
ATM Services Notes 53
| VTAM Version 4.2 requires PTF #UW20787. VTAM Version 4.3 requires PTF |
| #UW20788. |
| Visible symptoms of this problem can be seen as a lack of network management |
| data for PUs that are downstream of a NETBuilder II bridge/router using APPN DLU |
| services. The NetView message “AAU251I AAUDRTIB 02 UNEXPECTED SENSE |
| CODE X'1002' ENCOUNTERED FOR TARGET=pu_name” is printed in the log file |
| when this problem occurs. |
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|
ATM Services Notes | This section describes notes, cautions, and other considerations to be aware of |
| when using the Enterprise OS software with ATM services. The topics are |
| presented in alphabetical order. |
ATM Emulated LANs | Enterprise OS software supports a system maximum of 32 ATM emulated LANs. |
ATM LAN Emulation | This release of LAN emulation software does not support large 802.3 frame |
Clients and Large 802.3 | encapsulation as specified in the LANE standard 1.0. When IP routing is used from |
Frames | FDDI to an emulated LAN, packets larger than 1500 are sent fragmented per IP |
| fragmentation rules. |
ATM Connection Table | In a LAN Emulation environment with many LAN Emulation Servers (LESs), a |
| performance drop may occur when the NETBuilder bridge/router is able to |
| connect to the LAN Emulation Configuration Server (LECS), but many of the LESs |
| are down or unreachable. Disabling the ETHATM virtual ports corresponding to |
| the unreachable LESs will alleviate this situation. |
Deleting ATM Neighbors | Bridge ATM Neighbors must be deleted before the associated virtual ports can be |
| deleted. |
| The |
Transparent Gateway | emulation ports. |
|
|
WAN Protocols and | This section describes notes, cautions, and other considerations to be aware of |
Services Notes | when using the Enterprise OS software with WAN protocols and services. The |
| topics are presented in alphabetical order. |
ACCM Not Configurable | The ACCM (Async Control Character Map) used for Async PPP cannot be |
| configured. During LCP negotiation, the NETBuilder bridge/router always proposes |
| an ACCM of all zeros and agrees to whatever the peer negotiates. |
Asynch Tunnelling on | For best results, set the LineType parameter to Leased and set the SuperStack II |
Serial Ports | NETBuilder bridge/router model 32x connector type for the universal port to |
| |
| signal from the device. Or, if the device does not generate a control signal, a |
| loopback connector should be used to supply the control signal. |
Automatic Line | When set to the value of Auto, the |
Detection | bring up the path as a leased line by raising the data terminal ready (DTR) signal. If |
| the path comes up but a |
| modem does not hang up until brought down manually with the HangUp |
| command. To avoid this situation, set the |