---
name: "SNMP::Info::Layer3::C3550"
section: "3pm"
platform: "linux"
package: "libsnmp-info-perl"
version: "3.972002-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SNMP::Info::Layer3::C3550"
---

# SNMP::Info::Layer3::C3550(3pm)

SNMP Interface to Cisco Catalyst 3550 Layer 2/3 Switches running IOS

## NAME

SNMP::Info::Layer3::C3550 - SNMP Interface to Cisco Catalyst 3550 Layer 2/3 Switches running IOS

## AUTHOR

Max Baker

## SYNOPSIS

```
 # Let SNMP::Info determine the correct subclass for you.
 my $c3550 = new SNMP::Info(
                        AutoSpecify => 1,
                        Debug       => 1,
                        # These arguments are passed directly to SNMP::Session
                        DestHost    => 'myswitch',
                        Community   => 'public',
                        Version     => 2
                        )
    or die "Can't connect to DestHost.\n";
 my $class      = $c3550->class();
 print "SNMP::Info determined this device to fall under subclass : $class\n";
```

## DESCRIPTION

Abstraction subclass for Cisco Catalyst 3550 Layer 2/3 Switches.

These devices run IOS but have some of the same characteristics as the Catalyst WS-C family (5xxx,6xxx).  For example, forwarding tables are held in VLANs, and extended interface information is gleaned from *CISCO-SWITCH-MIB*.

### Inherited Classes

- SNMP::Info::CiscoStack

  - SNMP::Info::Layer3::CiscoSwitch

  ### Required MIBs

- Inherited Classes' MIBs

  See "Required MIBs" in SNMP::Info::CiscoStack for its own MIB requirements.

  See "Required MIBs" in SNMP::Info::Layer3::CiscoSwitch for its own MIB requirements.

## GLOBALS

These are methods that return scalar value from SNMP

- $c3550-\>**vendor()**

  Returns 'cisco'

- $c3550-\>**model()**

  Will take the translated model number and try to format it better.

  ```
   355048 -> 3550-48
   355012G -> 3550-12G
  ```

- $c3550-\>**ports()**

  Tries to cull the number of ports from the model number.

### Globals imported from SNMP::Info::CiscoStack

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

### Globals imported from SNMP::Info::Layer3::CiscoSwitch

See documentation in "GLOBALS" in SNMP::Info::Layer3::CiscoSwitch for details.

## TABLE METHODS

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

### Overrides

- $c3550-\>**i\_duplex()**

  Returns reference to hash of iid to current link duplex setting.

  Software version 12.1(22)EA1a or greater returns duplex based upon the result of `$c3550`-\>**el\_duplex()**.  Otherwise it uses the result of the call to **CiscoStack::i\_duplex()**.

  See SNMP::Info::EtherLike for **el\_duplex()** method and SNMP::Info::CiscoStack for its **i\_duplex()** method.

- $c3550-\>**i\_duplex\_admin()**

  Returns reference to hash of iid to administrative duplex setting.

  Software version 12.1(22)EA1a or greater returns duplex based upon the result of `$c3550`-\>**p\_duplex()**.  Otherwise it uses the result of the call to **CiscoStack::i\_duplex()**.

  See SNMP::Info::CiscoStack for its **i\_duplex()** and **p\_duplex()** methods.

- $c3550-\>set\_i\_duplex\_admin(duplex, ifIndex)

  Sets port duplex, must be supplied with duplex and port `"ifIndex"`.

  Speed choices are 'auto', 'half', 'full'.

  Crosses `$c3550`-\>**p\_port()** with `$c3550`-\>**p\_duplex()** to utilize port `"ifIndex"`.

  ```
      Example:
      my %if_map = reverse %{$c3550->interfaces()};
      $c3550->set_i_duplex_admin('auto', $if_map{'FastEthernet0/1'})
          or die "Couldn't change port duplex. ",$c3550->error(1);
  ```

### Table Methods imported from SNMP::Info::CiscoStack

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

### Table Methods imported from SNMP::Info::Layer3::CiscoSwitch

See documentation in "TABLE METHODS" in SNMP::Info::Layer3::CiscoSwitch for details.