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"arpnip" on Airespace: use the controller's snooping on the

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IP addresses of its clients, plus the knowledge of the APs'
IP and ethernet MAC addresses, to arpnip.  This is useful
when there is communication (between controller and AP,
or between wireless and wired devices) that does not cross
routers.
This commit is contained in:
Bill Fenner
2010-03-23 17:58:30 +00:00
parent 2c84636b7f
commit 5b059e6286
1 changed files with 60 additions and 16 deletions
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76
Info/Airespace.pm
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@@ -85,16 +85,17 @@ $VERSION = '2.01';
'airespace_ess_aclname' => 'bsnDot11EssAclName',
# AIRESPACE-WIRELESS-MIB::bsnAPTable
'airespace_ap_mac' => 'bsnAPDot3MacAddress',
'airespace_ap_name' => 'bsnAPName',
'airespace_ap_ip' => 'bsnApIpAddress',
'airespace_ap_loc' => 'bsnAPLocation',
'airespace_ap_sw' => 'bsnAPSoftwareVersion',
'airespace_ap_fw' => 'bsnAPBootVersion',
'airespace_ap_model' => 'bsnAPModel',
'airespace_ap_serial' => 'bsnAPSerialNumber',
'airespace_ap_type' => 'bsnAPType',
'airespace_ap_status' => 'bsnAPAdminStatus',
'airespace_ap_mac' => 'bsnAPDot3MacAddress',
'airespace_ap_name' => 'bsnAPName',
'airespace_ap_ip' => 'bsnApIpAddress',
'airespace_ap_loc' => 'bsnAPLocation',
'airespace_ap_sw' => 'bsnAPSoftwareVersion',
'airespace_ap_fw' => 'bsnAPBootVersion',
'airespace_ap_model' => 'bsnAPModel',
'airespace_ap_serial' => 'bsnAPSerialNumber',
'airespace_ap_type' => 'bsnAPType',
'airespace_ap_status' => 'bsnAPAdminStatus',
'airespace_ap_ethermac' => 'bsnAPEthernetMacAddress',
# AIRESPACE-WIRELESS-MIB::bsnAPIfTable
'airespace_apif_slot' => 'bsnAPIfSlotId',
@@ -112,6 +113,7 @@ $VERSION = '2.01';
'airespace_sta_ess_idx' => 'bsnMobileStationEssIndex',
'airespace_sta_ssid' => 'bsnMobileStationSsid',
'airespace_sta_delete' => 'bsnMobileStationDeleteAction',
'airespace_sta_ip' => 'bsnMobileStationIpAddress',
# AIRESPACE-WIRELESS-MIB::bsnUsersTable
'airespace_user_name' => 'bsnUserName',
@@ -148,15 +150,16 @@ $VERSION = '2.01';
%MUNGE = (
%SNMP::Info::MUNGE,
'airespace_ap_mac' => \&SNMP::Info::munge_mac,
'fw_port' => \&SNMP::Info::munge_mac,
'airespace_bl_mac' => \&SNMP::Info::munge_mac,
'airespace_if_mac' => \&SNMP::Info::munge_mac,
'airespace_sta_mac' => \&SNMP::Info::munge_mac,
'airespace_ap_mac' => \&SNMP::Info::munge_mac,
'airespace_ap_ethermac' => \&SNMP::Info::munge_mac,
'fw_port' => \&SNMP::Info::munge_mac,
'airespace_bl_mac' => \&SNMP::Info::munge_mac,
'airespace_if_mac' => \&SNMP::Info::munge_mac,
'airespace_sta_mac' => \&SNMP::Info::munge_mac,
);
sub layers {
return '00000011';
return '00000111';
}
sub serial {
@@ -896,6 +899,47 @@ sub e_parent {
return \%e_parent;
}
# arpnip:
#
# This is the controller snooping on the MAC->IP mappings.
# Pretending this is arpnip data allows us to get MAC->IP
# mappings even for stations that only communicate locally.
# Also use the controller's knowledge of the APs' MAC and
# IP addresses to augment the data.
sub at_paddr {
my $airespace = shift;
my $mac2ip = $airespace->airespace_sta_ip();
my $apethermac = $airespace->airespace_ap_ethermac();
my $ret = {};
foreach my $idx ( keys %$mac2ip ) {
next if ( $mac2ip->{ $idx } eq '0.0.0.0' );
my $mac = join( ":", map { sprintf "%02x", $_ } split /\./, $idx );
$ret->{$idx} = $mac;
}
foreach my $idx ( keys %$apethermac ) {
$ret->{$idx} = $apethermac->{$idx};
}
return $ret;
}
sub at_netaddr {
my $airespace = shift;
my $mac2ip = $airespace->airespace_sta_ip();
my $ap2ip = $airespace->airespace_ap_ip();
my $ret = {};
foreach my $idx ( keys %$mac2ip ) {
next if ( $mac2ip->{ $idx } eq '0.0.0.0' );
$ret->{$idx} = $mac2ip->{ $idx };
}
foreach my $idx ( keys %$ap2ip ) {
$ret->{$idx} = $ap2ip->{ $idx };
}
return $ret;
}
1;
__END__