US Robotics USR2410 Manual do Utilizador descarregar pdf (Página 77)

// Rewriting rules for ICMP packets

irw :: ICMPPingRewriter(extern, -);

// Rewriting rules for ICMP error packets

ierw :: ICMPRewriter(rewriter irw);

//output path for packets destined for the non-grid network

ip_to_extern :: GetIPAddress(16)

-> CheckIPHeader

-> EtherEncap(0x0800, extern:eth, extern_next_hop:eth)

-> extern_dev;

//ip_to_extern :: GetIPAddress(16)

// -> CheckIPHeader

// -> [0]arpq

// -> extern_dev;

rewriter[3]->ip_to_extern_class :: IPClassifier(dst host extern,dst host me, -);

ip_to_extern_class[0]->to_host_encap; //packets addressed to the router

ip_to_extern_class[1]->to_host_encap; //packets addressed to the router

ip_to_extern_class[2]->[0]rewriter; //packets for the outside

rewriter[0] -> ip_to_extern;

rewriter[2] -> ip_to_grid_class :: IPClassifier(dst host extern,dst host me, -);

ip_to_grid_class[0]->to_host_encap; //packets addressed to the router

ip_to_grid_class[1]-> to_host_encap;

ip_to_grid_class[2]-> [1]rewriter; //packets addressed to another machine go to

the grid mesh network

rewriter[1] -> ip_demux;

//ICMP Ping packets:

irw[0] -> ip_to_extern;

irw[1] -> ip_demux;

//OTHER ICMP packets

ierw[0] -> ip_demux;

ierw[1] -> to_host_encap; //packets that were not re-written

//FILTER PACKETS FROM THIS ROUTER

router_class [0]->icmp_r2_packet_classifier;

router_class [1]-> icmp_r_packet_classifier;

router_class [2]-> ip_input; //other packets

icmp_r_packet_classifier[0] -> to_host_encap; // icmp ping

icmp_r_packet_classifier[1] -> ip_input; //icmp ping reply

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US Robotics USR2410 Manual do Utilizador Página 77