Configuring SNAplus2 for Enterprise Extender

Configuring SNAplus2 for Enterprise Extender White Paper 5
Benefits of SNAPlus2 and Enterprise Extender
Running SNAPlus2 with HPR protocols over an IP backbone offers combined
SNA and IP best features. The benefits are in the three major areas of
availability, performance and usability.
Failure protection
¾ One o
f the key features of HPR is the ability to allow non-
disruptive rerouting upon path failures. SNAPLus2 can then
reroute sessions around a failure in the network, provided that an
alternate route exists. This is transparent to users and
applications, and existing sessions at the time of the failure will
remain active.
¾ Enterpri
se Extender is particularly suited for customers wishing to
exploit the multimode persistent sessions (MNPS) function in an
IBM parallel sysplex environment. MNPS allows an application to
move between MVS images after an application or system failure
on the mainframe, without disrupting existing sessions.
¾ SNAPlus2
can now support floating IP address when configured in
an MC/Service Guard package, to allow local failover and system
failover with HPR/IP links.
Optimized performance
The use of UDP port numbers to prioritize SNA traffic and the use of the
adaptive r
ate-based (ARB) protocol on HPR/IP links are designed to prevent
network congestion while ensuring optimal transmission over the IP
backbone.
Usability and cost effectiveness
Enterprise Extender has been designed to run over existing IP networks
wi
thout requiring any change to applications or to IP routers.
In conjunction with the new Branch Extender
feature of SNAPlus2, it allows
the implementation of large networks integrating the SNA and IP network
and application assets.