qvno prashtash paketa da izleze prez eth1 s next hop ip address 192.168.0.1. ip steka se opitva da razbere na koj mac adres da go prati v direktno svyrzaniq ti lan t.k. 192.168.0.1 go nqma v arp tablicata za eth1, kernela prashta arp requesti prez eth1 qvno ne poluchava otgovori na arp-tata syotvetno ne se poqvqva arp entry v tablichkata mu za eth1 syotvetno ne moje da paketira ip paketa v ethernet frame adresiran do nexthop adresa, kojto v toq sluchaj syvpada s destination-a na paketa. syotvetno prashta na sebe si icmp host unreachable messages.
mnogo dylgo izrechenie stana, a :) vsichko tova mojeshe da go razberesh s edin syvsem obiknoven tcpdump -i eth1 -n, stiga da ne se strahuvashe da gledash packet dumpove :) BR, Boyan > -----Original Message----- > From: knight of darkness [mailto:[EMAIL PROTECTED] > Sent: Monday, March 31, 2003 9:45 AM > To: [EMAIL PROTECTED] > Subject: lug-bg: eth-та и чудесии > > > здравейте, > извинете че пак ви досаждам....обаче някой може ли да ми > помогне да си обясня това?: > # traceroute 192.168.0.3 > traceroute to 192.168.0.3 (192.168.0.3), 30 hops max, 38 byte packets > 1 192.168.0.1 (192.168.0.1) 2993.296 ms !H 2999.212 ms !H > 2996.280 ms !H > # > > # ping 192.168.0.3 > PING 192.168.0.3 (192.168.0.3): 56 octets data > > --- 192.168.0.3 ping statistics --- > 4 packets transmitted, 0 packets received, 100% packet loss > # > > # route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric > Ref Use Iface > 62.176.85.188 0.0.0.0 255.255.255.252 U 0 > 0 0 eth0 > 192.168.0.0 0.0.0.0 255.255.255.0 U 0 > 0 0 eth1 > 127.0.0.0 0.0.0.0 255.0.0.0 U 0 > 0 0 lo > 0.0.0.0 62.176.85.189 0.0.0.0 UG 1 > 0 0 eth0 > # > > # ifconfig > eth0 Link encap:Ethernet HWaddr 00:DD:10:00:64:FF > inet addr:62.176.85.190 Bcast:62.176.85.191 > Mask:255.255.255.252 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:5316 errors:0 dropped:0 overruns:0 frame:0 > TX packets:5412 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:100 > RX bytes:387175 (378.1 Kb) TX bytes:1281622 (1.2 Mb) > Interrupt:9 Base address:0x1c00 > > eth1 Link encap:Ethernet HWaddr 00:DD:10:00:64:0C > inet addr:192.168.0.1 Bcast:192.168.0.255 > Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:1506 errors:0 dropped:0 overruns:0 frame:0 > TX packets:115 errors:0 dropped:0 overruns:0 carrier:0 > collisions:27 txqueuelen:100 > RX bytes:150427 (146.9 Kb) TX bytes:7014 (6.8 Kb) > Interrupt:11 Base address:0x3800 > > lo Link encap:Local Loopback > inet addr:127.0.0.1 Mask:255.0.0.0 > UP LOOPBACK RUNNING MTU:16436 Metric:1 > RX packets:151 errors:0 dropped:0 overruns:0 frame:0 > TX packets:151 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:13560 (13.2 Kb) TX bytes:13560 (13.2 Kb) > # > > # !echo > echo 1 > /proc/sys/net/ipv4/ip_forward > # > > поздрави > > ---------------------- > Силна Анти-спам защита > 12MB Място за поща > SMS за нов емeйл и към двата оператора! > POP3/WAP Достъп > _________________________________________ > HOB БEЗПЛATEH AДPEC - http://mail.bg/new/ > > ============================================================== > ============== > A mail-list of Linux Users Group - Bulgaria (bulgarian linuxers). > http://www.linux-bulgaria.org - Hosted by Internet Group Ltd. > - Stara Zagora > To unsubscribe: http://www.linux-bulgaria.org/public/mail_list.html > ============================================================== > ============== > ============================================================================ A mail-list of Linux Users Group - Bulgaria (bulgarian linuxers). http://www.linux-bulgaria.org - Hosted by Internet Group Ltd. - Stara Zagora To unsubscribe: http://www.linux-bulgaria.org/public/mail_list.html ============================================================================
