One of the first things a router does with an IP packet is decrement the
TTL by one. If that causes the TTL to be zero, the router drops the packet
and sends an ICMP Time Exceeded (type 11), TTL Expired (code 0) message.
Priscilla
At 04:33 PM 3/22/01, Zhiping Li wrote:
>hi,everyone
>We know th
hi,everyone
We know that when a trace begins from a host,
the TTL in the first packet is "1".
The default router will discard this packet,
and returns a ICMP error message.
But I remember that router discards
"packets with TTL=0".
Could anyone explain indeed how the router handle
the packet with
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