Installing and Administering OSI Transport Services

Chapter 1 35
HP OTS/9000 Resources
How OTS/9000 Finds a Remote End System
IF THEN
1 The destination NSAP
belongs to an ES known
through static
configuration or dynamic
addition through the
ES-IS protocol or the
otsaddes command
OTS/9000 sends the PDU
directly to the specified remote
ES
2 The network ID of the
destination NSAP
matches a local LAN
network ID configured in
the osiadmin LAN
Subnetwork screen.
OTS/9000 will send the PDU to
the first IS on the subnetwork, if
known. Otherwise, it will
multicast the NSAP by using
the Query Config function of the
ES/IS protocol. If the NSAP is
multicasted, the remote ES will
usually respond with dynamic
route information to avoid
subsequent multicasting.
3 The network ID of the
destination NSAP
matches a route network
ID that was configured
using osiadmin routes
configuration or the
dynamic routing command
otsaddroute
OTS/9000 sends the PDU to the
corresponding IS
4 OTS has exhausted all
other means of sending
an outbound packet to its
destination, and the
snet_query_subnet
parameter is set to yes
OTS/9000 sends the PDU to all
CLNP subnets that have the
snet_query_subnet parameter
set. If there is an IS on the
subnet, the PDU is sent to the
IS: otherwise, the packet is sent
to the subnet using Query
Configuration.