Hi,
The Cisco 7606-S Router is an enhancement on the highly successful 6-slot chassis (Cisco 7606). This enhanced chassis delivers numerous design improvements, including:
++ Improved failover mechanisms in the hardware, which when paired with the proper Cisco IOS® Software image can achieve 100 ms failover
++ Ability to deliver higher power of up to 750W per slot
++ High-speed fan tray module with five speeds on a side-to-side airflow design
++ Better thermal flow measurement and management
The Cisco 7606-S chassis accommodates a broad selection of line cards supporting numerous applications, including:
++ SPAs and SIPs (Cisco 7600 Series SPA Interface Processor-200 [SIP-200], SIP-400, and SIP-600):
– Channelized T1/E1, Channelized T3, and Channelized OC-3/STM-1
– OC-3/STM-1, OC-12/STM-4, OC-48/STM-16 Packet over SONET/SDH (PoS), and OC-192/STM-64 PoS
– OC-3/STM-1 ATM, OC-12/STM-4 ATM, and OC-48/STM-16 ATM
– Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet
Also for specific feature comparison between two products, i would suggest you to refer the data sheet.
7606:
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http://www.cisco.com/en/US/prod/collateral/routers/ps368/ps371/product_data_sheet09186a0080088773_ps368_Products_Data_Sheet.html
7606-S:
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http://www.cisco.com/en/US/prod/collateral/routers/ps368/ps371/product_data_sheet0900aecd8057f3c8.html
Cheers
Somu
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