Technical Documentation

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

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