Cisco 3825 - Manual (Page 16)

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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router
Cisco IOS Software Features
Figure 1-4 Example of Cisco 3825 Router in a Cell Site POP
Cisco IOS Software Features
There is one version of software available for the Cisco 3825 router. This version of the software is
required for implementing the Cisco 3825 router in a Radio Access Network-Optimization (RAN-O)
configuration.
Software features for the RAN-O Implementation
The software required for implementing the Cisco 3825 router consists the Cisco IOS software running
on the MIPs-based portion of the Cisco 3825 router hardware.
Cisco IOS software functions added to the Cisco 3825 router for the RAN-O implementation include:
• Redundancy logic—For monitoring Hot Standby Router Protocol (HSRP) information to determine
the active and standby router and control T1 termination.
• Failover logic—To force a switchover for hardware failures or an over-temperature condition.
• Relay control—To open and close the T1/E1 interfaces on the active and standby routers.
• Diagnostic functions—To monitor the “health” of the standby Cisco 3825 router.
GSM/GPRS/
EDGE BTS
UMTS Node B
(R4/R99)
BSC
RNC
T1/E1
Cell Site Access Network BSC/RNC Site Mobile
Internet
Edge
Optimized Abis and lub over IP
Cisco
MWR
ATM
(AAL2/AAL5)
TDM
TDM
ATM
Cisco
ONS 15454
203233