CHAPTER
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Cisco MWR 1900 Mobile Wireless Edge Router Software Configuration Guide
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Overview of the MWR 1900The MWR 1900 Mobile Wireless Edge Router is a networking pla tform optimized for use in mobile
wireless networks. It extends IP connectivity to the cell site and Base Transceiver Station (BTS), and
through a Fast Ethernet 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). It supports a limited set of interfaces and
protocols, but offers high performance at a low cost while meeting the critical requirements for
deployment in cell sites, including small size, extended operating temperature range, high availability,
and DC input power flexibility.
Benefits
The MWR 1900 router is designed to be used at a cell site as part of an IP-RAN solution. Figure 1-1
shows the placement of and connections for the MWR 19 00 for this application.
Figure 1-1 MWR 1900 in an IP-RAN Solution
In the IP-RAN solution, the BTS site consists of a pair of MWR 1900 routers. The pair of MWR 1900s
provides for an active and standby router for redundancy. A failure of the active MWR 1900 causes the
standby router to take over as the active router for the BTS site.
Each pair of MWR 1900 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
1900 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
Active
pBTS
MWR 1900 IP BTS router pair
100BaseT
T1/E1 backhaul link to
IP RAN aggregation node
Standby
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