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