On Sun, Mar 31, 2002 at 08:40:50PM +1200, Sahil Gupta - Net4U Limited wrote:
### He gets packet losses the moment they begin to download, he unfortunately pings "www.winz.co.nz" and "www.net4u.co.nz". While he pings www.net4u.co.nz he doesn't get any packet loss even while downloading, only thing when he jumps out of our network and onto the WWW he begins facing packet loss i.e. while pinging www.winz.co.nz
Check whether you can ping over the PVC with full MTU-sized packets as well as small ones. Try an "extended ping" on one of your ciscos and answer yes to "sweep range of sizes", and see if you notice a drop pattern for packets above a certain size. If you do, call Telecom and tell them to fix the PVC. If the PVC you have bought is implemented over an ATM network, and the ATM ingress queues are too shallow, you can start to get cells out of contract even before a single IP/FR/AAL5 frame has been sent. On such a network, the cell discard will mean that large packets are consistently dropped. Similar problems can occur with an interworking PVC where there is a big disparity in trunk sizes between the two ends of a PVC, and the fast end isn't rate-limiting. I saw something just like this the other day with an interworking PVC built between a customer's telecom frame relay trunk and an ATM-attached router at Xtra. Joe - To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog