Currently our large scale access layer is 50% 6509e's & 50% 4507 layer 2 switches. I received enough surplus 6509e's that I can replace all of the 4507s. Just would have to fund upgrading eletrical in the IDF's and purchase some additional line cards. The 4507's are working fine for now. Are there any good reasons to upgrade to all
6509e's versus leaving the 4507's in place? Are the 4507's nearing end of life?