▁enough ▁for ▁the ▁ 3 5 ▁bytes , ▁ 2 8 0 ▁bits , ▁of ▁A CK ▁messages ▁generated ▁by ▁the ▁remote ▁host . ▁ ▁In ▁this ▁case , ▁the ▁spo of ing ▁allowed ▁the ▁sending ▁mode m ▁to ▁continue ▁sending ▁packets ▁as ▁fast ▁as ▁it ▁could . ▁At ▁the ▁same ▁time , ▁the ▁mode m ▁on ▁the ▁remote ▁receiving ▁end ▁dropped ▁the ▁A CK ▁packets ▁being ▁generated ▁by ▁the ▁local ▁computer ' s ▁software , ▁keeping ▁the ▁back channel ▁clear . ▁Since ▁the ▁channel ▁efficiency ▁only ▁became ▁a ▁major ▁problem ▁at ▁spe eds ▁over ▁ 2 4 0 0 ▁bit / s , ▁and ▁mode ms ▁able ▁to ▁run ▁faster ▁than ▁that ▁typically ▁had ▁significant ▁processing ▁power ▁anyway , ▁protocol ▁spo of ing ▁was ▁mostly ▁associated ▁with ▁these ▁higher - speed ▁systems . ▁ ▁TCP ▁spo of ing ▁TCP ▁connections ▁may ▁suffer ▁from ▁performance ▁limitations ▁due ▁to ▁ins u fficient ▁window ▁size ▁for ▁links ▁with ▁high ▁band width - delay ▁product , ▁and ▁on ▁long - delay ▁links ▁such ▁as ▁those ▁over ▁G E O ▁sat ell ites , ▁TCP ' s ▁slow - start ▁algorithm ▁significantly ▁del ays ▁connection ▁startup . ▁ ▁A ▁spo of ing ▁router ▁termin ates ▁the ▁TCP ▁connection ▁locally ▁and ▁transl ates ▁the ▁TCP ▁to ▁protocol s ▁tail ored ▁to ▁long ▁del ays ▁over ▁the ▁satellite ▁link ▁such ▁as ▁X TP . ▁ ▁R IP / S AP ▁spo of ing ▁S AP ▁and ▁R IP ▁period ically ▁broadcast ▁network ▁information ▁even ▁if ▁routing / service ▁tables