Unconfiguring ATM adapters

You must unconfigure each LAN-emulated device before you can remove the adapter.

Classic IP and LAN emulation protocols can run over ATM adapters. LAN emulation protocol enables the implementation of emulated LANs over an ATM network. Emulated LANs can be Ethernet/IEEE 802.3, Token-ring/IEEE 802.5, and MPOA (MultiProtocol Over ATM).

To remove a LAN interface, do the following:

Type lsslot -c pci to list all the hot-plug slots in the system unit and display their characteristics.

Type smit ls_atm to list all the ATM adapters.

A message similiar to the following displays:

.
.
atm0 Available 04-04 IBM PCI 155 Mbps ATM Adapter (14107c00)
atm1 Available 04-06 IBM PCI 155 Mbps ATM Adapter (14104e00)

Type smit listall_atmle to list all the LAN-emulated clients on the adapters.

A message similiar to the following displays:

ent1 Available  ATM LAN Emulation Client (Ethernet)
ent2 Available  ATM LAN Emulation Client (Ethernet)
ent3 Available  ATM LAN Emulation Client (Ethernet)
tok1 Available  ATM LAN Emulation Client (Token Ring)
tok2 Available  ATM LAN Emulation Client (Token Ring)

All ATM adapters can have multiple emulated clients running on them.

Type smit listall_mpoa to list all the LAN-emulated clients on the adapters.
A message similar to the following displays:
```
mpc0 Available     ATM LAN Emulation MPOA Client
```
atm0 and atm1 are the physical ATM adapters. mpc0 is an MPOA-emulated client. ent1, ent2, ent3, tok1, and tok2 are LAN-emulated clients.

Type entstat to determine on which adapter the client is running.

A message similiar to the following displays:

-------------------------------------------------------------
ETHERNET STATISTICS (ent1) :
Device Type: ATM LAN EmulationATM Hardware Address: 00:04:ac:ad:e0:ad
.
.
.
ATM LAN Emulation Specific Statistics:
--------------------------------------
Emulated LAN Name: ETHelan3
Local ATM Device Name: atm0
Local LAN MAC Address:
.
.

Close all applications that are using the adapter you are unconfiguring.
To continue with this procedure, network dump locations must be disabled on the system. To look for and disable network dump locations, do the following:
1. Type the following from a command line:
```
smit dump
```
2. Select Show Current Dump Devices.
3. Check whether any configured dump device shows a network location.
  If not, exit SMIT and you are ready for step 7. To change a dump device to a local location, select Cancel or press F3 and continue with the following step.
4. If the primary dump device shows a network location, change to a local location by selecting Change the Primary Dump Device and then enter the local location in the Primary dump device field.
5. If the secondary dump device shows a network location, change to a local location by selectingChange the Secondary Dump Device and then enter the local location in the Secondary dump device field.
6. When finished, click OK or press Enter.
Use the rmdev -l device command to unconfigure the interfaces in the following order:
- Emulated interface = en1, et1, en2, et2, tr1, tr2 ...
- Emulated interface = ent1, ent2, tok1, tok2 ...
- Multiprotocol Over ATM (MPOA) = mpc0
- ATM adapter = atm0
To unconfigure the SCSI adapter scsi1 and all of its children while retaining their device definitions in the Customized Devices object class, type:
```
rmdev  -R scsi1
```
The system displays a message similar to the following:
```
        rmt0 Defined
        hdisk1 Defined
        scsi1 Defined
```
To unconfigure just the children of the SCSI adapter scsi1, but not the adapter itself, while retaining their device definitions in the Customized Devices object class, type:
```
rmdev  -p scsi1
```
The system displays a message similar to the following:
```
        rmt0 Defined
        hdisk1 Defined
```
To unconfigure the children of PCI bus pci1 and all other devices under them while retaining their device definitions in the Customized Devices object class, type:
```
rmdev  -p pci1
```
The system displays a message similar to the following:
```
         rmt0 Defined
         hdisk1 Defined
         scsi1 Defined
         ent0 Defined
```