[tex-live] www.tug.org unreachable

Reinhard Kotucha reinhard.kotucha at web.de
Tue Dec 19 01:13:21 CET 2017

On 2017-12-18 at 23:32:12 +0100, Zdenek Wagner wrote:

 > 2017-12-18 23:22 GMT+01:00 Reinhard Kotucha <reinhard.kotucha at web.de>:

 >>     Can anybody tell me what * * * means in the output of
 >>     traceroute?

 > Traceroute tries "ping" to the target with limited TTL (time to
 > live). It starts with one hop, tries 3 times and then increases the
 > number of hops by one and tries again until it either reaches the
 > target or 30 hops. If set initially to 1 hop, the packet expires at
 > the very first router and its IP address is returned. With 2 hops
 > the IP packet gets on step further so this way you can trace the
 > whole way. * * * means that no reply packet was received which may
 > have one of two reasons:
 > 1. The router is configured not to reply for ping packet
 > 2. The router is unreachable
 > It is quite common to have * * * in the middle of a route but in
 > any cas you find the IP address of the furthest router that
 > responded.

Thank you Zdeněk


Reinhard Kotucha                            Phone: +49-511-3373112
Marschnerstr. 25
D-30167 Hannover                    mailto:reinhard.kotucha at web.de

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