US Robotics USR2410 Manual de usuario descargar pdf (Pagina 76)

router_class :: IPClassifier(dst host extern,dst host me, -);

//classify if the router packets are icmp

icmp_r_packet_classifier :: IPClassifier (icmp type echo,icmp type echo-reply, proto

icmp, -);

icmp_r2_packet_classifier :: IPClassifier (icmp type echo,icmp type echo-reply, proto

icmp, -);

//non-grid device

extern_dev :: GatewayDevice(eth0);

// ARP MACHINERY for non-grid device

arp_class :: Classifier(12/0806 20/0001, 12/0806 20/0002, 12/0800, -);

// ARP Querier

//arpq :: ARPQuerier(extern);

extern_dev -> arp_class;

arp_class[0] -> ARPResponder(extern) //respond to ARP queries

-> extern_dev;

//arp_class[1] -> [1]arpq;

arp_class [1] -> Discard;

//packets from output 2 are data packets (non-ARP). They are dealt with below.

arp_class[3] -> Discard; //discard unrecognized packets

// REWRITERS for NAT

IPRewriterPatterns(to_world_pat extern 50000-65535 - -,

to_intern_pat me 50000-65535 - -

);

rewriter :: IPRewriter(// internal traffic

pattern to_world_pat 0 1,

// external traffic

pattern to_intern_pat 1 0,

//pass through packets from internal

//to check for previous routes

pass 2,

//pass through packets from external

//to check for previous routes

pass 3

);

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US Robotics USR2410 Manual de usuario Pagina 76