements” on page 2.)
Note For VIP2 users, use this configuration note in conjunction with the configuration note
Contents
Second-Generation Versatile Interface Processor (VIP2) Installation and Configuration (Document
Number 78-2658-xx), which shipped with your VIP2.
For Cisco 7200 series router users, use this configuration note in conjunction with the Cisco 72xx
Installation and Configuration Guide that shipped with your Cisco 7200 series router.
This configuration note is organized into the following sections:
• Port Adapter Installation Prerequisites, page 2
• What Is the 4R Port Adapter?, page 9
• VIP2 and the 4R Port Adapter, page 13
• Cisco 7200 Series and the 4R Port Adapter, page 27
• Related Documentation, page 38
• Obtaining Documentation, page 39
• Obtaining Technical Assistance, page 40
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Copyright © 1996–2002. Cisco Systems, Inc. All rights reserved.
Port Adapter Installation Prerequisites
Port Adapter Installation Prerequisites
This section provides software requirements, a list of parts and tools you will need to perform the port
adapter installation, and safety and ESD-prevention guidelines to help you avoid injury and damage to
the equipment during installation. Also included is information on the systems in which port adapters
can be installed and overview information on interface specifications.
The following sections discuss general information and information about port adapter installation
requirements:
• Software and Hardware Requirements, page 2
• Checking Hardware and Software Compatibility, page 3
• List of Parts and Tools, page 3
• Safety Guidelines, page 3
• Token Ring Overview, page 6
Software and Hardware Requirements
The 4R port adapter on a VIP2-15 or VIP2-40 installed in a Cisco 7000 series or Cisco 7500 series router
requires that the host router is running Cisco IOS Release 11.1(472) or later, Cisco IOS Release
11.1(9)CA or later, Cisco IOS Release 11.2(1) or later, or Cisco IOS Release 11.2(6)P or later.
The 4R port adapter installed in a Cisco 7204 or Cisco 7206 requires that the host router is running Cisco
IOS Release 11.1(472) or later, Cisco IOS Release 11.1(9)CA or later, Cisco IOS Release 11.2(1) or
later, or Cisco IOS Release 11.2(6)P or later.
The 4R port adapter installed in a Cisco 7202, requires that the host router is running Cisco IOS
Release 11.1(19)CC1 or later, or Cisco IOS Release 11.3(4)AA or later.
In the Cisco 7000 series or Cisco 7500 series routers, the 4R port adapter requires the following VIP2
models:
• VIP2-15 (1 MB of SRAM, 8 MB of DRAM)
• VIP2-20 (1 MB of DRAM, 16 MB of SRAM)
• VIP2-40 (2 MB of SRAM, 32 MB of DRAM)
Caution To prevent system problems, the VIP2 requires that the Cisco 7000 series router has the 7000 Series
Route Switch Processor (RSP7000) and 7000 Series Chassis Interface (RSP7000CI) installed. The VIP2
will not operate properly with the Route Processor (RP), Switch Processor (SP), or Silicon Switch
Processor (SSP) installed in the Cisco 7000 series router.
Note The minimum recommended VIP2 model is a VIP2-15.
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Checking Hardware and Software Compatibility
To check the minimum software requirements of Cisco IOS software with the hardware installed on your
router, Cisco maintains the Software Advisor tool on Cisco.com. This tool does not verify whether
modules within a system are compatible, but it does provide the minimum IOS requirements for
individual hardware modules or components.
Note Access to this tool is limited to users with Cisco.com login accounts.
To access Software Advisor, click Login at Cisco.com and go to Technical Support Help—Cisco TAC:
Tool Index: Software Advisor. You can also access the tool by pointing your browser directly to
http://www.cisco.com/cgi-bin/support/CompNav/Index.pl.
Choose a product family or enter a specific product number to search for the minimum supported
software release needed for your hardware.
List of Parts and Tools
You need the following tools and parts to install a port adapter. If you need additional equipment, contact
a service representative for ordering information.
Port Adapter Installation Prerequisites
• PA-4R(=) port adapter and one of the following:
• The appropriate Cisco IOS software (For specific Cisco IOS software prerequisites, refer to the
• Cables appropriate for the port adapter’s interfaces (Token Ring cables are not available from Cisco
• Number 1 Phillips and a 3/16-inch, flat-blade screwdriver.
• Your own ESD-prevention equipment or the disposable grounding wrist strap included with all
Safety Guidelines
Following are safety guidelines that you should follow when working with any equipment that connects
to electrical power or telephone wiring.
–
VIP2-15(=), VIP2-20=, VIP2-40(=)
–
Cisco 7200 series router with at least one available port adapter slot
section “Software and Hardware Requirements” on page 2.)
Systems; they are available from outside commercial cable vendors.)
upgrade kits, FRUs, and spares.
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Port Adapter Installation Prerequisites
Safety Warnings
Warning
Waarschuwing
Varoitus
Attention
This warning symbol means danger. You are in a situation that could cause bodily injury. Before you
work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar
with standard practices for preventing accidents. To see translations of the warnings that appear in
this publication, refer to the Regulatory Compliance and Safety Information document that
accompanied this device.
Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan
veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij
elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard
maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze
publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information
(Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is
ingesloten.
Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen
kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja
tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten
käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information
-kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer
des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient
des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment
utilisées pour éviter les accidents. Pour prendre connaissance des traductions d’avertissements
figurant dans cette publication, consultez le document Regulatory Compliance and Safety
Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.
4
Warnung
Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer
Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie
sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur
Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen
Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information
(Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät
geliefert wurde.
Avvertenza
Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle
persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai
circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La
traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory
Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che
accompagna questo dispositivo.
Advarsel
Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du
utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser
innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se
oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory
Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble
levert med denne enheten.
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Aviso
¡Advertencia!
Varning!
Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos
físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos
relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir
possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o
documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições
Reguladoras) que acompanha este dispositivo.
Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular
cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los
procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias
que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and
Safety Information (Información sobre seguridad y conformidad con las disposiciones
reglamentarias) que se acompaña con este dispositivo.
Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada.
Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och
känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer
i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av
föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
• Before beginning any procedures requiring access to the chassis interior, locate the emergency
power-off switch for the room in which you are working.
• Disconnect all power and external cables before moving a chassis.
• Do not work alone when potentially hazardous conditions exist and never assume that power has
been disconnected from a circuit; always check.
• Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
Carefully examine your work area for possible hazards such as moist floors, ungrounded power
extension cables, and missing safety grounds.
Telephone Wiring Guidelines
Use the following guidelines when working with any equipment that is connected to telephone wiring or
to other network cabling:
• Never install telephone wiring during a lightning storm.
• Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
• Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
• Use caution when installing or modifying telephone lines.
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Port Adapter Installation Prerequisites
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures. Port adapters and processor modules
consist of printed circuit boards that are fixed in metal carriers. Electromagnetic interference (EMI)
shielding and connectors are integral components of the carrier. Although the metal carrier helps to
protect the board from ESD, use a preventive antistatic strap during handling.
Following are guidelines for preventing ESD damage:
• Always use an ESD wrist or ankle strap and ensure that it makes good skin contact.
• Connect the equipment end of the strap to an unfinished chassis surface.
• When installing a component, use any available ejector levers or captive installation screws to
properly seat the bus connectors in the backplane or midplane. These devices prevent accidental
removal, provide proper grounding for the system, and help to ensure that bus connectors are
properly seated.
• When removing a component, use any available ejector levers or captive installation screws to
release the bus connectors from the backplane or midplane.
• Handle carriers by available handles or edges only; avoid touching the printed circuit boards or
connectors.
• Place a removed component board-side-up on an antistatic surface or in a static shielding container.
If you plan to return the component to the factory, immediately place it in a static shielding
container.
• Avoid contact between the printed circuit boards and clothing. The wrist strap only protects
components from ESD voltages on the body; ESD voltages on clothing can still cause damage.
• Never attempt to remove the printed circuit board from the metal carrier.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohms.
Token Ring Overview
The following sections describe Token Ring specifications, physical connections, connection equipment,
and cables and connectors.
Token Ring Specifications
The term Token Ring refers to both IBM’s Token Ring Network, which IBM developed in the 1970s, and
to IEEE 802.5 networks. The IEEE 802.5 specification was modeled after, and still closely shadows,
IBM’s network. The two types are compatible, although the specifications differ slightly.
Token Ring and IEEE 802.5 are token passing networks, which move a small frame, called a token,
around the network. Possession of the token grants the right to transmit; a station with information to
transmit must wait until it detects a free token passing by.
The IBM Token Ring specifies a star topology, with all end stations connected through a device called a
multistation access unit (MSAU). IEEE 802.5 does not specify any topology, although most
implementations are based on a star configuration with end stations attached to a device called a media
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access unit (MAU). Also, IBM Token Ring specifies twisted-pair cabling, whereas IEEE 802.5 does not
specify media type. Most Token Ring networks use shielded twisted-pair cabling; however, some
networks that operate at 4 Mbps use unshielded twisted-pair cable.
Table 1 shows a comparison of the two types.
Table 1 IBM Token Ring and IEEE 802.5 Comparison
Network Type Data Rates Stations/ Segment Topology Media Signaling Access Method Encoding
IBM Token Ring
network
IEEE 802.5
network
4, 16 Mbps 260 shielded twisted-pair
72 unshielded twisted-pair
4, 16 Mbps 250 Not
Star Twisted-pair Baseband Token passing Differential
Manchester
specified
Not
specified
Baseband Token passing Differential
Manchester
All 4R port adapter interfaces support both 4- and 16-Mbps, half-duplex operation and early token
release. The default for all ports is for 4-Mbps operation and early token release disabled. Both states
are enabled with configuration commands in configuration mode.
To enable 16 Mbps, specify the slot/port address and use the configuration command ring-speed 16; to
return to 4 Mbps operation, use the command ring-speed 4. To enable and disable early token release,
specify the slot/port address and use the configuration command [no] early token release. For complete
descriptions and examples of software commands, refer to the related software configuration
documentation.
In the typical Token Ring network shown in Figure 1, lobe cables connect each Token Ring station (4R
port adapter interface) to the MSAU (or MAU), and patch cables connect adjacent MSAUs (or MAUs)
to form one large ring.
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Port Adapter Installation Prerequisites
Figure 1 Token Ring Network Physical Connections
MAU or MSAU
Ring
in12345678
Stations
MAU or MSAU
Ring
in12345678
Stations
Ring
out
Ring
out
Patch
cables
Lobe
cables
MAU or MSAU
Ring
in12345678
Stations
MAU or MSAU
Ring
in12345678
Stations
Ring
out
Ring
out
H2058
Token Ring Connection Equipment
You will need an 802.5 MAU or an MSAU to provide the interface between the 4R port adapter Token
Ring interfaces and the external ring, and a Token Ring lobe cable between each 4R port adapter
interface and the MAU or MSAU. Lobe cables connect each Token Ring station (4R port adapter
interface) to the MAU or MSAU, and patch cables can connect adjacent MSAUs to form one large ring.
4R port adapter interfaces operate at either 4 or 16 Mbps. The default speed for all 4R port adapter
interfaces is 4 Mbps, which you can change to 16 Mbps on any port using the ring-speed n configuration
command, where n is the speed (4 or 16) in Mbps. The speed of each Token Ring port must match the
speed of the ring to which it is connected. Before you enable the Token Ring interfaces, ensure that each
is set for the correct speed, or it can bring down the ring.
Caution Each 4R port adapter interface must be configured for the same ring speed as the ring to which it is
connected, either 4 or 16 Mbps. If the port is set for a different speed, it will cause the ring to beacon,
which effectively brings the ring down and makes it inoperable.
Token Ring Distance Limitations
The maximum transmission distance is not defined for IEEE 802.5 (Token Ring) networks. Shielded
twisted-pair (STP) cabling is most commonly used for rates of 4 and 16 Mbps. Twisted-pair cabling is
more susceptible to interference than other types of cabling; therefore, the network length and repeater
spacing should be planned accordingly.
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Token Ring Speed Considerations
Before you install the 4R port adapter, determine the ring speed (4 or 16 Mbps) of each ring to be
connected to the server. There is no factory default for the interface speed; you must set the speed of
each interface (within the setup command facility or with the ring-speed command) before you bring
the interface up and insert it into the ring with the no shutdown command.
Caution Each Token Ring port must be configured for the same ring speed as the ring to which it is connected;
either 4 or 16 Mbps. If the port is set for a different speed, it will cause the ring to beacon, which
effectively brings the ring down and makes it inoperable.
What Is the 4R Port Adapter?
The following sections provide additional information specific to the 4R port adapter:
• Port Adapter Locations on the VIP2 and the Cisco 7200 Series Router, page 9
• 4R Port Adapter LEDs, page 11
What Is the 4R Port Adapter?
• 4R Port Adapter Receptacles, Cables, and Pinouts, page 12
The 4R port adapter (see ) provides up to four IBM Token Ring or IEEE 802.5 Token Ring interfaces.
Each Token Ring interface can be set for 4 Mbps or 16 Mbps. All Token Ring ports on PA-4R are half
duplex (only) and run at wire speed.
Figure 2 4R Port Adapter (Faceplate View)
TOKEN RING
0
1
2
3
The 4R port adapter can be installed on the VIP2 in port adapter slot 0 and port adapter slot 1, or in the
Cisco 7200 series routers in any of the chassis’ port adapter slots: slot 1 and slot 2 of the Cisco 7202,
slots 1 through 4 of the Cisco 7204,and slots 1 through 6 of the Cisco 7206..
Port Adapter Locations on the VIP2 and the Cisco 7200 Series Router
This section provides information about where you can install the 4R port adapter on the VIP2 and in
the Cisco 7200 series routers.
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Note Port adapters have handles that allow for easy installation and removal; however, they are occasionally
not shown in this publication to highlight port adapter faceplate detail.
shows a VIP2-15 or VIP2-40 with two installed port adapters. With the VIP2 oriented as shown, the left
port adapter is in port adapter slot 0, and the right port adapter is in port adapter slot 1.
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What Is the 4R Port Adapter?
r
Figure 3 Two Port Adapters on the VIP2-15 or VIP2-40 (Horizontal Orientation Shown)
Boot ROM
U6
U2
U4
DRAM
SIMMs
Port adapte
in slot 1
H6448
SRAM
DIMM U5
Port adapter
in slot 0
Bus connector
CPU
Note In the Cisco 7000, Cisco 7507, and Cisco 7513 chassis, the VIP2 is installed vertically. In the Cisco 7010
and Cisco 7505 chassis, the VIP2 is installed horizontally.
In the Cisco 7200 series routers, port adapter slots are numbered from the lower left to the upper right,
beginning with port adapter slot 1 and continuing through port adapter slot 2 for the Cisco 7202, slot 4
for the Cisco 7204, and slot 6 for the Cisco 7206. Port adapter slot 0 is reserved for the optional Fast
Ethernet port on the I/O controller.
Note The I/O controller is available with or without a Fast Ethernet port. You can install both I/O controller
types in all Cisco 7200 series routers; however, when you install an I/O controller with a Fast Ethernet
port in a Cisco 7202, the system software automatically disables the port.
Figure 4 shows a Cisco 7206 with installed port adapters and an I/O controller with a Fast Ethernet port.
Not shown are the Cisco 7202, which has two port adapter slots, and the Cisco 7204, which has four port
adapter slots. The 4R-FDX port adapter can be installed in any available port adapter slot in the
Cisco 7200 series routers.
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Figure 4 Port Adapters in the Cisco 7206
Blank port adapter
5
3
2
1
Port adapter slot 5
Port adapter slot 3
0
3
ENABLED
N
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C
D
C
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1
ENABLED
LINK
3
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2
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PCMCIA
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EJECT
SLOT 0
What Is the 4R Port Adapter?
Port adapter slot 6
Port adapter slot 4
Port adapter slot 2
TOKEN RING
6
3
2
1
0
ETHERNET 10BT
ENABLED
FAST SERIAL
N
E
D
C
B
D
C
D
D
C
B
D
R
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SLOT 1
C
L
R
R
T
T
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FE MII
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X
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5
4
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FAST ETHERNET INPUT/OUTPUT CONTROLLER
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5
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ETHERNET-10BFL
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H6422
Port adapter slot 1
4R Port Adapter LEDs
The 4R port adapter has several LEDs that indicate status of the port adapter and its interfaces. After
system initialization, the enabled LED goes on to indicate that the 4R port adapter has been enabled for
operation. (The LEDs are shown in .)
Figure 5 4R Port Adapter LEDs (Partial Faceplate View)
ENABLED
0
The following conditions must be met before the enabled LED goes on:
• The port adapter is enabled for operation and correctly connected
• The port adapter is receiving power
• The system contains a valid microcode version for the port adapter
If any of these conditions is not met, or if the initialization fails for other reasons, the port adapter’s
enabled LED does not go on.
Port adapter slot 0
TOKEN RING
IN-RING
4/16 Mbps
3
2
1
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When a Token Ring interface is configured by using software commands, the In Ring and 4/16 Mbps
LEDs (shown in ) indicate the following for each port:
• In ring—Goes on when the interface is currently active and inserted into the ring; off when the
interface is not active and is not inserted into a ring.
• 4/16 Mbps—Goes on if the interface is operating at 16 Mbps; off when the interface is operation at
4 Mbps (default).
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What Is the 4R Port Adapter?
4R Port Adapter Receptacles, Cables, and Pinouts
A network interface cable provides the connection between the 9-pin Token Ring receptacles on the 4R
port adapter and a media access unit (MAU). The 9-pin connector at the 4R port adapter end and the
MAU connector at the network end are described in the section “Token Ring Connection Equipment” on
page 8.
4R Port Adapter Cables
The Token Ring ports on the 4R port adapter are DB-9 (PC type) receptacles that require Type 1 or Type
3 lobe cables. Token Ring interface cables are not available from Cisco Systems, but are commercially
available through outside cable vendors.
Type 1 lobe cables use shielded twisted-pair (STP) cable and terminate at the network end with a large
MAU plug. (See Figure 6.) The 4R port adapter end of the cable is a DB-9 plug.
Figure 6 Token Ring Type 1 Lobe Cable Connectors (DB-9 and MAU Types)
4R port adapter end
MSAU or
MAU end
H5761
Type 3 lobe cables use either shielded or unshielded twisted-pair (UTP) cable and terminate at the
network end with an RJ-11 plug. (See .) The 4R port adapter end of the cable is a DB-9 plug.
Figure 7 Token Ring Type 3 Lobe Cable Connectors (DB-9 and RJ-11 Types)
4R port adapter end
MAU end
H5762
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4R Port Adapter Receptacle Pinout
Table 2 lists the pinout for the DB-9 receptacle used on the 4R port adapter.
Table 2 Token Ring Signals
Pin Signal
1 Ring-In B
5 Ring-Out A
6 Ring-In A
9 Ring-Out B
10 and 11 Ground
VIP2 and the 4R Port Adapter
VIP2 and the 4R Port Adapter
This section describes the 4R port adapter and its use with the VIP2 and provides the following
additional information specific to the 4R port adapter and its use on the VIP2 in Cisco 7000 series and
Cisco 7500 series routers:
• Installing or Replacing a Port Adapter on a VIP2, page 14
• Attaching 4R Port Adapter Interface Cables, page 18
• Configuring the 4R Interfaces, page 19
• Checking the Configuration, page 24
The 4R port adapter can be installed in either port adapter slot 0 or port adapter slot 1 on the VIP2. shows
a 4R port adapter installed in port adapter slot 0, on a VIP2-15 or VIP2-40.
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