Return-Path: william@bourbon.usc.edu Delivery-Date: Sun Nov 23 15:46:51 2008 X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on merlot.usc.edu X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.2.3 Received: from bourbon.usc.edu (bourbon.usc.edu [128.125.9.75]) by merlot.usc.edu (8.14.1/8.14.1) with ESMTP id mANNkpb6021248 for ; Sun, 23 Nov 2008 15:46:51 -0800 Received: from bourbon.usc.edu (localhost.localdomain [127.0.0.1]) by bourbon.usc.edu (8.14.2/8.14.1) with ESMTP id mANNj3ln027010 for ; Sun, 23 Nov 2008 15:45:03 -0800 Message-Id: <200811232345.mANNj3ln027010@bourbon.usc.edu> To: cs551@merlot.usc.edu Subject: Re: Project 2 Date: Sun, 23 Nov 2008 15:45:03 -0800 From: Bill Cheng Someone wrote: > If you receive a msg with a ttl of 0 you do not forward it, but would you > respond to it. In other words if the ttl is 0 does that mean the msg is not > examined at all? You should never receive a message with TTL of 0. If you get a message with TTL of 0, you can just drop it and pretend that you've never seen it. Recall that messages such as KeepAlive has a TTL of 1. After you've received it, you decrement TTL and get 0 and you don't forward it. -- Bill Cheng // bill.cheng@usc.edu