| /* @(#) $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 ! */ |
