/ 
SNMP-Info-2.00
River stage one • 1 direct dependent • 1 total dependent
/ SNMP::Info::Layer2

NAME

SNMP::Info::Layer2 - SNMP Interface to network devices serving Layer2 only.

AUTHOR

Max Baker

SYNOPSIS

# Let SNMP::Info determine the correct subclass for you. 
my $l2 = new SNMP::Info(
                         AutoSpecify => 1,
                         Debug       => 1,
                         DestHost    => 'myswitch',
                         Community   => 'public',
                         Version     => 2
                       ) 
   or die "Can't connect to DestHost.\n";

my $class      = $l2->class();
print "SNMP::Info determined this device to fall under subclass : $class\n";

# Let's get some basic Port information
my $interfaces = $l2->interfaces();
my $i_up       = $l2->i_up();
my $i_speed    = $l2->i_speed();
foreach my $iid (keys %$interfaces) {
   my $port  = $interfaces->{$iid};
   my $up    = $i_up->{$iid};
   my $speed = $i_speed->{$iid}
   print "Port $port is $up. Port runs at $speed.\n";
}

DESCRIPTION

This class is usually used as a superclass for more specific device classes listed under SNMP::Info::Layer2::* Please read all docs under SNMP::Info first.

Provides abstraction to the configuration information obtainable from a Layer2 device through SNMP. Information is stored in a number of MIBs.

For speed or debugging purposes you can call the subclass directly, but not after determining a more specific class using the method above.

my $l2 = new SNMP::Info::Layer2(...);

Inherited Classes

SNMP::Info
SNMP::Info::Bridge
SNMP::Info::Entity

Required MIBs

Inherited Classes

MIBs required by the inherited classes listed above.

MIBs can be found in netdisco-mibs package.

GLOBALS

These are methods that return scalar value from SNMP

Overrides

$l2->model()

Cross references $l2->id() with product IDs in the Cisco MIBs.

For HP devices, removes 'hpswitch' from the name

For Cisco devices, removes c<'sysid'> from the name

$l2->vendor()

Tries to discover the vendor from $l2->model() and $l2->description()

$l2->serial()

Returns serial number if available through SNMP

Globals imported from SNMP::Info

See documentation in "GLOBALS" in SNMP::Info for details.

Globals imported from SNMP::Info::Bridge

See documentation in "GLOBALS" in SNMP::Info::Bridge for details.

Globals imported from SNMP::Info::Entity

See documentation in "GLOBALS" in SNMP::Info::Entity for details.

TABLE METHODS

These are methods that return tables of information in the form of a reference to a hash.

Overrides

$l2->interfaces()

Creates a map between the interface identifier (iid) and the physical port name.

Defaults to ifDescr but checks and overrides with ifName

$l2->i_ignore()

Returns reference to hash. Increments value of IID if port is to be ignored.

Ignores ports with ifType of loopback, propvirtual, other, and cpu

Table Methods imported from SNMP::Info

See documentation in "TABLE METHODS" in SNMP::Info for details.

Table Methods imported from SNMP::Info::Bridge

See documentation in "TABLE METHODS" in SNMP::Info::Bridge for details.

Table Methods imported from SNMP::Info::Entity

See documentation in "TABLE METHODS" in SNMP::Info::Entity for details.