Cabletron Systems 1800 Appendix D NetView Management

Appendix D
NetView Management
The SmartSwitch 1800 supports a NetView service point function, which allows a
node to be configured and managed from a NetView host. NetView support provides
management access to downstream SDLC devices, and allows diagnosing problems
and changing parameters in the node.
The service point in the Sm artSwitch 1800 connects to the NetV iew host via an LLC2
sessi on (over LAN or fra me rela y), whic h is esta bl ished at node I P L. LLC2 m ust be
installed in either the service point node or another SmartSwitch 1800 that is con-
nected to the service point node via X.25 ( physical link or over frame relay p er Annex
G or RFC 14 90). (The li nk can be be tween two nodes of an y ty pe a m on g S martSw it c h
1800, 9W004, FRX4000, and FRX6000.)
The NetView host (also referred to as a focal point) sends commands to the service
point in the form of NMVTs (network management vector transports). The service
point function tran slates information from th e node into NMVTs a nd responds to the
host. Four types of NMVTs can be transmitted:
●RUNCMDs – commands from the host to execute specified operations. Three
types of command are su pp orted:
◆Display – used to display status and configuration information
◆Vary – used to change the active/inactive status of a PU or line.
◆Modif y – us e d to cha n ge configu ra t i on of a PU a nd th e l in e be tw een it and
the node.
●RUNCMD replies – from the service point to the host.
●Alerts – unsolicited information about events in the node, lines, or PUs.
●LPDAs – link problem determination aids, which are procedures used to test
status and to control the node, communications line, and PU interface.
The SmartSwitch 1800 supports LPDA versions 1 and 2.
The actual command syntax used in NMVTs from the host is documented in IBM’s
VTAM Operation manual. Responses to host commands generally use the textual
characteristics of VTAM (with a different prefix).