September 2002
Intermediate to advanced
560 pages
13h 16m
English
book
VRRP: Increasing Reliability and Failover with the Virtual Router Redundance Protocol
by Ayikudy Srikanth, Adnan Adam Onart
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C.6. Building a Valid Data Packet to be Sent over Ethernet
/********************************************************* NAME : vrrp_build_dlt *********************************************************/ static void vrrp_build_dlt( vrrp_rt *vsrv, char *buffer, int buflen ) { /* hardcoded for ethernet */ struct ether_header * eth = (struct ether_header *)buffer; /* destination address —rfc1122.6.4*/ eth->ether_dhost[0] = 0x01; eth->ether_dhost[1] = 0x00; eth->ether_dhost[2] = 0x5E; eth->ether_dhost[3] = (INADDR_VRRP_GROUP >> 16) & 0x7F; eth->ether_dhost[4] = (INADDR_VRRP_GROUP >> 8) & 0xFF; eth->ether_dhost[5] = INADDR_VRRP_GROUP & 0xFF; /* source address —rfc2338.7.3 */ memcpy( eth->ether_shost, vrrp_hwaddr, sizeof(vrrp_hwaddr)); /* type */ eth->ether_type ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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