Cisco offers several Cisco IOS® Software Releases for LightStream 1010
and 8500 ATM switch routers. Each release offers a different combination of
functionality and hardware support. This document provides general Cisco IOS
software release suggestions for these platforms and discusses factors to
consider when you choose a release.
There are no specific requirements for this document.
This document is not restricted to specific software and hardware
Refer to the
Technical Tips Conventions for more information on document
Since Cisco IOS® Release 11.3 (and more fully since Cisco IOS Software
Release 12.0), Cisco has followed an IOS release model that generally uses two
types of releases:
Main releases—Identified by a version name that does
not end with a capital letter. For example, Cisco IOS Software Release 12.0(15)
is available at the Cisco Connection Online
Software Center for the LightStream 1010. Cisco IOS main releases seek
greater stability and quality. For that reason, main releases do not accept the
addition of features or platforms. Each maintenance revision provides bug fixes
Early deployment (ED) releases—Unlike main Cisco IOS
releases, Cisco IOS ED releases are vehicles that bring new development to the
marketplace. Each maintenance revision of an ED release includes not only bug
fixes, but a set of new features, new platform support, and general
enhancements to protocols and the Cisco IOS infrastructure. Every one to two
years, the features and platforms of the ED releases are ported to the next
main Cisco IOS release. Among the types of ED releases are:
Consolidated Technology Early Deployment (CTED) releases are easily
identifiable by name. The names of CTED releases always ends with a "T"
(technology). Examples of consolidated technology releases are Cisco IOS
Software Releases 11.3T, 12.0T, and 12.1T.
Further information on Cisco's release trains and the release model is
available at the Cisco Connection Online
Software Center in White Paper:
Cisco IOS Reference Guide. A more detailed version of this white paper
is also available in
Cisco IOS Releases: The Complete Reference guide
The LightStream 1010 supports two major trains of Cisco IOS images:
12.0 mainline and 12.0W5. Normally, a mainline image provides the most stable
release for a platform that runs Cisco IOS. However, this guideline does not
apply to the 12.0 mainline for the LightStream 1010.
The 12.0 mainline image is derived from the 11.3WA4 train, specifically
the 11.3(5)WA4(8) release. After the first few maintenance releases, the 12.0
mainline image does not contain any new LightStream 1010-specific features. New
features that specifically enhance the functionality of the LightStream 1010
are integrated in the 12.0W5 train. If you need only the 11.3WA4 features,
Cisco advises you to use the 12.0 mainline image as the general-deployment
maintenance path. Otherwise, Cisco advises you to use the latest 12.0W5 image.
In addition, Cisco releases a maintenance image for every platform that
runs the 12.0 mainline. It is important to understand that only a few
LightStream 1010-specific bug fixes are integrated in 12.0 mainline releases.
It is possible that a later 12.0 mainline release for the LightStream 1010
contains a bug that specifically applies to the LightStream 1010. This table
presents some of these fixes, but this is not meant to be a complete
Note: These Cisco bug IDs can only be viewed by registered customers who
are logged in.
Cisco Bug ID
Fixed-In Cisco IOS Software Release
Resolves a problem with the creation of a soft VC with 95
percent of the permanent virtual path (PVP) bandwidth. On variable bit rate
(VBR) virtual path (VP) tunnels, the peak cell rate (PCR) traffic parameters of
a call are now checked against the PCR of the tunnel rather than against the
maximum equivalent bandwidth of the tunnel.
Resolves a problem with switched virtual circuit (SVC) call
setup failures even when physical connectivity is fine. Also added these MIB
csfSigCallTotalSetupAttempts: total number of call setup
csfSigCallTotalFailAttempts: total number of failed call
csfSigCallFilterFailAttempts: number of failed call setup
attempts that match the diagnostic
Resolves software-forced crash on Catalyst 8510 MSR platform at
Applies fix in ATM signaling code that runs on
routers. Resolves crash on 7507 platform due to a bus
error at address 0xD0D0D19.
Implements Service Specific Connection Oriented Protocol
(SSCOP) state level changes. Resolves SSCOP BGN/END protocol data unit (PDU)
conformance issue, and allows switches and routers to interoperate with SVC
redundancy features in 12.1E images.
The Cisco IOS Software Release 12.0W5 technology release for the
LightStream 1010 as well as for the Catalyst 8500 series is based on and
maintains synchronization with the Cisco IOS 12.0 mainline image.
Synchronization means that a particular 12.0(X)W5 image includes the same bug
fixes as the 12.0(X) mainline image that matches. For example, the 12.0(16)W5
image includes the same bug fixes as the 12.0(16) mainline image.
As a technology release, the 12.0W5 train integrates new hardware
support, such as the eight-port T1/E1 IMA port adapter, and new software
support, such as IP MultiLayer Switching (MLS) over ATM and Fast Simple Server
Redundancy Protocol (FSSRP).
Cisco IOS Software Release 12.0W5 uses this naming scheme:
Cisco IOS Software Release 12.0(1)W5(X)
Cisco IOS Software Release 12.0(1)W5(Y)
Cisco IOS Software Release 12.0(x)W5(Z)
Cisco IOS Software Release
Note: Lowercase x and y indicate the version of the parent IOS mainline
Note: Uppercase X, Y, and Z indicate the maintenance level of the release.
Maintenance releases integrate new features and new software fixes. Maintenance
releases typically are released every seven to eight weeks.
An important concept to understand about Cisco IOS is general
deployment (GD) status, which refers to the point at which Cisco declares a
release to be stable on all platforms and in all network environments. A
release reaches GD status if the release meets certain quality criteria, which
includes positive feedback from actual customers. Only mainline releases, which
do not integrate new hardware and software support, are designed to reach GD
status. Technology releases like Cisco IOS Software Release 12.0W5 do not reach
In order to view more information about the Cisco IOS Software
12.0W5(X) releases, click
and check the
Notes for your ATM switch router.
The Catalyst 8500 Series and the LightStream 1010 are now supported by
Cisco IOS® Software Release 12.1(x)EY train. For more information about this
train, refer to these links:
The 12.0W5 train effectively went into maintenance mode for the
LightStream 1010 and Catalyst 8500 after Cisco IOS Software Release
12.0(10)W5(18b). The 12.1(x)EY train is an X or short-lived technology release
through which new features and new hardware support are introduced. The
12.1(x)EY train merges back into the main Cisco IOS Software Release 12.1E
release and ultimately into a Cisco IOS Software 12.2E release.
Before you upgrade your ATM switch router, make sure that your system
has sufficient memory resources to support 12.0W5 images. The internal
architecture of your switch router uses the these memory components:
Flash memory stores a copy of the Cisco IOS software and is retained
when you power down or restart. The 8540 MSR requires 16 MB of Flash memory,
while the 8510 MSR and LightStream 1010 require eight MB of Flash
On power on, the system loads the operating image into dynamic
random-access memory (DRAM), from which the image runs. DRAM also stores
dynamic configuration information and state tables such as routing tables and
virtual circuit (VC) tables. The Catalyst 8540 MSR now requires 256 MB of DRAM,
while the 8510 MSR and LightStream 1010 require 64 MB of DRAM.
Issue the show version command to determine
your current amount of DRAM and Flash memory. In this output, the LightStream
1010 has 64 MB of DRAM and eight MB of Flash memory.
Cisco Internetwork Operating System Software
IOS (tm) LightStream1010 WA4-5 Software (LightStream1010-WP-M), Version 12.0(10)W5(18b) RELEASE SOFTWARE
Copyright (c) 1986-2000 by cisco Systems, Inc.
Compiled Thu 03-Aug-00 08:33 by integ
Image text-base: 0x60010930, data-base: 0x60AC4000
ROM: System Bootstrap, Version 11.2(1.4.WA3.0) [integ 1.4.WA3.0], RELEASE SOFTWARE
ROM: LightStream1010 WA4-5 Software (LightStream1010-WP-M), Version 12.0(4a)W5(11a) RELEASE SOFTWARE
ls1010-3.8 uptime is 4 weeks, 4 days, 2 hours, 47 minutes
System restarted by power-on
System image file is "slot0:ls1010-wp-mz_120-10_W5_18b.bin"
cisco LightStream1010 (R4600) processor with 65536K bytes of memory.
R4700 processor, Implementation 33, Revision 1.0
Last reset from power-on
1 Ethernet/IEEE 802.3 interface(s)
18 ATM network interface(s)
123K bytes of non-volatile configuration memory.
8192K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2102
On the ATM switch router, it is possible to reprogram the functional
images on the route processors, ROMmon, switch processors, switch processor
feature cards, carrier modules, full-width modules, and network clock modules.
Functional images provide low-level functionality for various hardware
controllers. On hardware controllers within system programmable devices, such
as field programmable gate arrays (FPGAs) and Erasable Programmable Logic
Devices (EPLDs), it is possible for the hardware functional images to be
reprogrammed independent of system image loads and without the removal of the
devices from the controller.
The FPGA and functional images include caveat fixes, but in most cases,
it is not necessary to upgrade. The release notes that describe the caveats
from the FPGA and functional images are available
In general, Cisco advises you to use the latest image because of the
amount of software features and hardware support and high number of bug fixes.
Before you deploy a Cisco IOS software release in a production network, always
consult appropriate product-specific documentation and perform acceptance tests
in your own test environment, as well as consult the these resources on the
For other practices to consider when you make network changes like
upgrades, refer to
Management: Best Practices White Paper.