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    Monitoring Status or Summary Information for ATM Subinterfaces

    Purpose

    Display the current state of all ATM subinterfaces, all ATM subinterfaces configured on a specified ATM physical interface, or a specific ATM subinterface. You can use the summary keyword to display brief summary information for all ATM subinterfaces, or for ATM subinterfaces configured on a specified ATM physical interface. You can use the status keyword with one of the following operating status values to display status information only for ATM subinterfaces with a specific operating status:

    • dormant
    • dormantLockout
    • down
    • lowerLayerDown
    • notPresent
    • up

    You can use the atm slot/port/vpi/vci format (for ERX7xx models, ERX14xx models, and ERX310 router) or the slot/adapter/port/vpi/vci format (for E120 and E320 routers) to display the current state of an ATM subinterface created on the PVC with the specified VPI and VCI values.

    Note: You can use the atm slot/port/vpi/vci format as an alternative to the atm slot/port.subinterface format with the specific show interface and show subinterface commands to monitor all ATM 1483 subinterfaces (except NBMA interfaces) as well as the upper-layer interfaces configured over an ATM 1483 subinterface. You cannot, however, use the atm slot/port/vpi/vci format to create or modify an ATM 1483 subinterface.

    These guidelines also apply to E120 and E320 routers when you use the atm slot/adapter/port/vpi/vci format as an alternative to the atm slot/adapter/port.subinterface format.

    For more information, see Unresolved xref in Unresolved xref.

    Action

    To display the current state of all ATM subinterfaces:

    host1#show atm subinterface 
                                    Circuit                         Interface
    Interface   ATM-Prot VCD VPI VCI Type  Encap MTU    Status      Type
    ----------- -------- --- --- --- ----- ----- ---- ----------- -------
    ATM 2/0.101 RFC-1483 101   0 101 PVC   AUTO  9180 dormantLockout Static
    ATM 2/0.102 RFC-1483 102   0 102 PVC   AUTO  9180 up             Dynamic
    ATM 2/0.103 RFC-1483 103   0 103 PVC   AUTO  9180 dormant        Static
    3 interface(s) found

    To display summary information for all ATM subinterfaces:

    host1#show atm subinterface summary
    3 subinterfaces: 1 up, 0 down, 
    1 dormant, 1 dormantLockout,
    0 lowerLayerDown, 0 not present

    To display status information for all ATM subinterfaces in the dormantLockout state:

    host1#show atm subinterface status dormantLockout
                                    Circuit                        Interface
     Interface  ATM-Prot VCD VPI VCI  Type Encap MTU  Status       Type
    ---------- -------- --- --- --- ------ ----- ---- ------------- ---------
    ATM 2/0.101 RFC-1483 101   0 101 PVC   AUTO  9180 dormantLockout Static
    1 interface(s) found

    To display the current state of a specific ATM subinterface:

    host1#show atm subinterface atm 2/0.101
                                    Circuit                        Interface
     Interface  ATM-Prot VCD VPI VCI Type Encap MTU    Status      Type
    ----------- -------- --- --- --- ----- ----- ---- ------------ ---------
    ATM 2/0.101 RFC-1483 101  0 101 PVC   AUTO  9180 dormantLockout Static
    Auto configure status         : dynamic
    Auto configure interface(s)   : IP  bridgedEthernet  PPP  PPPoE
    Detected 1483 encapsulation   : AUTO
    Detected dynamic interface    : none
    Interface types in lockout    : IP
    Lockout state (seconds)       : Min Max  Current Elapsed Next
    ------------------------------- --- ---- ------- ------- ----
    IP                                1   30      16       7   30
    BridgedEnet                     900 3600       0       0  900
    PPP                               1  300       0       0    1
    PPPoE                             1  300       0       0    1
    Assigned profile (IP)         : ipoa
    Assigned profile (BridgedEnet): beth
    Assigned profile (PPP)        : ppptest
    Assigned profile (PPPoE)      : pppoetest
    Assigned profile (any)        : none assigned
    BridgedEnet subscriber info   :
    Username: elaine@jpeterman.com
    Password: putty
    Authenticate: enabled
    SNMP trap link-status: disabled
    InPackets:                0
    InBytes:                  1904
    OutPackets:               0
    OutBytes:                 0
    InErrors:                 0
    OutErrors:                0
    InPacketDiscards:         14
    InPacketsUnknownProtocol: 0
    OutDiscards:              0
    1 interface(s) found

    To display the current state of a specific ATM subinterface created on the PVC with the specified VPI and VCI values:

    host1#show atm subinterface atm 0/0/0/101
                                     Circuit                   Interface
     Interface  ATM-Prot VCD VPI VCI  Type   Encap MTU  Status   Type
    ----------- -------- --- --- --- ------- ----- ---- ------ ---------
    ATM 0/0.101 RFC-1483 101   0 101 PVC     AUTO  9180 up     Static
    Auto configure status         : dynamic
    Auto configure interface(s)   : PPPoE
    Detected 1483 encapsulation   : SNAP
    Detected dynamic interface    : PPPoE
    Interface types in lockout    : none
    Lockout state (seconds)       : Min Max Current Elapsed Next
    ------------------------------- --- --- ------- ------- ----
    PPPoE                             1 300       0       0    1
    Assigned profile (IP)         : none assigned
    Assigned profile (BridgedEnet): none assigned
    Assigned profile (PPP)        : none assigned
    Assigned profile (PPPoE)      : pppoeprofile
    Assigned profile (any)        : none assigned
    SNMP trap link-status: disabled
    InPackets:                5119
    InBytes:                  358672
    OutPackets:               5107
    OutBytes:                 357510
    InErrors:                 0
    OutErrors:                0
    InPacketDiscards:         3
    InPacketsUnknownProtocol: 0
    OutDiscards:              0
    1 interface(s) found

    Meaning

    Table 1 lists the show atm subinterface command output fields.

    Table 1: show atm subinterface Output Fields

    Field Name

    Field Description

    Interface

    Interface identifier

    ATM-Prot

    One of the following ATM protocol types:

    • RFC-1483—Multiprotocol encapsulation over AAL5
    • NBMA—Nonbroadcast multiaccess interface
    • ATM/MPLS—Local ATM passthrough interface

    VCD

    Virtual circuit descriptor

    VPI

    Virtual path identifier

    VCI

    Virtual circuit (or channel) identifier

    Circuit Type

    Type of circuit: PVC

    Encap

    Administered encapsulation method based on what was configured with the atm pvc command

    MTU

    Maximum transmission unit size for the interface

    Status

    One of the following ATM 1483 subinterface states:

    • absent—Represents the notPresent state and indicates that, although the SRP detects the ATM 1483 subinterface, the module on which the subinterface resides has not completed booting up, has failed, or is disabled.
    • dormant—Indicates that the ATM 1483 subinterface is performing autodetection of one or more upper-layer encapsulation types and is waiting to receive a packet of that type on a lower-layer interface. An ATM 1483 subinterface transitions from the dormant state to the up state when the router receives a valid packet of the specified encapsulation type on the interface.
    • dormantLockout—Indicates that a dormant ATM 1483 subinterface has one or more upper-layer encapsulation types currently undergoing encapsulation type lockout. An ATM 1483 subinterface transitions from the dormantLockout state to the dormant state when the lockout time expires for all upper-layer encapsulation types undergoing lockout. An ATM 1483 subinterface transitions from the dormantLockout state to the up state when the router receives a valid packet for an encapsulation type that is configured for autodetection but is not undergoing lockout.
    • down—Indicates that the ATM 1483 subinterface is administratively disabled or has a circuit that is down or not configured.
    • lowerLayerDown—Indicates that a lower-layer interface below the ATM 1483 subinterface is down.
    • up—Indicates that the ATM 1483 subinterface is up and able to transfer data. For an ATM 1483 subinterface that supports one or more dynamic upper-layer interfaces, indicates that the router has created the dynamic upper-layer interface or is in the process of creating it.

    Interface Type

    Type of ATM 1483 subinterface: dynamic or static

    Auto configure status

    Setting of the autoconfiguration feature:

    • dynamic—Autodetection is on; the router automatically detects the next upper interface
    • static—Autodetection is off

    Auto configure interface(s)

    Types of dynamic upper interfaces configured with the auto-configure command: bridged Ethernet, IP, PPP, or PPPoE

    Detected 1483 encapsulation

    If the encapsulation type is set to aal5autoconfig, displays the 1483 encapsulation type detected on the subinterface (displays AUTO until a packet is detected)

    Detected dynamic interface

    Type of dynamic upper interface detected during autoconfiguration: bridged Ethernet, IP, PPP, PPPoE, or (if no packet has been received) none

    Interface types in lockout

    Encapsulation types currently experiencing lockout: bridged Ethernet, IP, PPP, PPPoE, or none

    Lockout state (seconds)

    Settings of encapsulation type lockout for the upper-layer encapsulation type indicated

    • Min—Minimum lockout time, in seconds
    • Max—Maximum lockout time, in seconds
    • Current—Current lockout time, in seconds; displays 0 (zero) if lockout is not occurring
    • Elapsed—Time elapsed into the lockout time, in seconds; displays 0 (zero) if lockout is not occurring
    • Next—Lockout time for the router to use for the next lockout event, in seconds

    Assigned profile

    For each dynamic interface type, indicates whether or not a profile is assigned and, if assigned, displays the profile name

    Subscriber info

    Subscriber login information for the specified dynamic interface type (bridged Ethernet or IP)

    SNMP trap link-status

    Trap link status: enabled or disabled

    InPackets

    Number of packets received on this interface

    InBytes

    Number of bytes received on this interface

    OutPackets

    Number of packets transmitted on this interface

    OutBytes

    Number of bytes transmitted on this interface

    InErrors

    Number of errors received on this interface

    OutErrors

    Number of outgoing errors on this interface

    InPacketDiscards

    Number of incoming packets discarded on this interface

    InPacketsUnknownProtocol

    Number of incoming packets with an unknown protocol type

    OutDiscards

    Number of outgoing packets discarded on this interface

    Published: 2014-08-14