| /* Cisco IGRP definitions */ |
| |
| /* IGRP Header */ |
| |
| struct igrphdr { |
| #ifdef WORDS_BIGENDIAN |
| u_int ig_v:4; /* protocol version number */ |
| u_int ig_op:4; /* opcode */ |
| #else |
| u_int ig_op:4; /* opcode */ |
| u_int ig_v:4; /* protocol version number */ |
| #endif |
| u_char ig_ed; /* edition number */ |
| u_short ig_as; /* autonomous system number */ |
| u_short ig_ni; /* number of subnet in local net */ |
| u_short ig_ns; /* number of networks in AS */ |
| u_short ig_nx; /* number of networks ouside AS */ |
| u_short ig_sum; /* checksum of IGRP header & data */ |
| }; |
| |
| #define IGRP_UPDATE 1 |
| #define IGRP_REQUEST 2 |
| |
| /* IGRP routing entry */ |
| |
| struct igrprte { |
| u_char igr_net[3]; /* 3 significant octets of IP address */ |
| u_char igr_dly[3]; /* delay in tens of microseconds */ |
| u_char igr_bw[3]; /* bandwidth in units of 1 kb/s */ |
| u_char igr_mtu[2]; /* MTU in octets */ |
| u_char igr_rel; /* percent packets successfully tx/rx */ |
| u_char igr_ld; /* percent of channel occupied */ |
| u_char igr_hct; /* hop count */ |
| }; |
| |
| #define IGRP_RTE_SIZE 14 /* don't believe sizeof ! */ |