Extendable command optional or needed?

phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
in CCNP
Came across a sample config on cisco.com and they used "extendable" at the end of the static nat mapping. I'm not sure when it is necessary to use that command. icon_question.gif

Same inside local, same inside global, just multiple ports.
ip nat inside source static tcp 192.168.1.10 80 67.23.239.61 80 extendable
ip nat inside source static tcp 192.168.1.10 443 67.23.239.61 443 extendable
ip nat inside source static tcp 192.168.1.10 8059 67.23.239.61 8059 extendable
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  • phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
    According to a TAC engineer that I was working with the other day, extendable is only needed when using route-map statements. Basically it lets a static mapping take precedence over dynamic nats.
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