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(Please Help) 7606-S NAT Performance

Dear All Expert and Cisco Systems.

 

I need to ask something related with C7600 Hardware performance during using NAT.

As i know, NAT feature is being operated by hardware assisted like this information (http://www.cisco.com/c/en/us/products/collateral/routers/7600-series-routers/product_data_sheet0900aecd8057f3b6.html).

 

Acutually i wonder even C7600 is supporting NAT by hardware assisted, this can make any issue or make lower performance by handling NAT in our infra. In my opinion NAT size per session is 312bytes.

 

I will make NAT(4 to 4) environment as below for our infra structure due to shortage of public ip address.

* C7606-S will handle Private IP - 15,000 

* C7606-S will have Public IP - 1,500

* Total number of C7606-s - two chassis (one for main, other one for backup)

 

Q1. In this case, our system's capacity for NAT is good enough?

Q2. or need to make some change or upgrade?

Q3. Which equipment will control and handle NAT packet from this chassis (Supervisior engine or PFC or DFC or DRAM)?

 

 

-Our System Spec of C7606-S-

1. Chassis : C7606-S

2. SUP : VS-S2T-10G-XL

3. Memory spec - same as below.

MEM-C6K-INTFL1GB  Internal 1G Compact Flash  1
VS-F6K-PFC4XL  Cat 6k 80G Sys Daughter Board Sup2T PFC4XL  1
VS-S2T-10G-XL  Cat 6500 Sup 2T with 2x10GbE and 3 x 1GbE with MSFC5 PFC4XL  1
VS-SUP2T-10G  Catalyst 6500 Supervisor Engine 2T Baseboard  1
MEM-SUP2T-4GB  4G DRAM Memory Total for Sup2T and Sup2TXL  (2G + 2G) - UPGR  1
MEM-C6K-CPTFL2GB  Catalyst 6500 Compact Flash Memory 2GB  1
S2TAEK9-15101SY   Cisco CAT6000-VS-S2T IOS ADV ENT SERV FULL ENCRYPT   1
IO Modules  
WS-X6824-SFP-2T  Catalyst 6500 24-port GigE Mod: fabric-enabled with DFC4  1
WS-F6K-DFC4-A  Cat 6k 80G Sys Daughter Board  DFC4A for ABA Cards  1
WS-X6824-SFP  24 port 1G SFP based Baseboard  1
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