Cisco 3825 Software Configuration Guide - Page 270
Asymmetric PWE3 Configuration
UPC - 746320981505
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Overview Appendix B Configuration Examples • A shorthaul interface is used to transfer GSM and UMTS traffic from the Base Transceiver Station (BTS)/Node-B to the Cisco 3825 router and from the Cisco 3825 router to the Base Station Controller/Radio Network Controller (BSC/RNC). The traditional shorthaul connections on the RAN-O devices are connected through the Cisco 2-port T1/E1-RAN interface cards. • Topology naming conventions such as, 3x2 and 4x3 are used to describe the type of deployment. The first number signifies the number of GSM/UMTS shorthaul interface connections while the second number signifies the number of multilink backhaul interface connections. In the case of a combined GSM/UMTS network, the conventional 3:2x2 can be used where :2 signifies the number of UMTS shorthaul interface connections. Asymmetric PWE3 Configuration The following is an example of an Asymmetric PWE3 configuration (see Figure B-1): Figure B-1 Asymmetric PWE3 Configuration 270636 ATM TDM BTS/Node B MWR_1 GE 0/0/0 (Uplink) GE 0/0/1 (Downlink) MWR_2 ATM TDM BSC/RNC PE_1 version 12.4 service timestamps debug datetime msec localtime service timestamps log datetime msec localtime no service password-encryption ! hostname MWR1 ! boot-start-marker boot-end-marker ! card type e1 0 0 card type e1 0 1 card type e1 0 2 card type e1 1 0 card type e1 1 1 logging buffered 2147483 ! no aaa new-model memory-size iomem 25 ! redundancy mode y-cable standalone ! network-clock-participate slot 1 network-clock-participate wic 0 network-clock-participate wic 1 network-clock-participate wic 2 network-clock-participate aim 1 network-clock-select 1 E1 1/1/1 Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide B-2 OL-15667-03