Cisco 3825 - GSM Only Configuration

B-55
Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Appendix B Configuration Examples
Overview
GSM Only Configuration
The standard GSM topology includes one or more shorthaul interface connections from the BTS to a
RAN-O device via separate T1/E1 connections. The RAN-O devices are connected back-to-back using
an MLPPP backhaul connection (two or more T1/E1 connections). At the BSC side, the RAN-O to BSC
connectivity is exactly like the BTS to RAN-O connections. In this scenario, only GSM traffic traverses
the topology (see
Figure B-8).
Figure B-8 GSM Only Configuration
MWR_A
!
card type E1 0 0
card type E1 0 1
!
!
redundancy
mode y-cable
standalone
!
network-clock-participate wic 0
network-clock-participate wic 1
network-clock-participate aim 1
network-clock-select 1 E1 0/0/1
!
ipran-mib snmp-access inBand
ipran-mib location cellSite
!
!
controller E1 0/0/0
framing NO-CRC4
clock source internal
channel-group 0 timeslots 1-31
!
controller E1 0/0/1
channel-group 0 timeslots 1-31
!
controller E1 0/1/0
framing NO-CRC4
clock source internal
channel-group 0 timeslots 1-31
!
!
class-map match-any llq-class
match ip dscp ef
!
!
policy-map llq-policy
BTS
MWR_A
GSM Only Configuration
S0/0/0
S0/1/0
Multilink1
10.10.10.1
Multilink1
10.10.10.2
S0/0/0
S0/1/0
MWR_B
BSC
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