US Robotics USR2410 Instrukcja Użytkownika Pobierz pdf (Strona 79)

VERBOSE true

);

grid_demux :: Classifier(19/03, // encapsulated (data) packets

19/02); // route advertisement packets

// handles IP packets with Grid data encapsulation

grid_data_demux :: IPClassifier(dst host me, // ip for us

dst net me/24, // ip for Grid network

-); //other packets

// dev0 = grid device

dev0 :: ToGridDev(ath0);

from_dev0 :: FromGridDev(ath0, me:eth)

from_dev0 [0] -> Paint(0) -> grid_demux

//linkstat stuff

from_dev0 [1] -> Paint(0) -> probe_cl :: Classifier(12/7ffe, 12/7ffd);

probe_cl [0] -> ls -> probe_switch :: Switch(-1) -> dev0;

probe_cl [1] -> ls2 -> probe_switch;

// support for traceroute

dec_ip_ttl :: TTLChecker -> dev0;

dec_ip_ttl [1] -> ip_demux;

grid_demux [0] -> CheckIPHeader( , 82) -> grid_data_demux;

grid_demux [1] -> nb -> dev0;

// arp stuff for grid device

// not needed in userlevel

arp_demux [1] -> Strip(14) -> router_class;

from_dev0 [2] -> ToHost(grid0);

// loopback packet sent by us, required on BSD userlevel

ip_demux [0] -> to_host_encap;

// forward packet sent by us

ip_demux [1] ->GetIPAddress(16)->CheckIPHeader-> GridEncap(me:eth, me:ip) -> dec_ip_ttl;

//Determine if this is an ICMP packet or a TCP/UDP packet

grid_data_demux [0] -> Strip(82) -> icmp_packet_classifier :: IPClassifier (icmp type

echo,icmp type echo-reply, proto icmp, -);

icmp_packet_classifier[0] -> irw; // icmp ping

icmp_packet_classifier[1] -> to_host_encap; //icmp ping reply to kernel

icmp_packet_classifier[2] -> to_host_encap; // other icmp

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US Robotics USR2410 Instrukcja Użytkownika Strona 79