Monitoring ATM VCs and VPI/VCI Ranges Used for MPLS

Purpose

Display information about ATM VCs used as MPLS LSPs and VPI-VCI ranges reserved for MPLS when you use the interface label space for MPLS labels.

Action

To display all VCs and reserved VC ranges on the router:

host1#show atm vc
                                      Cate Rx/Tx Rx/Tx Rx/Tx Sta
Interface    VPI VCI  VCD  Type Encap gory Peak   Avg  Burst tus
------------ --- ---- ---- ---- ----- ---- ----- ----- ----- ---
ATM 3/0.2      0 101  4375 PVC  AUTO  CBR   1000     0     0 UP
ATM 3/0.3      0 102  4376 PVC  AUTO  CBR   1000     0     0 DOWN
...
ATM 3/0.8099   1 8099 8099 PVC  SNAP  UBR      0     0     0 UP
ATM 3/0.8100   1 8100 8100 PVC  SNAP  UBR      0     0     0 DOWN
8000 circuit(s) found
Reserved VCC ranges:
          Start Start End End
Interface  VPI   VCI  VPI VCI
--------- ----- ----- --- ---
ATM 2/0       2   100   2 102
ATM 2/0       3   300   3 303
2 reservation(s) found

To display a summary of all reserved VC ranges on the router, including those reserved for MPLS use:

host1#show atm vc reserved
Reserved VCC ranges:
          Start Start End End
Interface  VPI   VCI  VPI VCI
--------- ----- ----- --- ---
ATM 2/0       2   100   2 102
ATM 2/0       3   300   3 303
2 reservation(s) found

Meaning

Table 60 lists the show atm vc command output fields.

Table 60: show atm vc Output Fields

Field Name

Field Description

Interface

Interface type and number

VPI

Virtual path identifier

VCI

Virtual channel identifier

VCD

Virtual circuit descriptor

Type

Type of circuit: PVC

Encap

Encapsulation method: AUTO, AAL5, MUX, SNAP, ILMI, F4-OAM

Category

Service type configured on the VC: UBR, UBR-PCR, NRT-VBR, RT-VBR, CBR

Rx/Tx Peak

Peak rate in Kbps

Rx/Tx Avg

Average rate in Kbps

Rx/Tx Burst

Maximum number of cells that can be burst at the peak cell rate

Status

State of the virtual circuit: Up, Down

Start VPI

Starting virtual path identifier (inclusive) of the reserved VC range

Start VCI

Starting virtual circuit identifier (inclusive) of the reserved VC range

End VPI

Ending virtual path identifier (inclusive) of the reserved VC range

End VCI

Ending virtual circuit identifier (inclusive) of the reserved VC range

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