Configuring SNAplus2 for Enterprise Extender

Configuring SNAplus2 for Enterprise Extender White Paper 35
¾ Automatic network routing (ANR) enables APPN networks to
automatically reroute sessions if a portion of the originally computed
route fails.
Enterprise Extender Port and LS
These are SNAPlus2 configuration resources, which provide SNA connectivity
for applications using dependent and independent sessions over a native IP
network. It implements the “HPR/IP” protocol, which is also known as “HPR
over IP” or “Enterprise Extender”. SNA packets are transmitted natively across
the IP network as UDP datagrams.
Dependent LU Requester/Server
Dependent LU Requester (DLUR) function enables sessions for dependent LUs
to reside on remote nodes across an APPN network, instead of requiring a
direct connection to the host.
DLUR works in conjunction with Dependent LU Server (DLUS) at the host.
Together,
they route sessions across the network from dependent LUs in the
APPN network to the DLUS host. The route to the host can span multiple nodes
and can take advantage of APPN's network management, dynamic resource
location, and route calculation.
If the local node is a Network Node, dependent LUs on downstream nodes can
also
use pass-through DLUR, in the same way that LUs local to the node do, to
access the host across the network.
QDIO
QDIO stands for Queued Direct Input/Output. IBM’s turbo-charged network-to-
mainframe memory transfer protocol that works between OSA-Express and
Communications Server, using host system memory queues and a signaling
protocol.