Over the years I've noticed the network monitors pointing out various of our lower-end Catalyst switches (29xx, 35xx, 37xx) reporting transmit discards or receive discards. Since we have some gig uplinks on some 10/100 switches, obviously some of this is to be expected.
As time has gone by, we have gig uplinks to most all of our switches, and there are "more" discards as a result. My curiosity is over some switches showing "transmit" discards on the 10/100 ports, while others are showing "receive" discards on the gig uplinks. Most of our traffic is downstream, so I'd write this off to the 10/100s simply not keeping up. But what is the "difference" between the two? I'm guessing the receive discards are when the switch overall buffer capacity has been reached and there is no space to store additional incoming packets. But the transmits? Are there a "fixed" number of buffers per port, after which they register as transmit discards; or are the buffers truly shared? Not that I can fix the problem, just trying to get a better understanding :) Are "transmit" discards better than "received" ones? (Again, bearing in mind the traffic is primarily downstream; if it were more symmetric I'd expect different answers). Thanks :) Jeff _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
