What does the Type value in OpenAPI output for Interface Items represent?

Document ID : KB000115300
Last Modified Date : 19/09/2018
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Introduction:
Below is a sample list of Interfaces from OpenAPI output.

"ID","DeviceItemID","Name","Type"    
30029,5731,Gi0/0/0,6 
30030,5731,Gi0/0/1,6    
30031,5731,Gi0,6    
30032,5731,T1 0/1/0,18    
30033,5731,Se0/1/0:1,32    
30102,5283,Gi0/0/1,6    
30103,5283,Gi0,6    
30104,5283,T1 0/1/0,18    
30105,5283,Se0/1/0:1,32

 
Question:
What does the Type value in OpenAPI output for Interface Items represent?
Environment:
All supported CA Performance Management releases
Answer:
These are the values the interfaces are providing from queries to the ifType MIB OID.

We see type values 6, 18, and 32 listed here. These are defined as:
  • ethernet-csmacd(6), 
  • ds1(18), 
  • frame-relay(32) 
Additional Information:
For ifType we see per this sample page that shows us the possible values that can be seen in the ifType MIB OID for interfaces.
 
The following are the first 32 common types in use. There are more than 32 possible types that can be seen. Review the sample page here for more type definitions.

ifType OBJECT-TYPE
              SYNTAX  INTEGER {
                          other(1),          
                          regular1822(2),
                          hdh1822(3),
                          ddn-x25(4),
                          rfc877-x25(5),
                          ethernet-csmacd(6),
                          iso88023-csmacd(7),
                          iso88024-tokenBus(8),
                          iso88025-tokenRing(9),
                          iso88026-man(10),
                          starLan(11),
                          proteon-10Mbit(12),
                          proteon-80Mbit(13),
                          hyperchannel(14),
                          fddi(15),
                          lapb(16),
                          sdlc(17),
                          ds1(18),           
                          e1(19),            
                          basicISDN(20),
                          primaryISDN(21),   
                          propPointToPointSerial(22),
                          ppp(23),
                          softwareLoopback(24),
                          eon(25),            
                          ethernet-3Mbit(26),
                          nsip(27),           
                          slip(28),           
                          ultra(29),          
                          ds3(30),            
                          sip(31),            
                          frame-relay(32)
                      }
              ACCESS  read-only
              STATUS  mandatory
              DESCRIPTION
                      "The type of interface, distinguished according to
                      the physical/link protocol(s) immediately `below'
                      the network layer in the protocol stack."
              ::= { ifEntry 3 }