HI!
I camp with 2 greyhounds, but we are lucky to have a camper to sleep in and the dogs sleep in there with us. I would not recommend tying him outside the tent. Depending on where you camp, you could have problems with wild animals. Racoons are almost always a camp problem and some could have rabies. Other animals that could be problems, again...depending where you are camping coule be bears and skunks. None of these would I want my dogs in contact with. If your tent is large enough, I would bring the crate and crate him with you in the tent. This would be the best thing to do. We bought 2 X-pens and put them together for during the day, outside. I'm not a big fan of tying a dog out anywhere, even if I'm with them, but I know alot of people do it with no problems.
Good luck and I hope you enjoy your camping out!
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Melody/PHFasDog

My furkids:
Shadow, Jadzia and Lyta.
Kira waiting at the bridge.
Dogs come into our lives, and too quickly go leaving pawprints on our hearts, and we will never be quite the same again.