NAT IPv4 or CGN ROUTER ASR9k

[ares]

Dears, 

I want to make NAT or CGN "IPv4" in the Router ASR 9k but I cannot. 

please help me how I make NAT? give me an example 

System image file is "bootflash:disk0/asr9k-os-mbi-5.1.2/0x100000/mbiasr9k-rp.vm"

cisco ASR9K Series (P4040) processor with 8388608K bytes of memory.
P4040 processor at 1500MHz, Revision 2.0
ASR-9001 Chassis

iosxr-security, V 5.1.2[Default], Cisco Systems, at disk0:iosxr-security-5.1.2
Built on Wed Apr 30 18:55:22 
By iox-lnx-004 in /auto/srcarchive7/production/5.1.2/all/workspace for pie

asr9k-k9sec-supp, V 5.1.2[Default], Cisco Systems, at disk0:asr9k-k9sec-supp-5.1.2
Built on Wed Apr 30 18:55:22

[Aleksandar Vidakovic · Accepted solution]

IPv4 CGN implementation on ASR9k requires a A9K-VSM-500 line card. If you are looking for a NAT implementation that does not require a VSM, you can consider MAP-T or MAP-E. Exception packets would be dropped without a VSM. Please take a more recent EMR release instead of 5.1.2. Our suggestion is explained here: https://community.cisco.com/t5/service-providers-documents/ios-xr-release-strategy-and-deployment-recommendation/ta-p/3165422.