Cisco Systems manual Hardware Features, MWR 1900 in an IP-RAN Solution

Chapter 1 Overview of the Cisco MWR 1900 Router

Hardware Features

Figure 1-1 MWR 1900 in an IP-RAN Solution

Active

100BaseT

Standby pBTS

MWR 1900 IP BTS router pair

T1/E1 backhaul link to

IP RAN aggregation node

65827

In the IP-RAN solution, the BTS site consists of a pair of MWR 1900 routers. The pair of MWR 1900 routers provides for an active and standby router for redundancy. A failure of the active MWR 1900 router 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 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).

Hardware Features

Figure 1-2shows the front of the router. Figure 1-3shows the back of the router.

Cisco MWR 1900 Mobile Wireless Edge Router Hardware Installation Guide

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