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The SNA node and link configuration is done by using NMMGR to create or modify a configuration file. The file contains this information: SNA node information: used by SNA Transport to manage sessions with the host. Link information: used for SDLC data link control and phone data (for switched lines), X.25 link information, and token ring link information.
The basic operation of NMMGR is described in Using the Node Management
Services Utilities (32022-61005); if you are not familiar with
NMMGR, you should read that manual before continuing. Note that you
must have node manager (NM) or network administrator (NA) capabilities
to use NMMGR. SNA Node Information | |
SNA node information is used by SNA Transport, which
manages data transmission for the SNA services by providing an interface
to establish LU-LU sessions with the host. Before SNA Transport can allow the SNA services to establish sessions
between dependent LUs, SNA Transport must establish communication
with the host's System Services Control Point (SSCP). The SSCP manages
the SNA network functions on the host. It also manages SNA network
functions on the HP 3000, via the PU-SSCP session. For dependent
LU sessions, the HP 3000 must establish a PU-SSCP session and LU-SSCP
sessions. You do not have to configure any information for the PU-SSCP
or LU-SSCP sessions because it is already set in the SNA Transport
software. For a session between independent LUs, an associated LU-SSCP session
is not required. This is the major difference between dependent LUs
and independent LUs. For dependent LUs and independent LUs, you must provide information
for the LU-LU sessions. For each LU defined in SNA Transport, an
LU must be defined in the host's NCP/VTAM configuration. You must
configure each LU and establish a correspondence with an LU in the
NCP/VTAM configuration. You configure these items for an SNA node: Node identification. This information identifies the node to the host and specifies the type of node (T2.0 or T2.1) being used. Link type. This information specifies whether you are configuring an SDLC link, an X.25 link, or a token ring link. PU data. This information identifies the PU to the host. LUs. A list of up to 256 LUs can be configured for an SNA node.
Link Information | |
After you specify configuration information for the SNA node, you specify information for the link. For an SNA/SDLC link, you provide this information: Link data. This information includes the PSI physical path, timeout values, transmission speed, and link station ID. Phone data. This information includes the phone number and associated data for switched lines.
For an SNA/X.25 link, you provide this information: Link data. This information is about the Network Services (NS) network interface and the type of virtual circuit to be used. Virtual circuit data. This information is specifically about the permanent virtual circuit (PVC) or switched virtual circuit (SVC) to be used.
For an SNA/Token Ring link, you provide this information: Link data. This information is about the name and location of the token ring card,
the MAC address of the remote system, the local and remote service
access points (SAPs), and MAC layer timeout and retry values.
| | | |  | NOTE: If you change the configuration for an SNA node or link while it is running, the changes will not take effect until the node or link is restarted. | | | | |
Configuration File Validation | |
Validating the configuration file ensures that the configuration data is logically and syntactically correct. Each SNA service's data is also checked against the SNA node configuration data for correctness (for example, correct LU names). See each service's Node Manager's Guide for that service's validation error messages. You should validate the configuration file after completing any of
these tasks: An initial configuration of one or more SNA nodes An initial configuration of one or more SNA services A modification of an existing configuration
The configuration file is validated through NMMGR; see Using the
Node Management Services Utilities (32022-61005). Configuration File Critical Summary | |
The critical summary is a printout of the data in the configuration
file. It can be used to check current contents of the configuration
file--without opening the file--to determine whether the configuration
is correct. The critical summary is generated through NMMGR; see
Using the Node Management Services Utilities (32022-61005). An example of a critical summary of SNA/SDLC node and link configuration data is shown below.
CRITICAL SUMMARY - SNANODE CONFIGURATION
TUE, APR 20, 1993, 2:49 PM
CONFIGURATION FILE NAME: NMCONFIG.PUB.SYS
Validated subsystem.
SNANODE NAME: IBMNODE
ID Blk: 023 ID Num: 12345 Max Data: 2057 Type: SDLC
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LUNAME01 1 LUNAME02 2 LUNAME03 3 LUNAME04
LUNAME05 LUNAME06 LUNAME07 7 LUNAME08
LUNAME09 9 LUNAME10 10 LUNAME11 LUNAME12
LUNAME13 LUNAME14 14 LUNAME15 15 LUNAME16 16
LINKDATA
Physical Path: 24
Phone Number: 9-DD-415-555-3216
Station ID: FE Receive Timeout: 180 Local Timeout: 30
Connect Timeout: 900 Error Retries: 7 Transmission Speed: 9600
NRZI: N Auto Dial: Y
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: IBMNODE2
ID Blk: 023 ID Num: 00001 Max Data: 265 Type: SDLC
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LUNAME01 1 LUNAME02 2 LUNAME03 3 LUNAME04 4
LINKDATA
Physical Path: 2/16
Phone Number:
Station ID: 01 Receive Timeout: 0 Local Timeout: 0
Connect Timeout: 0 Error Retries: 1 Transmission Speed: 1200
NRZI: N Auto Dial: N
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: IBMNODE5
ID Blk: *** ID Num: ***** Max Data: *** Type: ****
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
(No data configured for this node)
LINKDATA
Physical Path:
Phone Number:
Station ID: 01 Receive Timeout: 180 Local Timeout: 30
Connect Timeout: 900 Error Retries: 7 Transmission Speed: 9600
NRZI: N Auto Dial: N
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Some fields could not be found or printed.
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An example of a critical summary of SNA/X.25 node and link configuration data is shown below.
CRITICAL SUMMARY - SNANODE CONFIGURATION
TUE, APR 20, 1993, 4:04 PM
CONFIGURATION FILE NAME: NMCONFIG.PUB.SYS
Validated subsystem.
SNANODE NAME: XSIMPVC
ID Blk: 023 ID Num: FFFF0 Max Data: 265 Type: X.25
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LU1 1
X25LINK:
NS NI Name: X25NI Inactivity Timeout: 5
VC Type: PVC Call Direction: OUT
Max Call Retries: 3 Call Retry Delay: 600
PVC Number: 10 Remote Address:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: XSIMOUT
ID Blk: 023 ID Num: FFFF1 Max Data: 265 Type: X.25
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LU1 1
X25LINK:
NS NI Name: X25NI Inactivity Timeout: 5
VC Type: SVC Call Direction: OUT
Max Call Retries: 3 Call Retry Delay: 600
PVC Number: Remote Address: 012345678901234
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: XSIMIN
ID Blk: 023 ID Num: FFFF2 Max Data: 265 Type: X.25
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LU1 1
X25LINK:
NS NI Name: X25NI Inactivity Timeout: 5
VC Type: SVC Call Direction: IN
Max Call Retries: 3 Call Retry Delay: 600
PVC Number: Remote Address: 012345678901234
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: PVC1
ID Blk: 023 ID Num: FFFF3 Max Data: 265 Type: X.25
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LU01 1 LU02 2 LU03 3 LU04 4
LU05 5 LU06 6 LU07 7 LU08 8
LU09 9 LU10 10 LU11 11 LU12 12
LU13 13 LU14 14 LU15 15 LU16 16
X25LINK:
NS NI Name: X25NI Inactivity Timeout: 0
VC Type: PVC Call Direction: OUT
Max Call Retries: 3 Call Retry Delay: 600
PVC Number: 1 Remote Address:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: SVCIN16
ID Blk: 023 ID Num: FFFF4 Max Data: 265 Type: X.25
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LU01 1 LU02 2 LU03 3 LU04 4
LU05 5 LU06 6 LU07 7 LU08 8
LU09 9 LU10 10 LU11 11 LU12 12
LU13 13 LU14 14 LU15 15 LU16 16
X25LINK:
NS NI Name: X25NI Inactivity Timeout: 0
VC Type: SVC Call Direction: IN
Max Call Retries: 3 Call Retry Delay: 600
PVC Number: Remote Address: 01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: SVCOUT
ID Blk: 023 ID Num: FFFF5 Max Data: 265 Type: X.25
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LU01 1 LU02 2 LU03 3 LU04 4
LU05 5 LU06 6 LU07 7 LU08 8
LU09 9 LU10 10 LU11 11 LU12 12
LU13 13 LU14 14 LU15 15 LU16 16
X25LINK:
NS NI Name: X25NI Inactivity Timeout: 0
VC Type: SVC Call Direction: OUT
Max Call Retries: 3 Call Retry Delay: 600
PVC Number: Remote Address: 01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SNANODE NAME: TEMP
ID Blk: 023 ID Num: FFFF6 Max Data: 265 Type: X.25
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
- - - - - - - - - - - - - - - - - - - - - - - -
LU01 1
X25LINK:
NS NI Name: ******** Inactivity Timeout: *****
VC Type: *** Call Direction: ***
Max Call Retries: *** Call Retry Delay: ***
PVC Number: **** Remote Address: ***************
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Some fields could not be found or printed.
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An example of a critical summary of SNA/Token Ring node and link configuration
is shown below.
CRITICAL SUMMARY - SNANODE CONFIGURATION
TUE, APR 20, 1993, 4:34 PM
CONFIGURATION FILE NAME: NMCONFIG.PUB.SYS
Validated subsystem.
SNANODE NAME: TRN3745
ID Blk: 2 ID Num: DCA12 Max Data: 017 Type: TOKEN
Node Type: 2.1 Node 2.1 Dependent LU Support: Y
LU Name LU# LU Name LU# LU Name LU# LU Name LU#
-------- --- -------- --- -------- --- -------- ---
LU02 2 LU03 3
TOKEN Link:
Remote DSAP: 04 Retry Limit: 10
Local SSAP: 04 Acknowledgment Timer: 10
Unacknowledged Send Limit: 2 Error Timer: 100
Remote Station Address: 40-00-13-74-51-01
LINK NAME: TOKENLNK TYPE: TOKEN
Physical Path: 44
Buffer Size: 4096
Factory Configured address: Y
Local station address: FF-FF-FF-FF-FF-FF
-------------------------------------------------------------------------------
Some optional or required fields are not configured.
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