cisco MWR 2941-DC User Manual

Data Sheet

Cisco MWR 2941-DC Mobile Wireless Router

The Cisco® MWR 2941-DC Mobile Wireless Router sets the standard for cell-site investment protection of
Radio Access Network (RAN) backhaul for multiple generations of radio and media technology. By using
the Cisco MWR 2941-DC, operators can simplify and converge their current RANs with a compact, high­performance, and modular cell-site access platform, reducing operating costs and enhancing profit
opportunities.

RAN cell sites are places of transformation between mobile radio and mobile transport networks. Cost-effective RAN
backhaul requires the ability to simultaneously aggregrate the transport of traffic from both legacy and new­generation radios for specific and multiple transport options available at the cell site. The Cisco MWR 2941-DC is
designed to optimize this radio-to-transport transformation and provide scalable interfaces for existing radios and
transport networks as well as the new generation of 4G radios, microwave, and IP RAN transport networks.

Product Overview

The Cisco MWR 2941-DC Mobile Wireless Router (Figure 1) is a cell-site gateway specifically designed to clock,
aggregate, and backhaul mixed-generation RAN traffic. The Cisco MWR 2941-DC prioritizes and processes cell-site
voice, data, and signaling traffic as part of the Cisco Unified RAN Backhaul solution for reliable transport across any
available backhaul networks, including E1/T1, ATM, Carrier Ethernet, microwave, WiMAX, and satellite networks.
Custom designed for the cell site, the Cisco MWR 2941-DC features a small form factor, superior clocking, extended
operating temperatures, and cell-site DC input voltages. It includes a high-performance host processor joined with a
powerful dataplane network processing engine, a line-rate Level 2 switch, precise clocking and synchronization, and
comprehensive Cisco IOS® Software customized for RAN backhaul applications.

Figure 1. Cisco MWR 2941-DC Mobile Wireless Router

The primary benefits of Cisco Unified RAN Backhaul solutions with cell-site gateway include:

●

Line-rate cell-site traffic segmentation: Allows you to segment traffic for backhauling 2G traffic and 3G
voice over time-division multiplexing (TDM) infrastructure (T1/E1), while simultaneously using any available
high-speed broadband networks (for example, Carrier Ethernet) to backhaul High-Speed Packet Access
(HSPA) and Long-Term Evolution (LTE), Code Division Multiple Access (CDMA), Evolution-Data Optimized
(EVDO), and WiMAX data traffic

●

Cell-site aggregation and expansion: Aggregates multiple base stations through multiple TDM, Ethernet,
and IP interfaces

●

Pseudowire Emulation Edge to Edge (PWE3): Supports Global System for Mobile Communications (GSM),
CDMA, and Universal Mobile Telecommunications System (UMTS) traffic for high-capacity, low-cost RAN
transport

●

Quality assurance: Lets you apply quality of service (QoS) at the cell site for improved service-level
assurance, even over noisy microwave links

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●

Metro Ethernet support: Allows you to manage and operate in both a PWE3 and Carrier Ethernet
environment simultaneously by supporting line-rate Layer 2 Ethernet Operations, Administration, and
Maintenance (EOAM, including Connectivity Fault Management [CFM], Ethernet Local Management Interface
[E-LMI], and Ethernet in the First Mile [EFM]), Resilient Ethernet Protocol (REP), and QinQ

●

Cell-site operations support: Facilitates telemetry to cell sites for remote operations and network element
management of the ancillary cell-site equipment to reduce costly site visits and improve operational efficiency

●

Cell-site IP points of presence (POPs): Allows you to offer new revenue-generating IP services and
applications at every cell site

Hardware Overview

The Cisco MWR 2941-DC includes the following hardware features:

●

Sixteen integrated RJ-45 T1/E1 ports

●

Four integrated RJ-45 100/1000BASE-T ports

●

Two integrated 1000BASE-X Small Form-Factor Pluggable (SFP) ports

●

Built-in Layer 2 Gigabit Ethernet switch supporting line-rate traffic

●

One integrated 115.2-kbps combined console and auxiliary port

●

Two integrated high-speed WAN interface card (HWIC) slots that support select cards from the Cisco 2800
and 3800 Series Integrated Services Routers

●

Network processing engine for integrated hardware-accelerated network services

●

Clocking and synchronization complex for integrated Timing over Packet (ToP) features

●

Stratum 3 network clock

●

Common clock distribution across the chassis

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One external timing input (Building Integrated Timing Supply [BITS])

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One Pulse per Second (PPS) interface, 10-MHz interfaces, and one Time of Day (ToD) interface

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TDM backplane with DS-0 grooming and drop-and-insert

●

Extended operating temperature: -4 to 140°F (-20 to 60°C)

●

20 to 60 VDC (±) universal power supply

●

Support for dual A and B DC power feeds with a single Euro-Style 4-position connector

●

512 MB DRAM and 128 MB external compact flash memory

Data Sheet

Software Overview

The software for the Cisco MWR 2941-DC is customized for IP RAN transport and includes several Cisco IOS
Software features specifically developed for such applications. These features include Adaptive Clock
Recovery(ACR), IEEE 1588-2008, ITU-T Synchronous Ethernet (SynchE), and IETF ATM, TDM, and Ethernet
Pseudowire Emulation Edge to Edge (PWE3). Another important feature is Cisco ATM permanent virtual circuit
(PVC) routing, which provides the ability to route different types of 3G traffic over different types of backhaul media,
while providing load-balancing and backup paths.

The software available for the Cisco MWR 2941-DC supports Cisco IOS Software running on the host processor and
microcode running on the network processor to provide hardware acceleration to increase performance of PWE3
protocols, Multilink Point-to-Point Protocol (MLPPP), Multiprotocol Label Switching (MPLS), and ATM network
services such as ATM cell segmentation and reassembly (SAR), ATM Adaption Layer 0 (AAL0) for AAL2 voice and
data, AAL5, and Inverse Multiplexing over ATM (IMA) v1.0 and v1.1.

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Table 1 lists the major Cisco IOS Software features supported on the Cisco MWR 2941-DC.

Table 1. Cisco MWR 2941-DC Software Features

Features

Metro Ethernet Services

●

IEEE 802.3ah Ethernet in the First Mile (EFM)

●

IEEE 802.1q VLANs

●

IEEE 802.1q Tunneling (QinQ) with Layer 2 Tunneling Protocol (L2TP)

●

Ethernet over Multi Protocol Label Switching (EoMPLS): VLAN mode

●

Ethernet Local Management Interface (E-LMI)

●

IEEE 802.1ag Connectivity Fault Management (CFM)

●

IEEE 802.1ag Connectivity Fault Management (CFM) Extension for 1 + 1 Hot Standby

●

Ethernet Loopback (MAC Swap)

Pseudowire

●

Support for Multiprotocol Label Switching (MPLS) and User Datagram Protocol (UDP); UDP is supported for Circuit Emulation Service over Packet
Switched Network (CESoPSN) only

●

Pseudowire Setup and Maintenance using the Label Distribution Protocol (LDP) - RFC 4447

●

Structure-Agnostic Time Division Multiplexing (TDM) over Packet (SAToP) - RFC 4553

●

Encapsulation Methods for Transport of Asynchronous Transfer Mode (ATM) over MPLS Networks - RFC 4717

●

Pseudowire Emulation Edge-to-Edge (PWE3) ATM Transparent Cell Transport Service - RFC 4816

●

Structure-Aware Time Division Multiplexed (TDM) Circuit Emulation Service over Packet Switched Network (CESoPSN) - RFC 5086

●

Circuit Emulation Service over Packet Switched Network (CESoPSN) over UDP/IP

●

ATM PWE3 Redundancy

●

IETF ATM Pseudowire Emulation Edge to Edge (PWE3) over MPLS

●

Transparent Cell Transport Service/ATM Port Mode

●

ATM AAL5 Common Part Convergence Sublayer-Service Data Unit (CPCS-SDU) Mode

●

ATM N:1 (N = 1) virtual channel connection (VCC) cell mode and ATM N:1 (N = 1) virtual path (VP) Cell Relay Mode

●

ATM Port Cell Relay Service; ATM cell packing

●

IMA v1.0, 1.1, ATM SAR, ATM AAL0 (for AAL2 voice and data), AAL5, ATM Class of Service (CoS) features constant bit rate (CBR) and
unspecified bit rate (UBR), per virtual circuit queuing, and ATM PVC Routing

Layer 3 Services

●

Label Distribution Protocol (LDP) with Label Edge Router (LER) and Label Switch Router (LSR) support

●

Point-to-Point Protocol (PPP) and Multilink Point-to-Point Protocol (MLPPP)

●

Hardware Assisted Layer 3 VPN (L3VPN)

●

Dynamic Host Configuration Protocol (DHCP) and IP Control Protocol (IPCP)

●

Address and Control Field Compression (ACFC) and PPP Protocol Field Compression (PFC) for MLPPP

●

Layer 3 Multicast

●

Open Shortest Path First (OSPF)

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Border Gateway Protocol (BGP)

●

Intermediate System-to-Intermediate System (IS-IS)

IPv6

●

Addressing and Discovery

●

Manual IPv6 Interface Addressing

●

ICMPv6 (RFC 4443)

●

IPv6 Duplicate Address Detection (RFC 4429)

●

IPv6 Neighbor Discovery (RFC 4861)

●

IPv4/IPv6 Dual Stack

●

IPv6 Static Routing

●

OSPF for IPv6 (RFC 5340)

●

BFDv6 (RFC 5881)

●

BFDv6+Static

●

BFDv6+OSPF

●

IPv6 QoS for Classification, Marking, Prioritization, Queuing, Scheduling, and Shaping

●

Hardware assisted IPv6 data forwarding

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IPv6 over MPLS (6PE/6VPE)

QoS

●

IEEE 802.1p QoS

Data Sheet

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