Configuring a Dynamic IPoA Interface

To configure dynamic IPoA interfaces:

  1. Configure a physical interface.
    host1(config)#interface atm 5/0
  2. Configure an ATM subinterface.
    host1(config-if)#interface atm 5/0.1
  3. Configure a PVC by specifying the VCD, the VPI, the VCI, and the encapsulation type.
    host1(config-subif)#atm pvc 10 10 22 aal5snap

    If you want the router to autodetect the encapsulation type, use the aal5autoconfig option. For more information, see Creating a PVC on an ATM 1483 Subinterface.

    host1(config-subif)#atm pvc 10 10 22 aal5autoconfig
  4. Assign a profile. For more information, see Dynamic Interface Configuration Using a Profile.
    host1(config-subif)#profile ip foo
  5. (Optional) Assign subscriber identification. For more information, see Configuring a Local Subscriber for a Dynamic IPoA or Bridged Ethernet Interface.
    host1(config-subif)#subscriber ip user charlie domain myispname password lucy
  6. Do either of the following:
    • Configure the subinterface to detect and accept the dynamic IP encapsulation type using the default lockout time range, 1–300 seconds. For more information, see Configuring a Dynamic Interface over an ATM 1483 Subinterface.
      host1(config-subif)#auto-configure ip
    • Configure the subinterface to detect and accept the dynamic IP encapsulation type using a nondefault lockout time range. For example, the following command configures 3600 seconds (1 hour) as the minimum lockout time and 7200 seconds (2 hours) as the maximum lockout time.
      host1(config-subif)#auto-configure ip lockout-time 3600 7200
  7. (Optional) Verify your configuration.
    host1#show atm subinterface atm 5/0.1
                                   Circuit                           Interface
    Interface ATM-Prot VCD VPI VCI  Type   Encap MTU      Status       Type
    --------- -------- --- --- --- ------- ----- ---- -------------- ---------
    ATM 5/0.1 RFC-1483  10  10  22 PVC     SNAP  9180 lowerLayerDown Static
    
    Auto configure status         : dynamic
    Auto configure interface(s)   : IP
    Detected 1483 encapsulation   : none
    Detected dynamic interface    : none
    Interface types in lockout    : none
    
    Lockout state (seconds)       : Min  Max  Current Elapsed Next
    ------------------------------- ---- ---- ------- ------- ----
    IP                              3600 7200       0       0 3600
    
    Assigned profile (IP)         : foo
    Assigned profile (BridgedEnet): none assigned
    Assigned profile (PPP)        : none assigned
    Assigned profile (PPPoE)      : none assigned
    Assigned profile (any)        : none assigned
    
    IP subscriber info            :
    Username: charlie@myispname
    Password: lucy
    Authenticate: enabled
    
    SNMP trap link-status: disabled
    Assigned VC Class: none assigned
    
    InPackets:                0
    InBytes:                  0
    OutPackets:               0
    OutBytes:                 0
    InErrors:                 0
    OutErrors:                0
    InPacketDiscards:         0
    InPacketsUnknownProtocol: 0
    OutDiscards:              0
    InPolicedPackets:         0
    OutPolicedPackets:        0
    1 interface(s) found

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