<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div>Hi Amin,</div><div><br></div><div>1. Depending on implementation of cache you're using, longevity either defined by the traffic pattern or via Freshness parameter in Data packets (<a href="http://ndnsim.net/cs.html">http://ndnsim.net/cs.html</a>).</div><div><br></div><div>2. "Logical minimum" is zero nanoseconds, "logical maximum" is + infitinty</div><div><br></div><div>3. ContentStore policy can have full control over this value. That is, one policy can completely ignore Freshness parameter in Data packets (e.g., as it is with default policy) or use the exact value specified by the data producer (ns3::ndn::cs::Freshness::* ContentStores).</div><div><br></div><div>---</div><div>Alex</div><br><div><div>On Apr 24, 2014, at 3:31 AM, amin1431 <<a href="mailto:amin1431@yahoo.com">amin1431@yahoo.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><div style="background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt; position: static; z-index: auto;"><div>Dear Friends,</div><div><br></div><div>I have 3 questions regarding cached contents:</div><div><br></div><div>1- What is the default longevity value of contents in the cache?</div><div>2- What is the logical minimum and maximum value?</div><div>3- Can routers manipulate this value? Or is it assigned by producer?</div><div style="font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><br></div><div style="font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><br></div><div style="font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;">Best Regards,</div><div style="font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;">Armin</div></div></div></blockquote></div></body></html>