Linux Certif

Toute la documentation sur la certification Linux LPI

SNMP::Info::Layer2.3pm

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.