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KEEDI ABRAXXA INPHOBIA

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Author image Max Baker

NAME

SNMP::Info::Layer2 - Perl5 Interface to network devices serving Layer2 only.

AUTHOR

Max Baker (max@warped.org)

SYNOPSIS

 # Let SNMP::Info determine the correct subclass for you. 
 my $l2 = new SNMP::Info(
                          AutoSpecify => 1,
                          Debug       => 1,
                          # These arguments are passed directly on to SNMP::Session
                          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::CDP
SNMP::Info::CiscoStats

Required MIBs

CISCO-PRODUCTS-MIB

Needed for ID of Cisco Products

CISCO-STACK-MIB

Needed for ID of Cisco Products

Inherited Classes

MIBs required by the inherited classes listed above.

MIBs can be found at ftp://ftp.cisco.com/pub/mibs/v2/v2.tar.gz

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 'sysid' from the name

$l2->vendor()

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

Globals imported from SNMP::Info

See documentation in SNMP::Info for details.

Globals imported from SNMP::Info::Bridge

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

Globals imported from SNMP::Info::CDP

See documentation in SNMP::Info::CDP for details.

Globals imported from SNMP::Info::CiscoStats

See documentation in SNMP::Info::CiscoStats 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 SNMP::Info for details.

Table Methods imported from SNMP::Info::Bridge

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

Table Methods imported from SNMP::Info::CDP

See documentation in SNMP::Info::CDP for details.

Table Methods imported from SNMP::Info::CiscoStats

See documentation in SNMP::Info::CiscoStats for details.