Update to Conﬁguration Guide

Update to Configuration Guide

Cisco 7500 Series
and Cisco 7000	Minimum Required	Required Main	Required CIP	Release 11.0
with RSP7000	Code Memory	Memory	Memory	Runs From

		Required Code	Required CIP	Release 11.0
Cisco 7000 Series		Memory	Memory	Runs From

Enterprise Set	8 MB Flash memory	16 Mb	32 Mb	RAM
(gs7-k-mz)	card

Enterprise/CIP2 Set	8 MB Flash memory	16 Mb	32 Mb	RAM
(gs7-k2-mz)	card

Microcode Software

Note that microcode software images are bundled with the system software image. Bundling eliminates the need to store separate microcode images. When the router starts up, the system software unpacks the microcode software bundle and loads the proper software on all the interface processor boards.

New Software Features in 11.0(10)BT

The TN3270 server is a new feature on the CIP of the Cisco 7000 family of routers. The TN3270 server allows TN3270 clients access to IBM and IBM-compatible mainframes. It can reduce the cycles spent by the mainframe on TCP/IP and TN3270 processing by a factor of ten or more and off-load the TCP/IP and TN3270 cycles from the mainframe.

The TN3270 server supports up to 8000 (CIP1) or up to 16000 (CIP2) concurrent sessions, while most external gateway solutions can support only 1000 to 2000 sessions. The TN3270 server offers the following capabilities:

•Load Balancing and Redundancy—Provides effective CIP resource utilization and more consistent response times. (This feature is initially provided by means of an external, prototype implementation.)

•End-to-End Session Visibility—Provides enhanced resource management.

•Systems Network Architecture (SNA) Session Switching—Off-loads VTAM by providing session routing.

•TN3270E Support—In combination with a TN3270E client, provides advanced SNA management and SNA functionality, including printer support.

•Dynamic Deﬁnition of Dependent Logical Units (LU)—Provides simpliﬁed conﬁguration and network deﬁnition at the router and in VTAM.

•Dynamic Allocation of LUs—Makes efﬁcient use of LU pool resources while supporting multiple SNA model types.

TN3270 server requires 32 MB of CIP dynamic RAM to support up to 4000 sessions, 64 MB to support 8000 sessions, and 128 MB to support 16000 sessions (CIP2 only). TN3270 server can run concurrently with any of the other CIP applications (IP Datagram, TCP/IP Ofﬂoad, or CIP SNA (CSNA)), but operation of any of these features will affect the total number of sessions supported because of contention for CIP processor cycles.

The information that follows is an update to the Router Products Conﬁguration Guide, Chapters 23 to 33. Add the TN3270 information as a standalone chapter following page 33-22.

4Cisco IOS Release 11.0 BT Release Note and Update to Conﬁguration Guides and Command References