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.