General

Router C887VA-K9 is not coming up after reload, while below static nat configuration command is present in startup-config. ip nat inside source static tcp x.x.x.x yyyy x.x.x.x yyyy extendable Device is completing boot process and getting hang. To get the device back, need to pass the startup-config from rommon mode.

Symptom

Router is getting hang after reload when using static NAT configuration line as below: ip nat inside source static tcp 1 extendable

Conditions

Below static NAT configuration line saved in startup-config ip nat inside source static tcp extendable

Workaround

Use dynamic rule or static rule without specific tcp/udp entry rule as of now.

Further Problem Description