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Cisco 3800 Series Integrated Services Routers

Cisco 3800 and 3900 Series ATM OC-3 Network Module

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Cisco Systems® extends WAN connectivity by adding high-speed ATM access to remote branch offices with the Cisco® 3800 and 3900 ATM OC-3 Network Module.

Overview

A 155-Mbps ATM OC-3 network module is available on the Cisco 3825 and 3845 integrated services routers and on Cisco 3925 and 3945 Integrated Services Routers, starting with Cisco IOS ® Software Release 12.4(3) Mainline and 15.0(1)M respectively(Figure 1). The network module supports the ATM forum standard ATM Adaptation Layer 5 (AAL5) with the following ATM quality of service (QoS) traffic classes: unspecified bit rate (UBR), UBR+, real-time variable bit rate (VBR-rt), non-real-time VBR (VBR-nrt), available bit rate (ABR), and constant bit rate (CBR). Voice over IP (VoIP) and H.323 over ATM is supported over the WAN using the currently available onboard voice digital signal processors (DSPs), analog voice and fax network modules, and voice interface cards.
The network module has modular optics supporting the Cisco pluggable optical modules (POMs) and Cisco Small Form-Factor Pluggables (SFPs), simplifying the selection of network modules from six offerings to one. The SFPs support STM-1 framing standards over multimode, single-mode intermediate-reach, and single-mode long-reach fiber-optic interfaces. The module is a single-port module with LC-type connector. The single-mode SFPs combined with the ATM network module provide high-speed trunking for users with access to a fiber WAN, whereas multimode is ideal for connecting high-speed servers, switches, or hubs equipped with OC-3/STM-1 fiber connections.
Cisco IOS SP Services feature sets are required to support ATM. A maximum of one ATM OC-3 network module is recommended on the Cisco 3825 and Cisco 3925, and a maximum of two ATM OC-3 network modules are recommended on the Cisco 3845 and Cisco 3945

Figure 1. Cisco 3800 and 3900 Series ATM OC-3 Network Module

http://www.cisco.com/en/US/prod/collateral/routers/ps5855/images/0900aecd8036362f_null_null_null_08_05_05-1.jpg

Product Summary

The Network module supports three different SFPs, each with a different physical interface, support OC-3c/STM-1 multimode, OC-3c/STM-1 single-mode intermediate-reach, and OC-3c/STM-1 single-mode long-reach modes, however the module supports ATM OC-3 only. Table 1 lists the SFPs supported on the new network module.

Table 1. ATM OC-3 Network Module and Supported POMs and SFPs

Product Number

Product Description

NM-1A-OC3-POM

ATM OC3 module with single POM (SFP) slot

SM-NM-ADPTR

Network Module Adapter for SM Slot on Cisco 2900 and 3900 Series ISR

SFP-OC3-MM

OC3/STM1 SFP, Multi-mode fiber

SFP-OC3-IR1

OC3/STM1 SFP, Single-mode fiber, Intermediate Reach

SFP-OC3-LR1

OC3/STM1 SFP, Single-mode fiber, Long Reach (40km)

New Features

New features of the new network modules follow:

• RFC 1577 support for routing over ATM

• RFC 1483 support for multiple encapsulations over ATM

• ATM Forum User-Network Interface (UNI) 3.0, 3.1, and 4.0

• ATM permanent virtual circuits (PVCs) and switched virtual circuits (SVCs)

• LAN Emulation (LANE) 2.0

• Layer 2 per-VC queuing

• Up to 1024 simultaneous virtual circuits

• AAL5 ATM adaptation layer

• ATM service classes: UBR, UBR+, VBR-rt, VBR-nrt, ABR, and CBR (data only)

• Permanent virtual paths (PVPs)

• ATM bandwidth (resource) manager

• Multiprotocol over ATM (MPOA) client and server

• Multiprotocol Label Switching (MPLS)

• IETF Point-to-Point Protocol (PPP) over ATM

• Next Hop Resolution Protocol (NHRP)

• F4 and F5 operations and management (operation, administration, and maintenance [OAM]) cell support

• Interim Local Management Interface (ILMI)

System Requirements

• The new network module is supported on the Cisco 3825, Cisco 3845, Cisco 3925 and Cisco 3945

• SP Services feature sets of Cisco IOS Software Release 12.4(3) Mainline or above and 12.4(4)T or above are required.

• A maximum of one ATM OC-3 network module is supported on the Cisco 3825 and Cisco 3925 ; the maximum for the Cisco 3845 and Cisco 3945 is two.

• The system requires no additional flash or DRAM memory other than the Cisco IOS Software Release 12.4(3) Mainline and 12.4(4)T feature set specified minimum memory requirements.

• No slot dependent.

Table 2 gives support and orderability information for Cisco IOS Software.

Table 2. Cisco IOS Software Support and Orderability Rules

Product

Cisco IOS Software Version Required

Cisco IOS Feature Sets Required

Minimum DRAM Memory

Maximum Supported

Cisco 2600 Series, Including Cisco 2610, 2611, 2620, 2621, 2650, 2651, and 2691 Multiservice Platforms and Cisco 2610XM, 2611XM, 2620XM, 2621XM, 2650XM, and 2651XM Multiservice Routers

Not supported

-

-

-

Cisco 2800 and 2900 Series, Including Cisco 2801, 2811, 2821, 2851, 2901, 2911, 2921 and 2951

Not supported

-

-

-

Cisco 3600 Series, Including Cisco 3620, 3640, and 3660 Multiservice Platforms

Not supported

-

-

-

Cisco 3700 Series, Including Cisco 3725 and 3745 Multiservice Access Routers

Not supported

-

-

-

Cisco 3825 Integrated Services Router

12.4(3) Mainline and 12.4(4)T

SP Services*

Same as 12.4(3) Mainline and 12.4(4)T Cisco IOS SP Services feature sets DRAM minimum memory requirements.

1

Cisco 3845 Integrated Services Router

12.4(3) Mainline and 12.4(4)T

SP Services*

Same as 12.4(3) Mainline and 12.4(4)T Cisco IOS SP Services feature sets DRAM minimum memory requirements.

2

Cisco 3925 Integrated Services Router **

15.0(1)M

Data License

Same as 15.0(1)M

1

Cisco 3945 Integrated Services Router **

15.0(1)M

Data License

Same as 15.0(1)M

2

* OC-3 ATM network modules are not supported in IP Base, IP Voice, Enterprise Base, and Advanced Security Feature Sets. ATM is supported in Advanced Services, Enterprise Services, and Advanced Enterprise Services feature sets.
** Support for the OC-3 ATM network modules in the 3925, and 3945 will be via the network module adapter card.
Table 3 gives ATM service category definitions, and Table 4 lists their attributes and guarantees.

Table 3. ATM Service Category Definitions

ATM Service Categories

Typical Use

UBR

Best-effort service intended for non-real-time bursty applications that do not require a guarantee of traffic characteristics such as bandwidth, cell delay, and cell delay variation.

UBR+

Provides a guaranteed frame rate (GFR) service with single leaky bucket algorithm; provides the ability to reserve UBR bandwidth minimum, or specify bandwidth maximum; similar to VBR in that it increases the minimum cell rate (MCR) when cell rate falls below the MCR.

VBR-rt and VBR-nrt

Intended for applications that have bursty traffic patterns but require a guarantee of some traffic parameters; a peak cell rate (PCR), sustained cell rate (SCR), and maximum burst size (MBS) can specify traffic parameters.

ABR

Employed to maximize bandwidth use of the ATM link by using congestion feedback notification (resource management cells); both PCR and MCR specify the ABR connection; the transmit rate of each connection is flow-controlled such that the rate is always between the user-specified values for a minimum and peak rate.

CBR

Intended for real-time applications such as Systems Network Architecture (SNA) traffic, voice, and video, which require a fixed bandwidth and low cell delay; CBR in initial release supports data only.

Table 4. ATM Service Category Attributes and Guarantees

Service Category

Traffic Description

Minimum Loss Cell Loss Ratio (CLR)

Delay Variance

Bandwidth

Use of Feedback Control

UBR

PCR

No

No

No

No

UBR+

PCR

Yes

No

No

No

VBR-rt

PCR, SCR, and MBS

Yes

Yes

Yes

No

VBR-nrt

PCR, SCR, and MBS

Yes

No

Yes

No

ABR

PCR, MCR+, and behavior parameters

Yes

No

Yes

Yes

CBR

PCR

Yes

Yes

Yes

No

Table 5 lists the ATM OC-3 LED's with their functions and color.

Table 5. ATM OC-3 Network Modules LED Description

ATM OC-3 LEDs

Function

Color

ENABLED

This LED indicates the ATM OC-3 network module has passed self-tests and is available to the router.

Green

RX CR

This LED indicates that a carrier signal is present.

Green

RX CL

This LED indicates that a cell was received.

Green

TX CL

This LED indicates that a cell was transmitted.

Green

RX ALM

This LED is an alarm indication signal.

Yellow

OC-3 ATM Physical Specifications

Table 6 gives specifications for the Cisco 3800 and 3900 Series ATM OC-3 Network Module.

Table 6. Product Specifications

Feature

Description

Dimensions (H x W x D)

1.6 x 7.10 x 7.2 in. (4.1 x 18.0 x 18.2 cm)

Weight

2 lb maximum (1 kg maximum)

Environmental Conditions

Operating temperature: 32 to 104°F (0 to 40°C)

Nonoperating temperature: -13 to 158°F (-25 to 70°C)

Relative Humidity

5 to 95%

Protocols Supported

All in Cisco IOS Software Release 12.4(3)

Cabling

LC-type connector

Network Interfaces

Compatible with all existing network modules and WICS supported by Cisco 2600/2691/3600/3700/3800/3900 routers

Regulatory Approvals

Product Safety

• UL 60950 (United States)
• CSA C22.2, No. 60950 (Canada)
• EN 60950 (European Union)
• AS/NZS 60950 (Australia and New Zealand)
• IEC 60950 (International)

Immunity

• EN300386
• EN55024/CISPR24
• EN50082-1

Emissions

• ICES-003 Class A
• EN55022 Class A
• CISPR22 Class A
• AS/NZS 3548 Class A
• VCCI Class A
• EN 300386
• EN61000-3-3
• EN61000-3-2

Network Management

The following MIBs are supported:

• ATM-MIB
• CISCO-AAL5-MIB
• CISCO-ATM-PVCTRAP-EXTN-MIB
• CISCO-BUS-MIB
• CISCO-IETF-ATM2-PVCTRAP-MIB
• CISCO-IETF-ATM2-PVCTRAP-EXTN-MIB
• CISCO-LECS-MIB
• CISCO-LES-MIB
• LAN -EMULATION-CLIENT-MIB
• SONET-MIB
• IF-MIB
• ENTITY-MIB

Figure 2. 155-Mbps ATM OC-3 Multimode Network Module

http://www.cisco.com/en/US/prod/collateral/routers/ps5855/images/0900aecd8036362f_null_null_null_08_05_05-2.jpg

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