Cisco MWR-1941-DC-2T1 Hardware Installation Guide - Page 18

IP-RAN Solution Implementation, Cell Site DCN Solution Implementation - mwr dc router

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Primary Uses of the MWR 1941-DC Router Chapter 1 Overview of the Cisco MWR 1941-DC Router IP-RAN Solution Implementation In an IP RAN solution, the MWR 1941-DC extends IP connectivity to the cell site and Base Transceiver Station (BTS). Through a FastEthernet interface to the BTS, provides bandwidth-efficient IP transport of voice and data bearer traffic, as well as maintenance, control, and signalling traffic, over the leased line backhaul network between the BTS and leased line termination and aggregation node via compression (cRTP/cUDP) and packet multiplexing (PPPmux and MLPPP). Figure 1-1 shows the placement of and connections for the MWR 1941-DC in an IP-RAN solution. Figure 1-1 MWR 1941-DC in an IP-RAN Solution 100BaseT Active pBTS Standby T1/E1 backhaul link to IP RAN aggregation node 65827 MWR 1900 IP BTS router pair In the IP-RAN solution, the BTS site consists of a pair of MWR 1941-DC routers. The pair of MWR 1941-DC routers provides for an active and standby router for redundancy. A failure of the active MWR 1941-DC causes the standby router to take over as the active router for the BTS site. Each pair of MWR 1941-DC routers at the BTS site is identical in hardware configuration. They connect to each other through the BTS via the Fast Ethernet interfaces. The individual backhaul links to an MWR 1941-DC router are cabled from a single T1/E1 termination block in the BTS, connecting to both the active and standby routers utilizing a "Y" cable. The redundancy design to control the active/standby transitions of the router pair leverages HSRP to control the relays on the VWIC-2MFT-T1-DIR (or VWIC-2MFT-E1-DIR) in each router to ensure that the relays on the active router are closed and the relays on the standby router are open to avoid double termination of the T1 (or E1). Cell Site DCN Solution Implementation With Cisco IOS Release 12.2(15)MC1a and later, the MWR 1941-DC can be used to extend the mobile operators data communications network (DCN) to the cell site, providing the ability to remotely manage radio and ancillary cell site equipment from the operations center. A Cell Site DCN minimizes the need to dispatch technicians for every problem that might occur by providing the ability to remotely perform the following types of tasks: • troubleshooting • diagnosis • repairs • control • upgrades • routine maintenance of the cell site devices A Cell Site DCN also provides IP connectivity to the cell site, enabling IP-related applications that facilitate operation support (for example, web camera for site surveillance, IP telephone for voice connectivity, and the LAN extension to the cell site to provide access to network applications and data, and access to the Internet and/or intranet). Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide 1-2 78-15827-06B0

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1-2
Cisco MWR 1941-DC Mobile Wireless Edge Router Hardware Installation Guide
78-15827-06B0
Chapter 1
Overview of the Cisco MWR 1941-DC Router
Primary Uses of the MWR 1941-DC Router
IP-RAN Solution Implementation
In an IP RAN solution, the MWR 1941-DC extends IP connectivity to the cell site and Base Transceiver
Station (BTS). Through a FastEthernet interface to the BTS, provides bandwidth-efficient IP transport
of voice and data bearer traffic, as well as maintenance, control, and signalling traffic, over the leased
line backhaul network between the BTS and leased line termination and aggregation node via
compression (cRTP/cUDP) and packet multiplexing (PPPmux and MLPPP).
Figure 1-1
shows the placement of and connections for the MWR 1941-DC in an IP-RAN solution.
Figure 1-1
MWR 1941-DC in an IP-RAN Solution
In the IP-RAN solution, the BTS site consists of a pair of MWR 1941-DC routers. The pair of
MWR 1941-DC routers provides for an active and standby router for redundancy. A failure of the active
MWR 1941-DC causes the standby router to take over as the active router for the BTS site.
Each pair of MWR 1941-DC routers at the BTS site is identical in hardware configuration. They connect
to each other through the BTS via the Fast Ethernet interfaces. The individual backhaul links to an
MWR 1941-DC router are cabled from a single T1/E1 termination block in the BTS, connecting to both
the active and standby routers utilizing a “Y” cable. The redundancy design to control the active/standby
transitions of the router pair leverages HSRP to control the relays on the VWIC-2MFT-T1-DIR (or
VWIC-2MFT-E1-DIR) in each router to ensure that the relays on the active router are closed and the
relays on the standby router are open to avoid double termination of the T1 (or E1).
Cell Site DCN Solution Implementation
With Cisco IOS Release 12.2(15)MC1a and later, the MWR 1941-DC can be used to extend the mobile
operators data communications network (DCN) to the cell site, providing the ability to remotely manage
radio and ancillary cell site equipment from the operations center.
A Cell Site DCN minimizes the need to dispatch technicians for every problem that might occur by
providing the ability to remotely perform the following types of tasks:
•
troubleshooting
•
diagnosis
•
repairs
•
control
•
upgrades
•
routine maintenance of the cell site devices
A Cell Site DCN also provides IP connectivity to the cell site, enabling IP-related applications that
facilitate operation support (for example, web camera for site surveillance, IP telephone for voice
connectivity, and the LAN extension to the cell site to provide access to network applications and data,
and access to the Internet and/or intranet).
Active
pBTS
MWR 1900 IP BTS router pair
100BaseT
T1/E1 backhaul link to
IP RAN aggregation node
Standby
65827