---

Fik lige denne type fejl-meddelelser i dag :

[root@picasso root]# traceroute login.dkuug.dk
traceroute to login.dkuug.dk (195.215.30.34), 30 hops max, 38 byte packets
1 gateway.dmznet.dassic.com (10.0.3.1) 0.780 ms 0.745 ms 0.707 ms
Icmp checksum is wrong
2 130.Red-80-59-188.pooles.rima-tde.net (80.59.188.130) 55.240 msIcmp
checksum is wrong
54.450 msIcmp checksum is wrong
59.534 ms
Icmp checksum is wrong
3 177.Red-80-58-80.pooles.rima-tde.net (80.58.80.177) 57.877 msIcmp
checksum is wrong
57.731 msIcmp checksum is wrong
55.480 ms
Icmp checksum is wrong
4 117.Red-80-58-74.pooles.rima-tde.net (80.58.74.117) 60.284 msIcmp
checksum is wrong
57.042 msIcmp checksum is wrong
55.422 ms
Icmp checksum is wrong

..... o.s.v.


Jeg kunne ikke lige finde nogen dokumentation på hvad der er galt. Nogen der
kan give en forklaring ???


/Jesper

---

"Jesper Frank Nemholt" <jfn@dassic.com> wrote in message
news:a1vlk9$qae$1@sunsite.dk...
> Fik lige denne type fejl-meddelelser i dag :
>
> [root@picasso root]# traceroute login.dkuug.dk
> traceroute to login.dkuug.dk (195.215.30.34), 30 hops max, 38 byte packets
> 1 gateway.dmznet.dassic.com (10.0.3.1) 0.780 ms 0.745 ms 0.707 ms
> Icmp checksum is wrong
> 2 130.Red-80-59-188.pooles.rima-tde.net (80.59.188.130) 55.240 msIcmp
> checksum is wrong
> 54.450 msIcmp checksum is wrong
> 59.534 ms

....og svaret fandt jeg selv i help funktionen i routeren :

Command-> traceroute ?
----------------------------------------------------------------------------
usage: traceroute <IP Address | hostname>
----------------------------------------------------------------------------
This command traces the routes to the specified
destination address. The command accepts the IP address in
that you want to trace the route to, in dotted decimal notation.
If DNS is enabled, and can translate the hostname into an IP
address, you can specify the hostname on the command line also.
In the output displayed, the first IP address shown is the first
hop away from the router. The second one is the next hop, etc.
If a firewall is encountered, it may display asterisks.

NOTE: If NAPT is enabled on the router, the traceroute command
cannot be used on an IP address that is out on the WAN. With
NAPT enabled, the ICMP messages used by traceroute can not get
back to the router. The result is that traceroute will not
return anything for the WAN IP address.


/Jesper