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SNMP::Info::Layer2(3) User Contributed Perl Documentation SNMP::Info::Layer2(3)
 

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

Max Baker

 # 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";
 }

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(...);

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

Inherited Classes
MIBs required by the inherited classes listed above.
MIBs can be found in netdisco-mibs package.

These are methods that return scalar value from SNMP

$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 a serial number if found from ENTITY-MIB and OLD-CISCO-... MIB.

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

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

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

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

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

$l2->interfaces()
Creates a map between the interface identifier (iid) and the physical port name.
Defaults to "ifDescr" but checks and overrides with "ifName"

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

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

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

See documentation in "TABLE METHODS" in SNMP::Info::LLDP for details.
2019-01-02 perl v5.28.1

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