Cisco MWR 1941-DC - 1941 Mobile Wireless Router Software Configuration Manual page 20

Primary Uses of the MWR 1941-DC Router
Figure 1-1
IP-RAN solution.
Figure 1-1
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 router 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
Cisco IOS Release 12.3(11)T does not support the Cisco IOS Cell Site DCN feature set (software image)
Note
for the MWR 1941-DC router.
In a Cell Site DCN, the MWR 1941-DC router can be used to extend a mobile operators DCN to the cell
site, providing the ability to manage radio and cell site equipment remotely from the operations center.
A cell site DCN minimizes the need to dispatch technicians for every problem that might occur at the
cell site by providing the ability to perform the following types of maintenance tasks remotely:
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Additionally, the MWR 1941-DC router cell site DCN implementation also provides IP connectivity to
the cell site, enabling the use of IP-related applications that provide operation support (for example, web
camera for site surveillance, IP telephone for voice connectivity, and LAN extension to the cell site to
provide remote access to network applications, data, and access to the Internet and/or intranet).
Cisco MWR 1941-DC Mobile Wireless Edge Router Software Configuration Guide
1-2
shows the placement of and connections for the MWR 1941-DC router implemented in an
MWR 1941-DC Router in an IP-RAN Solution
100BaseT
pBTS
MWR 1900 IP BTS router pair
troubleshooting
diagnosis
repairs
control
upgrades
routine maintenance of the cell site devices
Chapter 1
Active
Standby
Overview of the Cisco MWR 1941-DC Router
T1/E1 backhaul link to
IP RAN aggregation node
OL-11503-01