1、默認(rèn)32 ,可以在命令行修改
2、網(wǎng)速快慢
3、TTL是IP協(xié)議包中的一個(gè)值,它告訴網(wǎng)絡(luò),數(shù)據(jù)包在網(wǎng)絡(luò)中的時(shí)間是否太長(zhǎng)而應(yīng)被丟棄.TTL的最初設(shè)想是確定一個(gè)時(shí)間范圍,超過(guò)此時(shí)間就把包丟棄.由于每個(gè)路由器都至少要把TTL域一,TTL通常表示包在被丟棄前最多能經(jīng)過(guò)的路由器個(gè)數(shù).當(dāng)記數(shù)到0時(shí),路由器決定丟棄該包,并發(fā)送一個(gè)ICMP報(bào)文給最初的發(fā)送者.32字節(jié)的數(shù)據(jù)包如何修改呢，能具體給個(gè)例子嗎，以及運(yùn)行結(jié)果嗎C:\Documents and Settings\Administrator>ping/?Usage: ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v TOS][-r count] [-s count] [[-j host-list] | [-k host-list]][-w timeout] target_nameOptions:-t Ping the specified host until stopped. To see statistics and continue - type Control-Break; To stop - type Control-C.-a Resolve addresses to hostnames.-n count Number of echo requests to send.-l sizeSend buffer size.-f Set Don't Fragment flag in packet.-i TTL Time To Live.-v TOS Type Of Service.-r count Record route for count hops.-s count Timestamp for count hops.-j host-list Loose source route along host-list.-k host-list Strict source route along host-list.-w timeout Timeout in milliseconds to wait for each reply.C:\Documents and Settings\Administrator>ping -l 128 127.1Pinging 127.0.0.1 with 128 bytes of data:Reply from 127.0.0.1: bytes=128 time<1ms TTL=64Reply from 127.0.0.1: bytes=128 time<1ms TTL=64Reply from 127.0.0.1: bytes=128 time<1ms TTL=64Reply from 127.0.0.1: bytes=128 time<1ms TTL=64Ping statistics for 127.0.0.1:Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds:Minimum = 0ms, Maximum = 0ms, Average = 0msC:\Documents and Settings\Administrator>