North American Network Operators Group

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Re: Packet Loss

  • From: Alex Bligh
  • Date: Thu Dec 14 14:37:44 2000

[email protected] said:
> I'll speculate that it occurs when packets destined for a destination
> do
> not get there.  Most people see it via dropped ping packets..

> What ping really tells you is that either the packets from A to B are
> being lost or those from B to A are being lost.

Or that B is (perhaps deliberately - filtering ICMP echo or
ratelimiting echo response) not responding to the ICMP echo
request. This happens in Real Life (tm).

(pedantic: - or that A is discarding them as opposed to transmitting
them or ignoring the responses on receipt both of which have
been known to happen in badly configured NMS situations).

-- 
Alex Bligh
VP Core Network, XO Communications - http://www.xo.com/
(formerly Nextlink Inc, Concentric Network Corporation
GX Networks, Xara Networks)