Cisco Cisco IOS Software Release 12.0(16)S

The MPLS TE MIB contains numerous tables and object definitions that provide read-only SNMP 
management support for the MPLS traffic engineering features in Cisco IOS. The MPLS TE MIB 
conforms to Abstract Syntax Notation One (ASN.1), thus reflecting an idealized MPLS traffic 
engineering database.

Using any standard SNMP network management application, you can retrieve and display information 
from the MPLS TE MIB using GET operations; similarly, you can traverse information in the MIB 
database for display using GETNEXT operations.

The MPLS TE MIB tables and objects supported in this Cisco IOS release are listed below. Important 
MIB tables (those highlighted in bold type) are described briefly in accompanying text.

mplsTunnelConfigured—Presents the total number of tunnel configurations that are defined on this 
node.

mplsTunnelActive—Presents the total number of LSPs that are defined on this node.

mplsTunnelTEDistProto—The IGP distribution protocol in use.

mplsTunnelMaxHops—The maximum number of hops any given tunnel may utilize.

mplsTunnelIndexNext—Unsupported; set to 0.

mplsTunnelTable—Entries in this table with an instance of 0 and a source address of 0 represent 
tunnel head configurations. All other entries in this table represent instances of label switched paths 
(LSPs), both signaled and standby. If a tunnel instance is signaled, its operating status (operStatus) 
is set to “up” (1) and its instance corresponds to an active LSP. 

Tunnel configurations exist only on the tunnel head where the tunnel interface is defined. LSPs 
traverse the network and involve tunnel heads, tunnel midpoints, and tunnel tails. 

The entries in the mplsTunnelTable are listed and described below. Each description carries an 
alphabetic suffix (a), (b), or (c), if/as appropriate, to indicate the applicability of the entry: 

For tunnel head configurations only 

For LSPs only 

For both tunnel head configurations and LSPs 

Pointers in the tunnel table refer to corresponding entries in other MIB tables. By means of these 
pointers, you can find an entry in the mplsTunnelTable and follow a pointer to other tables for 
additional information. The pointers include the following: mplsTunnelResourcePointer, 
mplsTunnelHopTableIndex, mplsTunnelARHopTableIndex, and mplsTunnelCHopTableIndex.

The tunnel table is indexed by tunnel id, tunnel instance, tunnel source address, and tunnel 
destination address. 

mplsTunnelIndex—Same as Tunnel Id (c).

mplsTunnelInstance—Tunnel instance of the LSP; 0 for head configurations (b).

mplsTunnelIngressLSRId—Source IP address of the LSP; 0 for head configurations (b).

mplsTunnelEgressLSRId—Destination IP address of the tunnel (c).

mplsTunnelName—CLI name for the tunnel interfaces (a).

mplsTunnelDescr—Descriptive name for tunnel configurations and LSPs (c).

mplsTunnelIsIf—Indicates whether or not the entry represents an interface (c).

mplsTunnelIfIndex—Provides the index of the tunnel interface within the ifMIB (a).