01-14-2019 02:05 AM - edited 03-05-2019 11:11 AM
I am trying to figure out what is the maximum supported NAT table entries for this EOL Cisco 7301 router. Yes, I know its an old hardware but it still works. The Datasheet shows 16k for 12.2(13)B. I believe this count refers to the BB subscribers supported but not for NAT. Can anyone tell me how to figure out the max supported NAT entries on this router (NAT Overload)? I am running version Cisco IOS 15.2(4)S6 (ADVENTERPRISEK9)
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01-14-2019 02:17 AM
Hello,
there used to be a global configuration command 'ip nat translation max-entries' which should tell you what the upper limit is.
That said, it is difficult to give a hard limit, as that depends on what else is configured on your device, and how much memory you have. A single NAT translation uses about 312 bytes in DRAM. The 7301 supports up to 1Gigabit of DRAM, so in theory, if you have that much DRAM installed, it would support 400,000 NAT entries...
01-14-2019 02:17 AM
Hello,
there used to be a global configuration command 'ip nat translation max-entries' which should tell you what the upper limit is.
That said, it is difficult to give a hard limit, as that depends on what else is configured on your device, and how much memory you have. A single NAT translation uses about 312 bytes in DRAM. The 7301 supports up to 1Gigabit of DRAM, so in theory, if you have that much DRAM installed, it would support 400,000 NAT entries...
01-14-2019 03:01 AM
01-14-2019 03:36 AM
If you have 1GB Ram what @Georg Pauwen was said correct. again i have not seen that many translation i have not seen in real time. until it is Service provider environment.
01-14-2019 06:51 AM
01-14-2019 07:00 AM
01-14-2019 07:12 AM
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