Cisco Cisco IOS Software Release 12.2(33)SRE

The out-segment table does not display “no label” entries. Labels that are displayed as “POP” are the 
special MPLS label 3.

The notation used in the MPLS-LSR-STD-MIB follows the conventions defined in Abstract System 
Notation One (ASN.1). ASN.1 defines an Open Systems Interconnection (OSI) language used to 
describe data types independently from particular computer structures and presentation techniques. Each 
object in the MIB incorporates a DESCRIPTION field that includes an explanation of the object’s 
meaning and usage, which, together with the other characteristics of the object (SYNTAX, 
MAX-ACCESS, and INDEX) provides sufficient information for management application development, 
as well as for documentation and testing.

The MPLS-LSR-STD-MIB represents an ASN.1 notation that represents an idealized MPLS LSR.

A network administrator can access the entries (objects) in the MPLS-LSR-STD-MIB by means of any 
SNMP-based network management system (NMS). The network administrator can retrieve information 
in the MPLS-LSR-STD-MIB using standard SNMP get and getnext commands.

Typically, SNMP runs as a low-priority process. The response time for the MPLS-LSR-STD-MIB is 
expected to be similar to that for other MIBs. The size and structure of the MIB and other MIBs in the 
system influence response time when you retrieve information from the management database. Traffic 
through the LSR also affects SNMP performance. The busier the switch is with forwarding activities, 
the greater the possibility of lower SNMP performance.

The top-level components of the MPLS-LSR-STD-MIB are: 

Tables and scalars (mplsLsrObjects)

Notifications (mplsLsrNotifications)

Conformance (mplsLsrConformance)

20, atm2

103242

Pop, eth1/5

1000

Pop, eth1/1

Cross-connect table

Out-segment 

label, interface

In-segment 

label