Don't have much to add other than Heath's response is pretty much what I would have said.
It really all depends on your business needs as well as policy, or standards you need to meet.... > Date: Sun, 3 Oct 2010 00:34:40 +0100 > Subject: Re: router lifetime > From: hj1...@gmail.com > To: fra...@genius.com > CC: nanog@nanog.org > > > How long do you keep a router in production? > > What is your cycle for replacement of equipment? > > Hi Franck > > It really depends on the type of network you are running, the rate at > which new features & bandwidth are required, and the availability of > software and hardware upgrades. Also, in a lot of cases it is vendor > driven - devices that are still very much in production are forced to > be replaced because of vendor product lifecycle and the phasing out of > support, even when serving their requirements well. > > > Care to elaborate a little more on your planned scenario? > > > Cheers > Heath >