joel jaeggli <joe...@bogus.com> writes: > There's literally no options in between. so a 1/10Gb/s TOR like the > force10 s60 might have 2GB of shared packet buffer, while an like an > arista 7050s-64 would have 9MB for all the ports, assuming you run it > as all 10Gb/s rather than 100/1000/10000/40000 mixes of ports it can > cut-through-forward to every port which goes a long way toward > ameliorating your exposure to shallow buffers.
Why does cut-through help so much? In theory it should save precisely one packets worth of memory, i.e. around 9kB per port. 500kB extra buffer for the whole 50-port switch does not seem like a lot. Lots of people say that cut-through helps prevents packet loss due to lack of buffer, so something more complicated must be happening. /Benny _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
