/* $NetBSD: igrp.h,v 1.1.1.2 2004/09/27 17:06:46 dyoung Exp $ */ /* @(#) Header: /tcpdump/master/tcpdump/igrp.h,v 1.6 2002/12/11 07:13:52 guy Exp (LBL) */ /* Cisco IGRP definitions */ /* IGRP Header */ struct igrphdr { u_int8_t ig_vop; /* protocol version number / opcode */ #define IGRP_V(x) (((x) & 0xf0) >> 4) #define IGRP_OP(x) ((x) & 0x0f) u_int8_t ig_ed; /* edition number */ u_int16_t ig_as; /* autonomous system number */ u_int16_t ig_ni; /* number of subnet in local net */ u_int16_t ig_ns; /* number of networks in AS */ u_int16_t ig_nx; /* number of networks ouside AS */ u_int16_t ig_sum; /* checksum of IGRP header & data */ }; #define IGRP_UPDATE 1 #define IGRP_REQUEST 2 /* IGRP routing entry */ struct igrprte { u_int8_t igr_net[3]; /* 3 significant octets of IP address */ u_int8_t igr_dly[3]; /* delay in tens of microseconds */ u_int8_t igr_bw[3]; /* bandwidth in units of 1 kb/s */ u_int8_t igr_mtu[2]; /* MTU in octets */ u_int8_t igr_rel; /* percent packets successfully tx/rx */ u_int8_t igr_ld; /* percent of channel occupied */ u_int8_t igr_hct; /* hop count */ }; #define IGRP_RTE_SIZE 14 /* don't believe sizeof ! */