Cisco Systems ATBRTH16 User Manual

CHAPTER

Wireless Mobile Interface Cards (WMICs)

The Cisco Wireless Mobile Interface Card (WMIC) is a Cisco 3200 Series router interface card in a standard PC/104-Plus form factor.

It is one component of the Cisco 3200 Series routers and provides a wireless interface:

• 2.4 GHz (802.11b/g) – Cisco 3201

• 4.9 GHz (public safety) – Cisco 3202

• 5.0 GHz (802.11h) – Cisco 3205 (The C3205WMIC-K9 and C3205WMIC-TP-K9 WMICs are

available only in the European Telecommunications Standards Institute [ETSI] domain.)

Caution The 4.9 GHz (public safety) radio requires an operators license and can only be operated by US Public

Safety operators who meet the requirements specified under FCC Part 90.20.

This chapterprovidesbasic information about the WMIC hardware for the purpose of performing simple troubleshooting, such as reconnecting a loose cable. To solve more difficult problems, please contact your vendor.

WMIC Component Systems

The ISA buses and PCI buses on the Cisco 3200 Series router cards provide power to the components on the cards. The WMIC does not receive or transmit communications signals on either bus, but it will pass signals through the bus to a card above or below the WMIC. Both buses comply with the PC/104-Plus standard.

The PCI bus signals allow the Cisco cards to communicate. Non-Cisco cards cannot communicate with the Cisco 3200 Series Router cards over the PCI bus.

Caution If you add non-Cisco cards that generates signals on the PCI bus, the router might shut down. Please do

not add non-Cisco cards that generate signals on the PCI bus.

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Figure 6-1 shows the WMIC header and bus locations.

Figure 6-1 WMIC Header and Bus Locations

Chapter 6 Wireless Mobile Interface Cards (WMICs)

1 PCI bus 2 Left antenna connector (J2) 3 Right antenna connector (J1) 4 ISA bus 5 10-pin Fast Ethernet header 6 24-pin multifunction header

Note The PC/104-Plus standard requires that the PCI bus and the ISA bus utilize keying features in the

standard stacking headers to guarantee proper module installation. On the PCI bus, pin D30 is removed and the D30 opening is plugged. On the ISA bus, pin C19 and pin B10 are removed, and the C19 and B10 openings are plugged.

Antenna Connector

On the radio card, there are two ultra-miniature coaxial connectors (U.FL connector) that are used to connect the coax cables between the WMIC and the external antenna connectors. Two connectors are used to support antenna diversity.

The cable should be as short as possible to minimize the loss in strength of the radio frequency (RF) signal. The cable carries the RF signal from the antenna to the low noise amplifier (LNA)on the receiver and transmits the RF signal from power amplifier (PA) to the antenna that radiates the RF signal.

There are many antenna connector families. The Cisco RP-TNC antenna connector can be used to support standard antennas.

103981

WMIC Console and Fast Ethernet Ports

Cisco 3200 Series router cards do not support any ISA bus signals. The PCI bus connector supports communication between Cisco 3200 Series router card and the Fast Ethernet Switch Mobile Interface Card (FESMIC) and Serial Mobile Interface Card (SMIC).

In a Cisco rugged enclosure, the WMIC communicates with the router through the WMIC Fast Ethernet interface. The WMIC Fast Ethernet ports are connected internally to Fast Ethernet ports that provide a communications link with the router.

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Chapter 6 Wireless Mobile Interface Cards (WMICs)

The WMIC interfaces are configured through a WMIC console port. In contrast, the Serial Mobile Interface Card (SMIC) and FESMIC communicate with the router through the PC/104-Plus bus. The interfaces are configuredthrough the router console port, and all of the router and FESMIC Fast Ethernet ports are identified by using the slot/port format.

The WMIC runs an independent IOS image and when it is configured, the link between the WMIC and the router forms an internal LAN. In standard configurations, a WMIC Fast Ethernet port is never brought out to the end cap.

The WMIC console port is brought out to the corresponding RJ-45 port on the I/O end cap, replacing a Fast Ethernet port. If the router includes one WMIC, the RS-232 WMIC console port replaces a Fast Ethernet port on the end cap. If the router includes two WMICs, two WMIC RS-232 console ports replace two Fast Ethernet ports on the end cap.

Note Currently, even if the router contains zero WMICs, in standard configurations a maximum of three Fast

Ethernet ports are brought out to the end cap. Unused RS-232 ports are sealed.

Fast Ethernet Signals on the WMIC

The Fast Ethernet signals are delivered through a 10-pin header. LED signals and RS-232 console signals are provided through the 24-pin multifunction header.

There is one set of fixed Fast Ethernet signals on the WMIC. The Fast Ethernet port signals are in compliance with IEEE 802.3. They are provided through the Ethernet headers, which support the following:

• Auto-negotiation for 10/100BASE-TX connection

• Full-duplex and half-duplex modes

• Low-power sleep mode

• 10BASE-T and 100BASE-TX using a single Ethernet connection

• Robust baseline wander correction performance

• Standard carrier signal multiple access collision detect (CSMA/CD) or full-duplex operation

• Integrated LED drivers

Note If Auto-MDIX is disabled, when connecting to Ethernet switches or repeaters a straight-through cable

can be used. When connecting to compatible workstations, servers, and routers, a crossover cable should be used. If Auto-MDIX is enabled, either a straight-through or crossover cable can be used can be used to make the connection, as the router automatically changes the signals on the pins to compensate.

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LED Behavior

During normal operations, the indicator signals on the wireless device have the following meanings.

• The status indicator signals operational status. Steady green indicates that the wireless device is

• The radio indicator blinks green to indicate radio traffic activity. The light is normally off, but it

• The Ethernet indicator signals traffic on the wired LAN. This indicator is normally green when an

Table 6-1 shows the details of LED behavior.

Table 6-1 Indicator Signals

Chapter 6 Wireless Mobile Interface Cards (WMICs)

associated with at least one wireless client. Blinking green indicates that the wireless device is operating normally but is not associated with any wireless devices.

blinks whenever a packet is received or transmitted over the radio.

Ethernet cable is connected, and blinks green when a packet is received or transmitted over the Ethernet infrastructure. The indicator is off when the Ethernet cable is not connected.

Message type

Boot loader status

Association status

Operating status

Boot Loader Errors

Ethernet indicator

Green – Green DRAM memory test. – Amber Red Board initialization test. – Blinking

Amber Green – Ethernet initialization test. Green Green Green Starting Cisco IOS software. – Green – At least one wireless client device is

– Blinking

– Green Blinking

Green – – Ethernet link is operational. Blinking

green Red – Red DRAM memory test failure. – Red Red File system failure. Red Red – Ethernet failure during image recovery. Amber Green Amber Boot environment error. Red Green Red No Cisco IOS image file. Amber Amber Amber Boot failure.

Status indicator

green

– – Transmitting/receiving Ethernet packets.

Radio indicator

Blinking green

– No client devices are associated; check the

green

Meaning

Flash memory test.

associated with the unit.

wireless device SSID and WEP settings. Transmitting/receiving radio packets.

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Table 6-1 Indicator Signals (continued)

Message type

Operation Errors

Configuration Reset

Failures Red Red Red Firmware failure; try disconnecting and

Firmware Upgrade

Key Features

The key features of the Cisco wireless devices are listed in Table 6-2.

Ethernet indicator

– Green Blinking

Blinking

Status indicator

Radio indicator

Meaning

Maximum retries or bufferfull occurred on

amber

the radio.

– – Transmit/receive Ethernet errors.

amber – Blinking

– General warning.

amber

– Amber – Resetting the configuration options to

factory defaults.

reconnecting unit power.

Blinking red – – Hardware failure. The wireless device

must be replaced.

– Red – Loading new firmware image.

Table 6-2 Key Features

Feature Description

Wireless Medium

Direct Sequence Spread Spectrum (DSSS) Orthogonal Frequency Division Multiplexing (OFDM)

Radio Media Access Protocol

SNMP Compliance Encryption Key Length Quality of Service

(QoS) Support

Carrier sense multiple access with collision avoidance (CSMA/CA)

MIB I and MIB II 128-bit Prioritization of traffic for different requirements, such as voice and video.

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Table 6-2 Key Features (continued)

Feature Description

Security

Cisco Wireless Security Suite:

Authentication:

• 802.1X support including LEAP, PEAP, EAP-TLS, and EAP-SIM to

yield mutual authentication and dynamic, per-user, per-session WEP keys

• MAC address and by standard 802.11 authentication mechanisms

Encryption:

• Static and dynamic IEEE 802.11 WEP keys of 40 bits and 128 bits

• 802.11i/WPAv2 Advanced Encryption Standard-Counter Mode with

Cipher Block Chaining Message Authentication Code Protocol (AES-CCMP); 128-bit key length

• Temporal Key Integrity Protocol (TKIP) WEP enhancements: key

hashing (per-packet keying), message integrity check (MIC), and broadcast key rotation by using WPA TKIP

Chapter 6 Wireless Mobile Interface Cards (WMICs)

Status Indicators

Memory

Automatic Configuration Support

Remote Configuration Support

Uplink Local Configuration

All WMICs in Root Mode:

PEAP, EAP-TTLS, LEAP, EAP-TLS, EAP-FAST, and EAP-SIM.

Cisco 3201 WMICs in Client Mode:

LEAP, EAP-TLS & EAP-FAST

Cisco 3202 and Cisco 3205 WMICs in Client Mode:

LEAP LEDs provide information concerning association status, operation,

error/warning, firmware upgrade, and configuration, network/modem, and radio status

8 MB Flash 32 MB DRAM

BOOTP and DHCP

Telnet, HTTP, FTP, TFTP, and SNMP

Auto-sensing 10/100BaseT Ethernet Console port

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