6 use Data::Dump qw(dump);
8 my $dir="/dev/shm/snmpbulkwalk";
13 @dumps = glob("$dir/*") unless @dumps;
17 $mac =~ s/^([0-9a-f]):/0$1:/i;
18 while ( $mac =~ s/:([0-9a-f]):/:0$1:/ig ) {};
19 $mac =~ s/:([0-9a-f])$/:0$1/i;
23 foreach my $file ( @dumps ) {
25 open(my $fh, '<', $file);
26 my $sw = $file; $sw =~ s/^.*\///;
29 if ( m/^SNMPv2-MIB::(sysName|sysDescr)\.0 = STRING: (.+)/ ) {
30 $stat->{$sw}->{$1} = $2;
32 } elsif ( m/^(IF-MIB)::(ifPhysAddress)\.0 = (\w+): (.+)/ ) {
33 my ($name,$oid,$type,$value) = ($1,$2,$3,$4);
34 #$value =~ s/\(\d+\)$// if $type eq 'INTEGER';
35 $stat->{$sw}->{$name}->{$oid} = $value;
37 } elsif ( m/^(IF-MIB)::(ifPhysAddress)\[(\d+)\] = (\w+): (.+)/ ) {
38 my ($name,$oid,$i,$type,$value) = ($1,$2,$3,$4,$5);
39 #warn "# $sw ",dump($name,$oid,$i,$type,$value),$/;
40 #$stat->{$sw}->{$name}->{$oid}->[$i] = $value;
41 $stat->{_mac2sw}->{$value} = $sw;
42 } elsif ( m/^BRIDGE-MIB::dot1dTpFdbPort\[STRING: ([^\]]+)\] = INTEGER: (\d+)/ ) {
43 my ( $mac, $port ) = ($1,$2);
44 push @{ $stat->{_sw_mac_port_vlan}->{$sw}->{$mac}->{$port} }, '';
45 } elsif ( m/^Q-BRIDGE-MIB::dot1qTpFdbPort\[(\d+)\]\[STRING: ([^\]]+)\] = INTEGER: (\d+)/ ) {
46 my ( $vlan, $mac, $port ) = ($1,$2,$3);
47 push @{ $stat->{_sw_mac_port_vlan}->{$sw}->{$mac}->{$port} }, $vlan;
50 #warn "# $sw ",dump( $stat->{$sw} );
52 #warn "# stat = ",dump($stat);
54 open(my $fh, '>', '/dev/shm/mac2sw');
55 foreach my $mac ( keys %{ $stat->{_mac2sw} } ) {
56 print $fh $mac, " ", macfmt( $stat->{_mac2sw}->{$mac} ), "\n";
59 my $s = $stat->{_sw_mac_port_vlan};
60 foreach my $sw ( keys %$s ) {
61 foreach my $mac ( keys %{ $s->{$sw} } ) {
62 if ( my $mac_name = $stat->{_mac2sw}->{ $mac } ) {
63 next if $sw eq $mac_name; # mikrotik seems to see itself
64 foreach my $port ( keys %{ $s->{$sw}->{$mac} } ) {
65 #$stat->{_sw_port_sw}->{$sw}->{$port}->{$mac_name} = $s->{$sw}->{$mac}->{$port};
66 push @{ $stat->{_sw_port_sw}->{$sw}->{$port} }, $mac_name;
72 warn "# _sw_port_sw = ",dump($stat->{_sw_port_sw});
74 open(my $dot, '>', '/tmp/snmp-topology.dot');
75 print $dot "digraph topology {\n";
77 my $s = $stat->{_sw_port_sw};
83 my $u; $u->{$_}++ foreach @visible;
84 @visible = sort keys %$u;
89 my @visible = uniq(@_);
90 @visible = grep { ! exists $stat->{_found}->{$_} } @visible;
97 my @visible = uniq_visible(@_);
98 warn "# to_later $sw $port visible = ", $#visible + 1, "\n";
99 $later->{$sw}->{$port} = [ @visible ];
104 #warn "## s = ",dump($s);
105 foreach my $sw ( sort keys %$s ) {
107 #warn "## $sw s = ",dump($s->{$sw}),$/;
109 my @ports = sort { $a <=> $b } uniq( keys %{ $s->{$sw} } );
111 foreach my $port ( @ports ) {
112 warn "## $sw $port => ",join(' ', @{$s->{$sw}->{$port}}),$/;
114 if ( $#ports == 0 ) {
115 my $port = $ports[0];
116 #print "$sw $port TRUNK\n";
117 push @{$stat->{_trunk}->{$sw}}, $port; # FIXME multiple trunks?
118 #warn "## _trunk = ",dump( $stat->{_trunk} ).$/;
120 my @visible = uniq_visible( @{ $s->{$sw}->{$port} } );
121 to_later( $sw, $port, @visible );
125 foreach my $port ( @ports ) {
126 my @visible = uniq_visible( @{ $s->{$sw}->{$port} } );
127 warn "### $sw $port visible=",dump(\@visible),$/;
129 if ( $#visible == 0 ) {
130 warn "++++ $sw $port $visible[0]\n";
131 #print "$sw $port $visible[0]\n";
132 print $dot qq{ "$sw" -> "$visible[0]" [ label="$port" ];\n};
133 $stat->{_found}->{$visible[0]} = "$sw $port";
135 } elsif ( @visible ) {
136 to_later( $sw, $port, @visible );
138 warn "#### $sw $port doesn't have anything visible\n";
142 warn "## _found = ",dump( $stat->{_found} ),$/;
145 warn "NEXT later = ",dump($later),$/;
148 my $d = dump($later);
149 if ( $d eq $last_later ) {
150 warn "FIXME later didn't change, last\n";
161 warn "FINAL _found = ",dump( $stat->{_found} ),$/;
162 warn "FINAL _trunk = ",dump( $stat->{_trunk} ),$/;
164 foreach my $sw ( keys %{ $stat->{_found} } ) {
165 printf "%s -> %s %s\n", $stat->{_found}->{$sw}, $sw, uniq(@{ $stat->{_trunk}->{$sw} });